| Age | Commit message (Collapse) | Author | Files | Lines |
|---|
|
ldimm64 instructions are 16-byte long, and so have to be handled
appropriately in check_cfg(), just like the rest of BPF verifier does.
This has implications in three places:
- when determining next instruction for non-jump instructions;
- when determining next instruction for callback address ldimm64
instructions (in visit_func_call_insn());
- when checking for unreachable instructions, where second half of
ldimm64 is expected to be unreachable;
We take this also as an opportunity to report jump into the middle of
ldimm64. And adjust few test_verifier tests accordingly.
Acked-by: Eduard Zingerman <eddyz87@gmail.com>
Reported-by: Hao Sun <sunhao.th@gmail.com>
Fixes: 475fb78fbf48 ("bpf: verifier (add branch/goto checks)")
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/r/20231110002638.4168352-2-andrii@kernel.org
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
|
|
Crossbuilding selftests/bpf for architecture arm64, format specifies
type error show up like.
xskxceiver.c:912:34: error: format specifies type 'int' but the argument
has type '__u64' (aka 'unsigned long long') [-Werror,-Wformat]
ksft_print_msg("[%s] expected meta_count [%d], got meta_count [%d]\n",
~~
%llu
__func__, pkt->pkt_nb, meta->count);
^~~~~~~~~~~
xskxceiver.c:929:55: error: format specifies type 'unsigned long long' but
the argument has type 'u64' (aka 'unsigned long') [-Werror,-Wformat]
ksft_print_msg("Frag invalid addr: %llx len: %u\n", addr, len);
~~~~ ^~~~
Fixing the issues by casting to (unsigned long long) and changing the
specifiers to be %llu from %d and %u, since with u64s it might be %llx
or %lx, depending on architecture.
Signed-off-by: Anders Roxell <anders.roxell@linaro.org>
Link: https://lore.kernel.org/r/20231109174328.1774571-1-anders.roxell@linaro.org
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
|
|
git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Pull networking fixes from Jakub Kicinski:
"Including fixes from netfilter and bpf.
Current release - regressions:
- sched: fix SKB_NOT_DROPPED_YET splat under debug config
Current release - new code bugs:
- tcp:
- fix usec timestamps with TCP fastopen
- fix possible out-of-bounds reads in tcp_hash_fail()
- fix SYN option room calculation for TCP-AO
- tcp_sigpool: fix some off by one bugs
- bpf: fix compilation error without CGROUPS
- ptp:
- ptp_read() should not release queue
- fix tsevqs corruption
Previous releases - regressions:
- llc: verify mac len before reading mac header
Previous releases - always broken:
- bpf:
- fix check_stack_write_fixed_off() to correctly spill imm
- fix precision tracking for BPF_ALU | BPF_TO_BE | BPF_END
- check map->usercnt after timer->timer is assigned
- dsa: lan9303: consequently nested-lock physical MDIO
- dccp/tcp: call security_inet_conn_request() after setting IP addr
- tg3: fix the TX ring stall due to incorrect full ring handling
- phylink: initialize carrier state at creation
- ice: fix direction of VF rules in switchdev mode
Misc:
- fill in a bunch of missing MODULE_DESCRIPTION()s, more to come"
* tag 'net-6.7-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (84 commits)
net: ti: icss-iep: fix setting counter value
ptp: fix corrupted list in ptp_open
ptp: ptp_read should not release queue
net_sched: sch_fq: better validate TCA_FQ_WEIGHTS and TCA_FQ_PRIOMAP
net: kcm: fill in MODULE_DESCRIPTION()
net/sched: act_ct: Always fill offloading tuple iifidx
netfilter: nat: fix ipv6 nat redirect with mapped and scoped addresses
netfilter: xt_recent: fix (increase) ipv6 literal buffer length
ipvs: add missing module descriptions
netfilter: nf_tables: remove catchall element in GC sync path
netfilter: add missing module descriptions
drivers/net/ppp: use standard array-copy-function
net: enetc: shorten enetc_setup_xdp_prog() error message to fit NETLINK_MAX_FMTMSG_LEN
virtio/vsock: Fix uninit-value in virtio_transport_recv_pkt()
r8169: respect userspace disabling IFF_MULTICAST
selftests/bpf: get trusted cgrp from bpf_iter__cgroup directly
bpf: Let verifier consider {task,cgroup} is trusted in bpf_iter_reg
net: phylink: initialize carrier state at creation
test/vsock: add dobule bind connect test
test/vsock: refactor vsock_accept
...
|
|
https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf
Daniel Borkmann says:
====================
pull-request: bpf 2023-11-08
We've added 16 non-merge commits during the last 6 day(s) which contain
a total of 30 files changed, 341 insertions(+), 130 deletions(-).
The main changes are:
1) Fix a BPF verifier issue in precision tracking for BPF_ALU | BPF_TO_BE |
BPF_END where the source register was incorrectly marked as precise,
from Shung-Hsi Yu.
2) Fix a concurrency issue in bpf_timer where the former could still have
been alive after an application releases or unpins the map, from Hou Tao.
3) Fix a BPF verifier issue where immediates are incorrectly cast to u32
before being spilled and therefore losing sign information, from Hao Sun.
4) Fix a misplaced BPF_TRACE_ITER in check_css_task_iter_allowlist which
incorrectly compared bpf_prog_type with bpf_attach_type, from Chuyi Zhou.
5) Add __bpf_hook_{start,end} as well as __bpf_kfunc_{start,end}_defs macros,
migrate all BPF-related __diag callsites over to it, and add a new
__diag_ignore_all for -Wmissing-declarations to the macros to address
recent build warnings, from Dave Marchevsky.
6) Fix broken BPF selftest build of xdp_hw_metadata test on architectures
where char is not signed, from Björn Töpel.
7) Fix test_maps selftest to properly use LIBBPF_OPTS() macro to initialize
the bpf_map_create_opts, from Andrii Nakryiko.
8) Fix bpffs selftest to avoid unmounting /sys/kernel/debug as it may have
been mounted and used by other applications already, from Manu Bretelle.
9) Fix a build issue without CONFIG_CGROUPS wrt css_task open-coded
iterators, from Matthieu Baerts.
* tag 'for-netdev' of https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf:
selftests/bpf: get trusted cgrp from bpf_iter__cgroup directly
bpf: Let verifier consider {task,cgroup} is trusted in bpf_iter_reg
selftests/bpf: Fix broken build where char is unsigned
selftests/bpf: precision tracking test for BPF_NEG and BPF_END
bpf: Fix precision tracking for BPF_ALU | BPF_TO_BE | BPF_END
selftests/bpf: Add test for using css_task iter in sleepable progs
selftests/bpf: Add tests for css_task iter combining with cgroup iter
bpf: Relax allowlist for css_task iter
selftests/bpf: fix test_maps' use of bpf_map_create_opts
bpf: Check map->usercnt after timer->timer is assigned
bpf: Add __bpf_hook_{start,end} macros
bpf: Add __bpf_kfunc_{start,end}_defs macros
selftests/bpf: fix test_bpffs
selftests/bpf: Add test for immediate spilled to stack
bpf: Fix check_stack_write_fixed_off() to correctly spill imm
bpf: fix compilation error without CGROUPS
====================
Link: https://lore.kernel.org/r/20231108132448.1970-1-daniel@iogearbox.net
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
|
|
git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux
Pull RISC-V updates from Palmer Dabbelt:
- Support for cbo.zero in userspace
- Support for CBOs on ACPI-based systems
- A handful of improvements for the T-Head cache flushing ops
- Support for software shadow call stacks
- Various cleanups and fixes
* tag 'riscv-for-linus-6.7-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux: (31 commits)
RISC-V: hwprobe: Fix vDSO SIGSEGV
riscv: configs: defconfig: Enable configs required for RZ/Five SoC
riscv: errata: prefix T-Head mnemonics with th.
riscv: put interrupt entries into .irqentry.text
riscv: mm: Update the comment of CONFIG_PAGE_OFFSET
riscv: Using TOOLCHAIN_HAS_ZIHINTPAUSE marco replace zihintpause
riscv/mm: Fix the comment for swap pte format
RISC-V: clarify the QEMU workaround in ISA parser
riscv: correct pt_level name via pgtable_l5/4_enabled
RISC-V: Provide pgtable_l5_enabled on rv32
clocksource: timer-riscv: Increase rating of clock_event_device for Sstc
clocksource: timer-riscv: Don't enable/disable timer interrupt
lkdtm: Fix CFI_BACKWARD on RISC-V
riscv: Use separate IRQ shadow call stacks
riscv: Implement Shadow Call Stack
riscv: Move global pointer loading to a macro
riscv: Deduplicate IRQ stack switching
riscv: VMAP_STACK overflow detection thread-safe
RISC-V: cacheflush: Initialize CBO variables on ACPI systems
RISC-V: ACPI: RHCT: Add function to get CBO block sizes
...
|
|
git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull more power management updates from Rafael Wysocki:
"These add new hardware support to a cpufreq driver and fix cpupower
utility documentation:
- Add support for several Qualcomm SoC versions to the Qualcomm
cpufreq driver (Robert Marko, Varadarajan Narayanan)
- Fix a reference to a removed document in the cpupower utility
documentation (Vegard Nossum)"
* tag 'pm-6.7-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
cpufreq: qcom-nvmem: Introduce cpufreq for ipq95xx
cpufreq: qcom-nvmem: Enable cpufreq for ipq53xx
cpufreq: qcom-nvmem: add support for IPQ8074
cpupower: fix reference to nonexistent document
|
|
Commit f49843afde (selftests/bpf: Add tests for css_task iter combining
with cgroup iter) added a test which demonstrates how css_task iter can be
combined with cgroup iter. That test used bpf_cgroup_from_id() to convert
bpf_iter__cgroup->cgroup to a trusted ptr which is pointless now, since
with the previous fix, we can get a trusted cgroup directly from
bpf_iter__cgroup.
Signed-off-by: Chuyi Zhou <zhouchuyi@bytedance.com>
Acked-by: Yonghong Song <yonghong.song@linux.dev>
Link: https://lore.kernel.org/r/20231107132204.912120-3-zhouchuyi@bytedance.com
Signed-off-by: Martin KaFai Lau <martin.lau@kernel.org>
|
|
This add bind connect test which creates a listening server socket
and tries to connect a client with a bound local port to it twice.
Co-developed-by: Luigi Leonardi <luigi.leonardi@outlook.com>
Signed-off-by: Luigi Leonardi <luigi.leonardi@outlook.com>
Signed-off-by: Filippo Storniolo <f.storniolo95@gmail.com>
Reviewed-by: Stefano Garzarella <sgarzare@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
|
|
This is a preliminary patch to introduce SOCK_STREAM bind connect test.
vsock_accept() is split into vsock_listen() and vsock_accept().
Co-developed-by: Luigi Leonardi <luigi.leonardi@outlook.com>
Signed-off-by: Luigi Leonardi <luigi.leonardi@outlook.com>
Signed-off-by: Filippo Storniolo <f.storniolo95@gmail.com>
Reviewed-by: Stefano Garzarella <sgarzare@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
|
|
Add check on socket() return value in vsock_listen()
and vsock_connect()
Co-developed-by: Luigi Leonardi <luigi.leonardi@outlook.com>
Signed-off-by: Luigi Leonardi <luigi.leonardi@outlook.com>
Signed-off-by: Filippo Storniolo <f.storniolo95@gmail.com>
Reviewed-by: Stefano Garzarella <sgarzare@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
|
|
Merge cpupower utility update for 6.7-rc1:
- Fix a reference to a removed document in the cpupower utility
documentation (Vegard Nossum).
* pm-tools:
cpupower: fix reference to nonexistent document
|
|
Commit 8cea95b0bd79 ("tools: ynl-gen: handle do ops with no input attrs")
added support for some of the previously-skipped ops in nfsd.
Regenerate the user space parsers to fill them in.
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Acked-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
|
|
Pull CXL (Compute Express Link) updates from Dan Williams:
"The main new functionality this time is work to allow Linux to
natively handle CXL link protocol errors signalled via PCIe AER for
current generation CXL platforms. This required some enlightenment of
the PCIe AER core to workaround the fact that current generation RCH
(Restricted CXL Host) platforms physically hide topology details and
registers via a mechanism called RCRB (Root Complex Register Block).
The next major highlight is reworks to address bugs in parsing region
configurations for next generation VH (Virtual Host) topologies. The
old broken algorithm is replaced with a simpler one that significantly
increases the number of region configurations supported by Linux. This
is again relevant for error handling so that forward and reverse
address translation of memory errors can be carried out by Linux for
memory regions instantiated by platform firmware.
As for other cross-tree work, the ACPI table parsing code has been
refactored for reuse parsing the "CDAT" structure which is an
ACPI-like data structure that is reported by CXL devices. That work is
in preparation for v6.8 support for CXL QoS. Think of this as dynamic
generation of NUMA node topology information generated by Linux rather
than platform firmware.
Lastly, a number of internal object lifetime issues have been resolved
along with misc. fixes and feature updates (decoders_committed sysfs
ABI).
Summary:
- Add support for RCH (Restricted CXL Host) Error recovery
- Fix several region assembly bugs
- Fix mem-device lifetime issues relative to the sanitize command and
RCH topology.
- Refactor ACPI table parsing for CDAT parsing re-use in preparation
for CXL QOS support"
* tag 'cxl-for-6.7' of git://git.kernel.org/pub/scm/linux/kernel/git/cxl/cxl: (50 commits)
lib/fw_table: Remove acpi_parse_entries_array() export
cxl/pci: Change CXL AER support check to use native AER
cxl/hdm: Remove broken error path
cxl/hdm: Fix && vs || bug
acpi: Move common tables helper functions to common lib
cxl: Add support for reading CXL switch CDAT table
cxl: Add checksum verification to CDAT from CXL
cxl: Export QTG ids from CFMWS to sysfs as qos_class attribute
cxl: Add decoders_committed sysfs attribute to cxl_port
cxl: Add cxl_decoders_committed() helper
cxl/core/regs: Rework cxl_map_pmu_regs() to use map->dev for devm
cxl/core/regs: Rename phys_addr in cxl_map_component_regs()
PCI/AER: Unmask RCEC internal errors to enable RCH downstream port error handling
PCI/AER: Forward RCH downstream port-detected errors to the CXL.mem dev handler
cxl/pci: Disable root port interrupts in RCH mode
cxl/pci: Add RCH downstream port error logging
cxl/pci: Map RCH downstream AER registers for logging protocol errors
cxl/pci: Update CXL error logging to use RAS register address
PCI/AER: Refactor cper_print_aer() for use by CXL driver module
cxl/pci: Add RCH downstream port AER register discovery
...
|
|
git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc
Pull char/misc updates from Greg KH:
"Here is the big set of char/misc and other small driver subsystem
changes for 6.7-rc1. Included in here are:
- IIO subsystem driver updates and additions (largest part of this
pull request)
- FPGA subsystem driver updates
- Counter subsystem driver updates
- ICC subsystem driver updates
- extcon subsystem driver updates
- mei driver updates and additions
- nvmem subsystem driver updates and additions
- comedi subsystem dependency fixes
- parport driver fixups
- cdx subsystem driver and core updates
- splice support for /dev/zero and /dev/full
- other smaller driver cleanups
All of these have been in linux-next for a while with no reported
issues"
* tag 'char-misc-6.7-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (326 commits)
cdx: add sysfs for subsystem, class and revision
cdx: add sysfs for bus reset
cdx: add support for bus enable and disable
cdx: Register cdx bus as a device on cdx subsystem
cdx: Create symbol namespaces for cdx subsystem
cdx: Introduce lock to protect controller ops
cdx: Remove cdx controller list from cdx bus system
dts: ti: k3-am625-beagleplay: Add beaglecc1352
greybus: Add BeaglePlay Linux Driver
dt-bindings: net: Add ti,cc1352p7
dt-bindings: eeprom: at24: allow NVMEM cells based on old syntax
dt-bindings: nvmem: SID: allow NVMEM cells based on old syntax
Revert "nvmem: add new config option"
MAINTAINERS: coresight: Add missing Coresight files
misc: pci_endpoint_test: Add deviceID for J721S2 PCIe EP device support
firmware: xilinx: Move EXPORT_SYMBOL_GPL next to zynqmp_pm_feature definition
uacce: make uacce_class constant
ocxl: make ocxl_class constant
cxl: make cxl_class constant
misc: phantom: make phantom_class constant
...
|
|
git://git.kernel.org/pub/scm/linux/kernel/git/mic/linux
Pull landlock updates from Mickaël Salaün:
"A Landlock ruleset can now handle two new access rights:
LANDLOCK_ACCESS_NET_BIND_TCP and LANDLOCK_ACCESS_NET_CONNECT_TCP. When
handled, the related actions are denied unless explicitly allowed by a
Landlock network rule for a specific port.
The related patch series has been reviewed for almost two years, it
has evolved a lot and we now have reached a decent design, code and
testing. The refactored kernel code and the new test helpers also
bring the foundation to support more network protocols.
Test coverage for security/landlock is 92.4% of 710 lines according to
gcc/gcov-13, and it was 93.1% of 597 lines before this series. The
decrease in coverage is due to code refactoring to make the ruleset
management more generic (i.e. dealing with inodes and ports) that also
added new WARN_ON_ONCE() checks not possible to test from user space.
syzkaller has been updated accordingly [4], and such patched instance
(tailored to Landlock) has been running for a month, covering all the
new network-related code [5]"
Link: https://lore.kernel.org/r/20231026014751.414649-1-konstantin.meskhidze@huawei.com [1]
Link: https://lore.kernel.org/r/CAHC9VhS1wwgH6NNd+cJz4MYogPiRV8NyPDd1yj5SpaxeUB4UVg@mail.gmail.com [2]
Link: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next-history.git/commit/?id=c8dc5ee69d3a [3]
Link: https://github.com/google/syzkaller/pull/4266 [4]
Link: https://storage.googleapis.com/syzbot-assets/82e8608dec36/ci-upstream-linux-next-kasan-gce-root-ab577164.html#security%2flandlock%2fnet.c [5]
* tag 'landlock-6.7-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/mic/linux:
selftests/landlock: Add tests for FS topology changes with network rules
landlock: Document network support
samples/landlock: Support TCP restrictions
selftests/landlock: Add network tests
selftests/landlock: Share enforce_ruleset() helper
landlock: Support network rules with TCP bind and connect
landlock: Refactor landlock_add_rule() syscall
landlock: Refactor layer helpers
landlock: Move and rename layer helpers
landlock: Refactor merge/inherit_ruleset helpers
landlock: Refactor landlock_find_rule/insert_rule helpers
landlock: Allow FS topology changes for domains without such rule type
landlock: Make ruleset's access masks more generic
|
|
git://git.kernel.org/pub/scm/linux/kernel/git/perf/perf-tools
Pull perf tools updates from Namhyung Kim:
"Build:
- Compile BPF programs by default if clang (>= 12.0.1) is available
to enable more features like kernel lock contention, off-cpu
profiling, kwork, sample filtering and so on.
This can be disabled by passing BUILD_BPF_SKEL=0 to make.
- Produce better error messages for bison on debug build (make
DEBUG=1) by defining YYDEBUG symbol internally.
perf record:
- Track sideband events (like FORK/MMAP) from all CPUs even if perf
record targets a subset of CPUs only (using -C option). Otherwise
it may lose some information happened on a CPU out of the target
list.
- Fix checking raw sched_switch tracepoint argument using system BTF.
This affects off-cpu profiling which attaches a BPF program to the
raw tracepoint.
perf lock contention:
- Add --lock-cgroup option to see contention by cgroups. This should
be used with BPF only (using -b option).
$ sudo perf lock con -ab --lock-cgroup -- sleep 1
contended total wait max wait avg wait cgroup
835 14.06 ms 41.19 us 16.83 us /system.slice/led.service
25 122.38 us 13.77 us 4.89 us /
44 23.73 us 3.87 us 539 ns /user.slice/user-657345.slice/session-c4.scope
1 491 ns 491 ns 491 ns /system.slice/connectd.service
- Add -G/--cgroup-filter option to see contention only for given
cgroups.
This can be useful when you identified a cgroup in the above
command and want to investigate more on it. It also works with
other output options like -t/--threads and -l/--lock-addr.
$ sudo perf lock con -ab -G /user.slice/user-657345.slice/session-c4.scope -- sleep 1
contended total wait max wait avg wait type caller
8 77.11 us 17.98 us 9.64 us spinlock futex_wake+0xc8
2 24.56 us 14.66 us 12.28 us spinlock tick_do_update_jiffies64+0x25
1 4.97 us 4.97 us 4.97 us spinlock futex_q_lock+0x2a
- Use per-cpu array for better spinlock tracking. This is to improve
performance of the BPF program and to avoid nested contention on a
lock in the BPF hash map.
- Update callstack check for PowerPC. To find a representative caller
of a lock, it needs to look up the call stacks. It ends the lookup
when it sees 0 in the call stack buffer. However, PowerPC call
stacks can have 0 values in the beginning so skip them when it
expects valid call stacks after.
perf kwork:
- Support 'sched' class (for -k option) so that it can see task
scheduling event (using sched_switch tracepoint) as well as irq and
workqueue items.
- Add perf kwork top subcommand to show more accurate cpu utilization
with sched class above. It works both with a recorded data (using
perf kwork record command) and BPF (using -b option). Unlike perf
top command, it does not support interactive mode (yet).
$ sudo perf kwork top -b -k sched
Starting trace, Hit <Ctrl+C> to stop and report
^C
Total : 160702.425 ms, 8 cpus
%Cpu(s): 36.00% id, 0.00% hi, 0.00% si
%Cpu0 [|||||||||||||||||| 61.66%]
%Cpu1 [|||||||||||||||||| 61.27%]
%Cpu2 [||||||||||||||||||| 66.40%]
%Cpu3 [|||||||||||||||||| 61.28%]
%Cpu4 [|||||||||||||||||| 61.82%]
%Cpu5 [||||||||||||||||||||||| 77.41%]
%Cpu6 [|||||||||||||||||| 61.73%]
%Cpu7 [|||||||||||||||||| 63.25%]
PID SPID %CPU RUNTIME COMMMAND
-------------------------------------------------------------
0 0 38.72 8089.463 ms [swapper/1]
0 0 38.71 8084.547 ms [swapper/3]
0 0 38.33 8007.532 ms [swapper/0]
0 0 38.26 7992.985 ms [swapper/6]
0 0 38.17 7971.865 ms [swapper/4]
0 0 36.74 7447.765 ms [swapper/7]
0 0 33.59 6486.942 ms [swapper/2]
0 0 22.58 3771.268 ms [swapper/5]
9545 9351 2.48 447.136 ms sched-messaging
9574 9351 2.09 418.583 ms sched-messaging
9724 9351 2.05 372.407 ms sched-messaging
9531 9351 2.01 368.804 ms sched-messaging
9512 9351 2.00 362.250 ms sched-messaging
9514 9351 1.95 357.767 ms sched-messaging
9538 9351 1.86 384.476 ms sched-messaging
9712 9351 1.84 386.490 ms sched-messaging
9723 9351 1.83 380.021 ms sched-messaging
9722 9351 1.82 382.738 ms sched-messaging
9517 9351 1.81 354.794 ms sched-messaging
9559 9351 1.79 344.305 ms sched-messaging
9725 9351 1.77 365.315 ms sched-messaging
<SNIP>
- Add hard/soft-irq statistics to perf kwork top. This will show the
total CPU utilization with IRQ stats like below:
$ sudo perf kwork top -b -k sched,irq,softirq
Starting trace, Hit <Ctrl+C> to stop and report
^C
Total : 12554.889 ms, 8 cpus
%Cpu(s): 96.23% id, 0.10% hi, 0.19% si <---- here
%Cpu0 [| 4.60%]
%Cpu1 [| 4.59%]
%Cpu2 [ 2.73%]
%Cpu3 [| 3.81%]
<SNIP>
perf bench:
- Add -G/--cgroups option to perf bench sched pipe. The pipe bench is
good to measure context switch overhead. With this option, it puts
the reader and writer tasks in separate cgroups to enforce context
switch between two different cgroups.
Also it needs to set CPU affinity of the tasks in a CPU to
accurately measure the impact of cgroup context switches.
$ sudo perf stat -e context-switches,cgroup-switches -- \
> taskset -c 0 perf bench sched pipe -l 100000
# Running 'sched/pipe' benchmark:
# Executed 100000 pipe operations between two processes
Total time: 0.307 [sec]
3.078180 usecs/op
324867 ops/sec
Performance counter stats for 'taskset -c 0 perf bench sched pipe -l 100000':
200,026 context-switches
63 cgroup-switches
0.321637922 seconds time elapsed
You can see small number of cgroup-switches because both write and
read tasks are in the same cgroup.
$ sudo mkdir /sys/fs/cgroup/{AAA,BBB}
$ sudo perf stat -e context-switches,cgroup-switches -- \
> taskset -c 0 perf bench sched pipe -l 100000 -G AAA,BBB
# Running 'sched/pipe' benchmark:
# Executed 100000 pipe operations between two processes
Total time: 0.351 [sec]
3.512990 usecs/op
284657 ops/sec
Performance counter stats for 'taskset -c 0 perf bench sched pipe -l 100000 -G AAA,BBB':
200,020 context-switches
200,019 cgroup-switches
0.365034567 seconds time elapsed
Now context-switches and cgroup-switches are almost same. And you
can see the pipe operation took little more.
- Kill child processes when perf bench sched messaging exited
abnormally. Otherwise it'd leave the child doing unnecessary work.
perf test:
- Fix various shellcheck issues on the tests written in shell script.
- Skip tests when condition is not satisfied:
- object code reading test for non-text section addresses.
- CoreSight test if cs_etm// event is not available.
- lock contention test if not enough CPUs.
Event parsing:
- Make PMU alias name loading lazy to reduce the startup time in the
event parsing code for perf record, stat and others in the general
case.
- Lazily compute PMU default config. In the same sense, delay PMU
initialization until it's really needed to reduce the startup cost.
- Fix event term values that are raw events. The event specification
can have several terms including event name. But sometimes it
clashes with raw event encoding which starts with 'r' and has
hex-digits.
For example, an event named 'read' should be processed as a normal
event but it was mis-treated as a raw encoding and caused a
failure.
$ perf stat -e 'uncore_imc_free_running/event=read/' -a sleep 1
event syntax error: '..nning/event=read/'
\___ parser error
Run 'perf list' for a list of valid events
Usage: perf stat [<options>] [<command>]
-e, --event <event> event selector. use 'perf list' to list available events
Event metrics:
- Add "Compat" regex to match event with multiple identifiers.
- Usual updates for Intel, Power10, Arm telemetry/CMN and AmpereOne.
Misc:
- Assorted memory leak fixes and footprint reduction.
- Add "bpf_skeletons" to perf version --build-options so that users
can check whether their perf tools have BPF support easily.
- Fix unaligned access in Intel-PT packet decoder found by
undefined-behavior sanitizer.
- Avoid frequency mode for the dummy event. Surprisingly it'd impact
kernel timer tick handler performance by force iterating all PMU
events.
- Update bash shell completion for events and metrics"
* tag 'perf-tools-for-v6.7-1-2023-11-01' of git://git.kernel.org/pub/scm/linux/kernel/git/perf/perf-tools: (187 commits)
perf vendor events intel: Update tsx_cycles_per_elision metrics
perf vendor events intel: Update bonnell version number to v5
perf vendor events intel: Update westmereex events to v4
perf vendor events intel: Update meteorlake events to v1.06
perf vendor events intel: Update knightslanding events to v16
perf vendor events intel: Add typo fix for ivybridge FP
perf vendor events intel: Update a spelling in haswell/haswellx
perf vendor events intel: Update emeraldrapids to v1.01
perf vendor events intel: Update alderlake/alderlake events to v1.23
perf build: Disable BPF skeletons if clang version is < 12.0.1
perf callchain: Fix spelling mistake "statisitcs" -> "statistics"
perf report: Fix spelling mistake "heirachy" -> "hierarchy"
perf python: Fix binding linkage due to rename and move of evsel__increase_rlimit()
perf tests: test_arm_coresight: Simplify source iteration
perf vendor events intel: Add tigerlake two metrics
perf vendor events intel: Add broadwellde two metrics
perf vendor events intel: Fix broadwellde tma_info_system_dram_bw_use metric
perf mem_info: Add and use map_symbol__exit and addr_map_symbol__exit
perf callchain: Minor layout changes to callchain_list
perf callchain: Make brtype_stat in callchain_list optional
...
|
|
git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace
Pull tracing updates from Steven Rostedt:
- Remove eventfs_file descriptor
This is the biggest change, and the second part of making eventfs
create its files dynamically.
In 6.6 the first part was added, and that maintained a one to one
mapping between eventfs meta descriptors and the directories and file
inodes and dentries that were dynamically created. The directories
were represented by a eventfs_inode and the files were represented by
a eventfs_file.
In v6.7 the eventfs_file is removed. As all events have the same
directory make up (sched_switch has an "enable", "id", "format", etc
files), the handing of what files are underneath each leaf eventfs
directory is moved back to the tracing subsystem via a callback.
When an event is added to the eventfs, it registers an array of
evenfs_entry's. These hold the names of the files and the callbacks
to call when the file is referenced. The callback gets the name so
that the same callback may be used by multiple files. The callback
then supplies the filesystem_operations structure needed to create
this file.
This has brought the memory footprint of creating multiple eventfs
instances down by 2 megs each!
- User events now has persistent events that are not associated to a
single processes. These are privileged events that hang around even
if no process is attached to them
- Clean up of seq_buf
There's talk about using seq_buf more to replace strscpy() and
friends. But this also requires some minor modifications of seq_buf
to be able to do this
- Expand instance ring buffers individually
Currently if boot up creates an instance, and a trace event is
enabled on that instance, the ring buffer for that instance and the
top level ring buffer are expanded (1.4 MB per CPU). This wastes
memory as this happens when nothing is using the top level instance
- Other minor clean ups and fixes
* tag 'trace-v6.7' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace: (34 commits)
seq_buf: Export seq_buf_puts()
seq_buf: Export seq_buf_putc()
eventfs: Use simple_recursive_removal() to clean up dentries
eventfs: Remove special processing of dput() of events directory
eventfs: Delete eventfs_inode when the last dentry is freed
eventfs: Hold eventfs_mutex when calling callback functions
eventfs: Save ownership and mode
eventfs: Test for ei->is_freed when accessing ei->dentry
eventfs: Have a free_ei() that just frees the eventfs_inode
eventfs: Remove "is_freed" union with rcu head
eventfs: Fix kerneldoc of eventfs_remove_rec()
tracing: Have the user copy of synthetic event address use correct context
eventfs: Remove extra dget() in eventfs_create_events_dir()
tracing: Have trace_event_file have ref counters
seq_buf: Introduce DECLARE_SEQ_BUF and seq_buf_str()
eventfs: Fix typo in eventfs_inode union comment
eventfs: Fix WARN_ON() in create_file_dentry()
powerpc: Remove initialisation of readpos
tracing/histograms: Simplify last_cmd_set()
seq_buf: fix a misleading comment
...
|
|
git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace
Pull tracing tools updates from Steven Rostedt:
"RTLA:
- In rtla/utils.c, initialize the 'found' variable to avoid garbage
when a mount point is not found.
Verification:
- Remove duplicated imports on dot2k python script"
* tag 'trace-tools-v6.7' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace:
rtla: Fix uninitialized variable found
verification/dot2k: Delete duplicate imports
|
|
git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux
Merge cpupower utility update for 6.7-rc1 from Shuah Khan:
"This cpupower update for Linux 6.7-rc1 consists of a single fix to
documentation to fix reference to a removed document."
* tag 'linux-cpupower-6.7-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux:
cpupower: fix reference to nonexistent document
|
|
In the PMTU test, when all previous tests are skipped and the new test
passes, the exit code is set to 0. However, the current check mistakenly
treats this as an assignment, causing the check to pass every time.
Consequently, regardless of how many tests have failed, if the latest test
passes, the PMTU test will report a pass.
Fixes: 2a9d3716b810 ("selftests: pmtu.sh: improve the test result processing")
Signed-off-by: Hangbin Liu <liuhangbin@gmail.com>
Acked-by: Po-Hsu Lin <po-hsu.lin@canonical.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
|
|
git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
Pull non-MM updates from Andrew Morton:
"As usual, lots of singleton and doubleton patches all over the tree
and there's little I can say which isn't in the individual changelogs.
The lengthier patch series are
- 'kdump: use generic functions to simplify crashkernel reservation
in arch', from Baoquan He. This is mainly cleanups and
consolidation of the 'crashkernel=' kernel parameter handling
- After much discussion, David Laight's 'minmax: Relax type checks in
min() and max()' is here. Hopefully reduces some typecasting and
the use of min_t() and max_t()
- A group of patches from Oleg Nesterov which clean up and slightly
fix our handling of reads from /proc/PID/task/... and which remove
task_struct.thread_group"
* tag 'mm-nonmm-stable-2023-11-02-14-08' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (64 commits)
scripts/gdb/vmalloc: disable on no-MMU
scripts/gdb: fix usage of MOD_TEXT not defined when CONFIG_MODULES=n
.mailmap: add address mapping for Tomeu Vizoso
mailmap: update email address for Claudiu Beznea
tools/testing/selftests/mm/run_vmtests.sh: lower the ptrace permissions
.mailmap: map Benjamin Poirier's address
scripts/gdb: add lx_current support for riscv
ocfs2: fix a spelling typo in comment
proc: test ProtectionKey in proc-empty-vm test
proc: fix proc-empty-vm test with vsyscall
fs/proc/base.c: remove unneeded semicolon
do_io_accounting: use sig->stats_lock
do_io_accounting: use __for_each_thread()
ocfs2: replace BUG_ON() at ocfs2_num_free_extents() with ocfs2_error()
ocfs2: fix a typo in a comment
scripts/show_delta: add __main__ judgement before main code
treewide: mark stuff as __ro_after_init
fs: ocfs2: check status values
proc: test /proc/${pid}/statm
compiler.h: move __is_constexpr() to compiler.h
...
|
|
git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
Pull MM updates from Andrew Morton:
"Many singleton patches against the MM code. The patch series which are
included in this merge do the following:
- Kemeng Shi has contributed some compation maintenance work in the
series 'Fixes and cleanups to compaction'
- Joel Fernandes has a patchset ('Optimize mremap during mutual
alignment within PMD') which fixes an obscure issue with mremap()'s
pagetable handling during a subsequent exec(), based upon an
implementation which Linus suggested
- More DAMON/DAMOS maintenance and feature work from SeongJae Park i
the following patch series:
mm/damon: misc fixups for documents, comments and its tracepoint
mm/damon: add a tracepoint for damos apply target regions
mm/damon: provide pseudo-moving sum based access rate
mm/damon: implement DAMOS apply intervals
mm/damon/core-test: Fix memory leaks in core-test
mm/damon/sysfs-schemes: Do DAMOS tried regions update for only one apply interval
- In the series 'Do not try to access unaccepted memory' Adrian
Hunter provides some fixups for the recently-added 'unaccepted
memory' feature. To increase the feature's checking coverage. 'Plug
a few gaps where RAM is exposed without checking if it is
unaccepted memory'
- In the series 'cleanups for lockless slab shrink' Qi Zheng has done
some maintenance work which is preparation for the lockless slab
shrinking code
- Qi Zheng has redone the earlier (and reverted) attempt to make slab
shrinking lockless in the series 'use refcount+RCU method to
implement lockless slab shrink'
- David Hildenbrand contributes some maintenance work for the rmap
code in the series 'Anon rmap cleanups'
- Kefeng Wang does more folio conversions and some maintenance work
in the migration code. Series 'mm: migrate: more folio conversion
and unification'
- Matthew Wilcox has fixed an issue in the buffer_head code which was
causing long stalls under some heavy memory/IO loads. Some cleanups
were added on the way. Series 'Add and use bdev_getblk()'
- In the series 'Use nth_page() in place of direct struct page
manipulation' Zi Yan has fixed a potential issue with the direct
manipulation of hugetlb page frames
- In the series 'mm: hugetlb: Skip initialization of gigantic tail
struct pages if freed by HVO' has improved our handling of gigantic
pages in the hugetlb vmmemmep optimizaton code. This provides
significant boot time improvements when significant amounts of
gigantic pages are in use
- Matthew Wilcox has sent the series 'Small hugetlb cleanups' - code
rationalization and folio conversions in the hugetlb code
- Yin Fengwei has improved mlock()'s handling of large folios in the
series 'support large folio for mlock'
- In the series 'Expose swapcache stat for memcg v1' Liu Shixin has
added statistics for memcg v1 users which are available (and
useful) under memcg v2
- Florent Revest has enhanced the MDWE (Memory-Deny-Write-Executable)
prctl so that userspace may direct the kernel to not automatically
propagate the denial to child processes. The series is named 'MDWE
without inheritance'
- Kefeng Wang has provided the series 'mm: convert numa balancing
functions to use a folio' which does what it says
- In the series 'mm/ksm: add fork-exec support for prctl' Stefan
Roesch makes is possible for a process to propagate KSM treatment
across exec()
- Huang Ying has enhanced memory tiering's calculation of memory
distances. This is used to permit the dax/kmem driver to use 'high
bandwidth memory' in addition to Optane Data Center Persistent
Memory Modules (DCPMM). The series is named 'memory tiering:
calculate abstract distance based on ACPI HMAT'
- In the series 'Smart scanning mode for KSM' Stefan Roesch has
optimized KSM by teaching it to retain and use some historical
information from previous scans
- Yosry Ahmed has fixed some inconsistencies in memcg statistics in
the series 'mm: memcg: fix tracking of pending stats updates
values'
- In the series 'Implement IOCTL to get and optionally clear info
about PTEs' Peter Xu has added an ioctl to /proc/<pid>/pagemap
which permits us to atomically read-then-clear page softdirty
state. This is mainly used by CRIU
- Hugh Dickins contributed the series 'shmem,tmpfs: general
maintenance', a bunch of relatively minor maintenance tweaks to
this code
- Matthew Wilcox has increased the use of the VMA lock over
file-backed page faults in the series 'Handle more faults under the
VMA lock'. Some rationalizations of the fault path became possible
as a result
- In the series 'mm/rmap: convert page_move_anon_rmap() to
folio_move_anon_rmap()' David Hildenbrand has implemented some
cleanups and folio conversions
- In the series 'various improvements to the GUP interface' Lorenzo
Stoakes has simplified and improved the GUP interface with an eye
to providing groundwork for future improvements
- Andrey Konovalov has sent along the series 'kasan: assorted fixes
and improvements' which does those things
- Some page allocator maintenance work from Kemeng Shi in the series
'Two minor cleanups to break_down_buddy_pages'
- In thes series 'New selftest for mm' Breno Leitao has developed
another MM self test which tickles a race we had between madvise()
and page faults
- In the series 'Add folio_end_read' Matthew Wilcox provides cleanups
and an optimization to the core pagecache code
- Nhat Pham has added memcg accounting for hugetlb memory in the
series 'hugetlb memcg accounting'
- Cleanups and rationalizations to the pagemap code from Lorenzo
Stoakes, in the series 'Abstract vma_merge() and split_vma()'
- Audra Mitchell has fixed issues in the procfs page_owner code's new
timestamping feature which was causing some misbehaviours. In the
series 'Fix page_owner's use of free timestamps'
- Lorenzo Stoakes has fixed the handling of new mappings of sealed
files in the series 'permit write-sealed memfd read-only shared
mappings'
- Mike Kravetz has optimized the hugetlb vmemmap optimization in the
series 'Batch hugetlb vmemmap modification operations'
- Some buffer_head folio conversions and cleanups from Matthew Wilcox
in the series 'Finish the create_empty_buffers() transition'
- As a page allocator performance optimization Huang Ying has added
automatic tuning to the allocator's per-cpu-pages feature, in the
series 'mm: PCP high auto-tuning'
- Roman Gushchin has contributed the patchset 'mm: improve
performance of accounted kernel memory allocations' which improves
their performance by ~30% as measured by a micro-benchmark
- folio conversions from Kefeng Wang in the series 'mm: convert page
cpupid functions to folios'
- Some kmemleak fixups in Liu Shixin's series 'Some bugfix about
kmemleak'
- Qi Zheng has improved our handling of memoryless nodes by keeping
them off the allocation fallback list. This is done in the series
'handle memoryless nodes more appropriately'
- khugepaged conversions from Vishal Moola in the series 'Some
khugepaged folio conversions'"
[ bcachefs conflicts with the dynamically allocated shrinkers have been
resolved as per Stephen Rothwell in
https://lore.kernel.org/all/20230913093553.4290421e@canb.auug.org.au/
with help from Qi Zheng.
The clone3 test filtering conflict was half-arsed by yours truly ]
* tag 'mm-stable-2023-11-01-14-33' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (406 commits)
mm/damon/sysfs: update monitoring target regions for online input commit
mm/damon/sysfs: remove requested targets when online-commit inputs
selftests: add a sanity check for zswap
Documentation: maple_tree: fix word spelling error
mm/vmalloc: fix the unchecked dereference warning in vread_iter()
zswap: export compression failure stats
Documentation: ubsan: drop "the" from article title
mempolicy: migration attempt to match interleave nodes
mempolicy: mmap_lock is not needed while migrating folios
mempolicy: alloc_pages_mpol() for NUMA policy without vma
mm: add page_rmappable_folio() wrapper
mempolicy: remove confusing MPOL_MF_LAZY dead code
mempolicy: mpol_shared_policy_init() without pseudo-vma
mempolicy trivia: use pgoff_t in shared mempolicy tree
mempolicy trivia: slightly more consistent naming
mempolicy trivia: delete those ancient pr_debug()s
mempolicy: fix migrate_pages(2) syscall return nr_failed
kernfs: drop shared NUMA mempolicy hooks
hugetlbfs: drop shared NUMA mempolicy pretence
mm/damon/sysfs-test: add a unit test for damon_sysfs_set_targets()
...
|
|
git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6
Pull crypto updates from Herbert Xu:
"API:
- Add virtual-address based lskcipher interface
- Optimise ahash/shash performance in light of costly indirect calls
- Remove ahash alignmask attribute
Algorithms:
- Improve AES/XTS performance of 6-way unrolling for ppc
- Remove some uses of obsolete algorithms (md4, md5, sha1)
- Add FIPS 202 SHA-3 support in pkcs1pad
- Add fast path for single-page messages in adiantum
- Remove zlib-deflate
Drivers:
- Add support for S4 in meson RNG driver
- Add STM32MP13x support in stm32
- Add hwrng interface support in qcom-rng
- Add support for deflate algorithm in hisilicon/zip"
* tag 'v6.7-p1' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6: (283 commits)
crypto: adiantum - flush destination page before unmapping
crypto: testmgr - move pkcs1pad(rsa,sha3-*) to correct place
Documentation/module-signing.txt: bring up to date
module: enable automatic module signing with FIPS 202 SHA-3
crypto: asymmetric_keys - allow FIPS 202 SHA-3 signatures
crypto: rsa-pkcs1pad - Add FIPS 202 SHA-3 support
crypto: FIPS 202 SHA-3 register in hash info for IMA
x509: Add OIDs for FIPS 202 SHA-3 hash and signatures
crypto: ahash - optimize performance when wrapping shash
crypto: ahash - check for shash type instead of not ahash type
crypto: hash - move "ahash wrapping shash" functions to ahash.c
crypto: talitos - stop using crypto_ahash::init
crypto: chelsio - stop using crypto_ahash::init
crypto: ahash - improve file comment
crypto: ahash - remove struct ahash_request_priv
crypto: ahash - remove crypto_ahash_alignmask
crypto: gcm - stop using alignmask of ahash
crypto: chacha20poly1305 - stop using alignmask of ahash
crypto: ccm - stop using alignmask of ahash
net: ipv6: stop checking crypto_ahash_alignmask
...
|
|
Pull kvm updates from Paolo Bonzini:
"ARM:
- Generalized infrastructure for 'writable' ID registers, effectively
allowing userspace to opt-out of certain vCPU features for its
guest
- Optimization for vSGI injection, opportunistically compressing
MPIDR to vCPU mapping into a table
- Improvements to KVM's PMU emulation, allowing userspace to select
the number of PMCs available to a VM
- Guest support for memory operation instructions (FEAT_MOPS)
- Cleanups to handling feature flags in KVM_ARM_VCPU_INIT, squashing
bugs and getting rid of useless code
- Changes to the way the SMCCC filter is constructed, avoiding wasted
memory allocations when not in use
- Load the stage-2 MMU context at vcpu_load() for VHE systems,
reducing the overhead of errata mitigations
- Miscellaneous kernel and selftest fixes
LoongArch:
- New architecture for kvm.
The hardware uses the same model as x86, s390 and RISC-V, where
guest/host mode is orthogonal to supervisor/user mode. The
virtualization extensions are very similar to MIPS, therefore the
code also has some similarities but it's been cleaned up to avoid
some of the historical bogosities that are found in arch/mips. The
kernel emulates MMU, timer and CSR accesses, while interrupt
controllers are only emulated in userspace, at least for now.
RISC-V:
- Support for the Smstateen and Zicond extensions
- Support for virtualizing senvcfg
- Support for virtualized SBI debug console (DBCN)
S390:
- Nested page table management can be monitored through tracepoints
and statistics
x86:
- Fix incorrect handling of VMX posted interrupt descriptor in
KVM_SET_LAPIC, which could result in a dropped timer IRQ
- Avoid WARN on systems with Intel IPI virtualization
- Add CONFIG_KVM_MAX_NR_VCPUS, to allow supporting up to 4096 vCPUs
without forcing more common use cases to eat the extra memory
overhead.
- Add virtualization support for AMD SRSO mitigation (IBPB_BRTYPE and
SBPB, aka Selective Branch Predictor Barrier).
- Fix a bug where restoring a vCPU snapshot that was taken within 1
second of creating the original vCPU would cause KVM to try to
synchronize the vCPU's TSC and thus clobber the correct TSC being
set by userspace.
- Compute guest wall clock using a single TSC read to avoid
generating an inaccurate time, e.g. if the vCPU is preempted
between multiple TSC reads.
- "Virtualize" HWCR.TscFreqSel to make Linux guests happy, which
complain about a "Firmware Bug" if the bit isn't set for select
F/M/S combos. Likewise "virtualize" (ignore) MSR_AMD64_TW_CFG to
appease Windows Server 2022.
- Don't apply side effects to Hyper-V's synthetic timer on writes
from userspace to fix an issue where the auto-enable behavior can
trigger spurious interrupts, i.e. do auto-enabling only for guest
writes.
- Remove an unnecessary kick of all vCPUs when synchronizing the
dirty log without PML enabled.
- Advertise "support" for non-serializing FS/GS base MSR writes as
appropriate.
- Harden the fast page fault path to guard against encountering an
invalid root when walking SPTEs.
- Omit "struct kvm_vcpu_xen" entirely when CONFIG_KVM_XEN=n.
- Use the fast path directly from the timer callback when delivering
Xen timer events, instead of waiting for the next iteration of the
run loop. This was not done so far because previously proposed code
had races, but now care is taken to stop the hrtimer at critical
points such as restarting the timer or saving the timer information
for userspace.
- Follow the lead of upstream Xen and ignore the VCPU_SSHOTTMR_future
flag.
- Optimize injection of PMU interrupts that are simultaneous with
NMIs.
- Usual handful of fixes for typos and other warts.
x86 - MTRR/PAT fixes and optimizations:
- Clean up code that deals with honoring guest MTRRs when the VM has
non-coherent DMA and host MTRRs are ignored, i.e. EPT is enabled.
- Zap EPT entries when non-coherent DMA assignment stops/start to
prevent using stale entries with the wrong memtype.
- Don't ignore guest PAT for CR0.CD=1 && KVM_X86_QUIRK_CD_NW_CLEARED=y
This was done as a workaround for virtual machine BIOSes that did
not bother to clear CR0.CD (because ancient KVM/QEMU did not bother
to set it, in turn), and there's zero reason to extend the quirk to
also ignore guest PAT.
x86 - SEV fixes:
- Report KVM_EXIT_SHUTDOWN instead of EINVAL if KVM intercepts
SHUTDOWN while running an SEV-ES guest.
- Clean up the recognition of emulation failures on SEV guests, when
KVM would like to "skip" the instruction but it had already been
partially emulated. This makes it possible to drop a hack that
second guessed the (insufficient) information provided by the
emulator, and just do the right thing.
Documentation:
- Various updates and fixes, mostly for x86
- MTRR and PAT fixes and optimizations"
* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (164 commits)
KVM: selftests: Avoid using forced target for generating arm64 headers
tools headers arm64: Fix references to top srcdir in Makefile
KVM: arm64: Add tracepoint for MMIO accesses where ISV==0
KVM: arm64: selftest: Perform ISB before reading PAR_EL1
KVM: arm64: selftest: Add the missing .guest_prepare()
KVM: arm64: Always invalidate TLB for stage-2 permission faults
KVM: x86: Service NMI requests after PMI requests in VM-Enter path
KVM: arm64: Handle AArch32 SPSR_{irq,abt,und,fiq} as RAZ/WI
KVM: arm64: Do not let a L1 hypervisor access the *32_EL2 sysregs
KVM: arm64: Refine _EL2 system register list that require trap reinjection
arm64: Add missing _EL2 encodings
arm64: Add missing _EL12 encodings
KVM: selftests: aarch64: vPMU test for validating user accesses
KVM: selftests: aarch64: vPMU register test for unimplemented counters
KVM: selftests: aarch64: vPMU register test for implemented counters
KVM: selftests: aarch64: Introduce vpmu_counter_access test
tools: Import arm_pmuv3.h
KVM: arm64: PMU: Allow userspace to limit PMCR_EL0.N for the guest
KVM: arm64: Sanitize PM{C,I}NTEN{SET,CLR}, PMOVS{SET,CLR} before first run
KVM: arm64: Add {get,set}_user for PM{C,I}NTEN{SET,CLR}, PMOVS{SET,CLR}
...
|
|
git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm
Pull libnvdimm updates from Ira Weiny:
- updates to deprecated and changed interfaces
- bug/kdoc fixes
* tag 'libnvdimm-for-6.7' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm:
libnvdimm: remove kernel-doc warnings:
testing: nvdimm: make struct class structures constant
libnvdimm: Annotate struct nd_region with __counted_by
nd_btt: Make BTT lanes preemptible
libnvdimm/of_pmem: Use devm_kstrdup instead of kstrdup and check its return value
dax: refactor deprecated strncpy
|
|
git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound
Pull sound updates from Takashi Iwai:
"Most of changes at this time are for ASoC, spread over ASoC core and
drivers due to the API prefix standardization.
Other than that, there have little change wrt API, rather lots of
driver-specific updates and fixes.
Some highlight below:
ASoC:
- Standardization of API prefix
- GPIO API usage improvements
- Support for HDA patches
- Lots of work on SOF, including crash dump support
- Fixes for noise when stopping some Sounwire CODECs
- Support for AMD platforms with es83xx, AMD ACP 6.3 and 7.0, Awinc
AT87390 and AW88399, many Intel platforms, many Mediatek platforms,
Qualcomm SM6115 and SC7180 platforms, Richtek RTQ9128 and Texas
Instruments TAS575x
HD-audio and USB-audio:
- Deferred probe support of audio component binding
- More fixes and enhancements for Cirrus subcodecs
- USB Scarlett2 mixer and McIntosh DSD quirk
Others:
- More enhancement of snd-aloop driver
- Update MAINTAINERS entry for linux-sound mailing list"
* tag 'sound-6.7-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound: (485 commits)
ALSA: hda: cs35l41: Fix missing error code in cs35l41_smart_amp()
ALSA: hda: cs35l41: mark cs35l41_verify_id() static
ASoC: codecs: wsa883x: make use of new mute_unmute_on_trigger flag
ASoC: soc-dai: add flag to mute and unmute stream during trigger
ASoC: ams-delta.c: use component after check
ASoC: amd: acp: select SND_SOC_AMD_ACP_LEGACY_COMMON for ACP63
ASoC: codecs: aw88399: fix typo in Kconfig select
ASoC: amd: acp: add ACPI dependency
ASoC: Intel: avs: Add rt5514 machine board
ASoC: Intel: avs: Add rt5514 machine board
ALSA: scarlett2: Add missing check with firmware version control
ALSA: virtio: use ack callback
ALSA: scarlett2: Remap Level Meter values
ALSA: scarlett2: Allow passing any output to line_out_remap()
ALSA: scarlett2: Add support for reading firmware version
ALSA: scarlett2: Rename Gen 3 config sets
ALSA: scarlett2: Rename scarlett_gen2 to scarlett2
ASoC: cs35l41: Detect CSPL errors when sending CSPL commands
ALSA: hda: cs35l41: Check CSPL state after loading firmware
ALSA: hda: cs35l41: Do not unload firmware before reset in system suspend
...
|
|
git://git.kernel.org/pub/scm/linux/kernel/git/hid/hid
Pull HID updates from Jiri Kosina:
- fixes for crashes detected by CONFIG_KUNIT_ALL_TESTS in hid-uclogic
driver (Jinjie Ruan)
- HID selftests fixes and improvements (Benjamin Tissoires)
- probe error handling path fixes in hid-nvidia-shield driver
(Christophe JAILLET)
- cleanup of LED handling in hid-nintendo (Martino Fontana)
- big cleanup of logitech-hidpp probe code (Hans de Goede)
- Suspend/Resume fix for USB Thinkpad Compact Keyboard (Jamie Lentin)
- firmware detection improvement for Lenovo cptkbd (Mikhail
Khvainitski)
- IRQ shutdown and workqueue initialization fixes for hid-cp2112 driver
(Danny Kaehn)
- #ifdef CONFIG_PM removal from HID code (Thomas Weißschuh)
- other assorted device-ID additions and quirks
* tag 'for-linus-2023110101' of git://git.kernel.org/pub/scm/linux/kernel/git/hid/hid: (31 commits)
HID: Add quirk for Dell Pro Wireless Keyboard and Mouse KM5221W
HID: logitech-hidpp: Stop IO before calling hid_connect()
HID: logitech-hidpp: Drop HIDPP_QUIRK_UNIFYING
HID: logitech-hidpp: Drop delayed_work_cb()
HID: logitech-hidpp: Fix connect event race
HID: logitech-hidpp: Remove unused connected param from *_connect()
HID: logitech-hidpp: Remove connected check for non-unifying devices
HID: logitech-hidpp: Add hidpp_non_unifying_init() helper
HID: logitech-hidpp: Move hidpp_overwrite_name() to before connect check
HID: logitech-hidpp: Move g920_get_config() to just before hidpp_ff_init()
HID: logitech-hidpp: Remove wtp_get_config() call from probe()
HID: logitech-hidpp: Move get_wireless_feature_index() check to hidpp_connect_event()
HID: logitech-hidpp: Revert "Don't restart communication if not necessary"
HID: logitech-hidpp: Don't restart IO, instead defer hid_connect() only
HID: rmi: remove #ifdef CONFIG_PM
HID: multitouch: remove #ifdef CONFIG_PM
HID: usbhid: remove #ifdef CONFIG_PM
HID: core: remove #ifdef CONFIG_PM from hid_driver
hid: lenovo: Resend all settings on reset_resume for compact keyboards
HID: uclogic: Fix a work->entry not empty bug in __queue_work()
...
|
|
There are architectures where char is not signed. If so, the following
error is triggered:
| xdp_hw_metadata.c:435:42: error: result of comparison of constant -1 \
| with expression of type 'char' is always true \
| [-Werror,-Wtautological-constant-out-of-range-compare]
| 435 | while ((opt = getopt(argc, argv, "mh")) != -1) {
| | ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ^ ~~
| 1 error generated.
Correct by changing the char to int.
Fixes: bb6a88885fde ("selftests/bpf: Add options and frags to xdp_hw_metadata")
Signed-off-by: Björn Töpel <bjorn@rivosinc.com>
Acked-by: Larysa Zaremba <larysa.zaremba@intel.com>
Tested-by: Anders Roxell <anders.roxell@linaro.org>
Link: https://lore.kernel.org/r/20231102103537.247336-1-bjorn@kernel.org
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
|
|
As seen from previous commit that fix backtracking for BPF_ALU | BPF_TO_BE
| BPF_END, both BPF_NEG and BPF_END require special handling. Add tests
written with inline assembly to check that the verifier does not incorrecly
use the src_reg field of BPF_NEG and BPF_END (including bswap added in v4).
Suggested-by: Eduard Zingerman <eddyz87@gmail.com>
Signed-off-by: Shung-Hsi Yu <shung-hsi.yu@suse.com>
Link: https://lore.kernel.org/r/20231102053913.12004-4-shung-hsi.yu@suse.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
|
|
This Patch add a test to prove css_task iter can be used in normal
sleepable progs.
Signed-off-by: Chuyi Zhou <zhouchuyi@bytedance.com>
Acked-by: Yonghong Song <yonghong.song@linux.dev>
Link: https://lore.kernel.org/r/20231031050438.93297-4-zhouchuyi@bytedance.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
|
|
This patch adds a test which demonstrates how css_task iter can be combined
with cgroup iter and it won't cause deadlock, though cgroup iter is not
sleepable.
Signed-off-by: Chuyi Zhou <zhouchuyi@bytedance.com>
Acked-by: Yonghong Song <yonghong.song@linux.dev>
Link: https://lore.kernel.org/r/20231031050438.93297-3-zhouchuyi@bytedance.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
|
|
The newly added open-coded css_task iter would try to hold the global
css_set_lock in bpf_iter_css_task_new, so the bpf side has to be careful in
where it allows to use this iter. The mainly concern is dead locking on
css_set_lock. check_css_task_iter_allowlist() in verifier enforced css_task
can only be used in bpf_lsm hooks and sleepable bpf_iter.
This patch relax the allowlist for css_task iter. Any lsm and any iter
(even non-sleepable) and any sleepable are safe since they would not hold
the css_set_lock before entering BPF progs context.
This patch also fixes the misused BPF_TRACE_ITER in
check_css_task_iter_allowlist which compared bpf_prog_type with
bpf_attach_type.
Fixes: 9c66dc94b62ae ("bpf: Introduce css_task open-coded iterator kfuncs")
Signed-off-by: Chuyi Zhou <zhouchuyi@bytedance.com>
Acked-by: Yonghong Song <yonghong.song@linux.dev>
Link: https://lore.kernel.org/r/20231031050438.93297-2-zhouchuyi@bytedance.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
|
|
Use LIBBPF_OPTS() macro to properly initialize bpf_map_create_opts in
test_maps' tests.
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Acked-by: Yonghong Song <yonghong.song@linux.dev>
Link: https://lore.kernel.org/r/20231029011509.2479232-1-andrii@kernel.org
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
|
|
Not all uses of __diag_ignore_all(...) in BPF-related code in order to
suppress warnings are wrapping kfunc definitions. Some "hook point"
definitions - small functions meant to be used as attach points for
fentry and similar BPF progs - need to suppress -Wmissing-declarations.
We could use __bpf_kfunc_{start,end}_defs added in the previous patch in
such cases, but this might be confusing to someone unfamiliar with BPF
internals. Instead, this patch adds __bpf_hook_{start,end} macros,
currently having the same effect as __bpf_kfunc_{start,end}_defs, then
uses them to suppress warnings for two hook points in the kernel itself
and some bpf_testmod hook points as well.
Signed-off-by: Dave Marchevsky <davemarchevsky@fb.com>
Cc: Yafang Shao <laoar.shao@gmail.com>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Acked-by: Yafang Shao <laoar.shao@gmail.com>
Link: https://lore.kernel.org/r/20231031215625.2343848-2-davemarchevsky@fb.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
|
|
Currently this tests tries to umount /sys/kernel/debug (TDIR) but the
system it is running on may have mounts below.
For example, danobi/vmtest [0] VMs have
mount -t tracefs tracefs /sys/kernel/debug/tracing
as part of their init.
This change instead creates a "random" directory under /tmp and uses this
as TDIR.
If the directory already exists, ignore the error and keep moving on.
Test:
Originally:
$ vmtest -k $KERNEL_REPO/arch/x86_64/boot/bzImage "./test_progs -vv -a test_bpffs"
=> bzImage
===> Booting
===> Setting up VM
===> Running command
[ 2.138818] bpf_testmod: loading out-of-tree module taints kernel.
[ 2.140913] bpf_testmod: module verification failed: signature and/or required key missing - tainting kernel
bpf_testmod.ko is already unloaded.
Loading bpf_testmod.ko...
Successfully loaded bpf_testmod.ko.
test_test_bpffs:PASS:clone 0 nsec
fn:PASS:unshare 0 nsec
fn:PASS:mount / 0 nsec
fn:FAIL:umount /sys/kernel/debug unexpected error: -1 (errno 16)
bpf_testmod.ko is already unloaded.
Loading bpf_testmod.ko...
Successfully loaded bpf_testmod.ko.
test_test_bpffs:PASS:clone 0 nsec
test_test_bpffs:PASS:waitpid 0 nsec
test_test_bpffs:FAIL:bpffs test failed 255#282 test_bpffs:FAIL
Summary: 0/0 PASSED, 0 SKIPPED, 1 FAILED
Successfully unloaded bpf_testmod.ko.
Command failed with exit code: 1
After this change:
$ vmtest -k $(make image_name) 'cd tools/testing/selftests/bpf && ./test_progs -vv -a test_bpffs'
=> bzImage
===> Booting
===> Setting up VM
===> Running command
[ 2.295696] bpf_testmod: loading out-of-tree module taints kernel.
[ 2.296468] bpf_testmod: module verification failed: signature and/or required key missing - tainting kernel
bpf_testmod.ko is already unloaded.
Loading bpf_testmod.ko...
Successfully loaded bpf_testmod.ko.
test_test_bpffs:PASS:clone 0 nsec
fn:PASS:unshare 0 nsec
fn:PASS:mount / 0 nsec
fn:PASS:mount tmpfs 0 nsec
fn:PASS:mkdir /tmp/test_bpffs_testdir/fs1 0 nsec
fn:PASS:mkdir /tmp/test_bpffs_testdir/fs2 0 nsec
fn:PASS:mount bpffs /tmp/test_bpffs_testdir/fs1 0 nsec
fn:PASS:mount bpffs /tmp/test_bpffs_testdir/fs2 0 nsec
fn:PASS:reading /tmp/test_bpffs_testdir/fs1/maps.debug 0 nsec
fn:PASS:reading /tmp/test_bpffs_testdir/fs2/progs.debug 0 nsec
fn:PASS:creating /tmp/test_bpffs_testdir/fs1/a 0 nsec
fn:PASS:creating /tmp/test_bpffs_testdir/fs1/a/1 0 nsec
fn:PASS:creating /tmp/test_bpffs_testdir/fs1/b 0 nsec
fn:PASS:create_map(ARRAY) 0 nsec
fn:PASS:pin map 0 nsec
fn:PASS:stat(/tmp/test_bpffs_testdir/fs1/a) 0 nsec
fn:PASS:renameat2(/fs1/a, /fs1/b, RENAME_EXCHANGE) 0 nsec
fn:PASS:stat(/tmp/test_bpffs_testdir/fs1/b) 0 nsec
fn:PASS:b should have a's inode 0 nsec
fn:PASS:access(/tmp/test_bpffs_testdir/fs1/b/1) 0 nsec
fn:PASS:stat(/tmp/test_bpffs_testdir/fs1/map) 0 nsec
fn:PASS:renameat2(/fs1/c, /fs1/b, RENAME_EXCHANGE) 0 nsec
fn:PASS:stat(/tmp/test_bpffs_testdir/fs1/b) 0 nsec
fn:PASS:b should have c's inode 0 nsec
fn:PASS:access(/tmp/test_bpffs_testdir/fs1/c/1) 0 nsec
fn:PASS:renameat2(RENAME_NOREPLACE) 0 nsec
fn:PASS:access(/tmp/test_bpffs_testdir/fs1/b) 0 nsec
bpf_testmod.ko is already unloaded.
Loading bpf_testmod.ko...
Successfully loaded bpf_testmod.ko.
test_test_bpffs:PASS:clone 0 nsec
test_test_bpffs:PASS:waitpid 0 nsec
test_test_bpffs:PASS:bpffs test 0 nsec
#282 test_bpffs:OK
Summary: 1/0 PASSED, 0 SKIPPED, 0 FAILED
Successfully unloaded bpf_testmod.ko.
[0] https://github.com/danobi/vmtest
This is a follow-up of https://lore.kernel.org/bpf/20231024201852.1512720-1-chantr4@gmail.com/T/
v1 -> v2:
- use a TDIR name that is related to test
- use C-style comments
Signed-off-by: Manu Bretelle <chantr4@gmail.com>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Link: https://lore.kernel.org/r/20231031223606.2927976-1-chantr4@gmail.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
|
|
Add a test to check if the verifier correctly reason about the sign
of an immediate spilled to stack by BPF_ST instruction.
Signed-off-by: Hao Sun <sunhao.th@gmail.com>
Link: https://lore.kernel.org/r/20231101-fix-check-stack-write-v3-2-f05c2b1473d5@gmail.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
|
|
I often regenerate all YNL files in the tree to make sure they
are in sync with the codegen and specs. Generator rewrites
the files unconditionally, so since make looks at file modification
time to decide what to rebuild - my next build takes longer.
We already generate the code to a tempfile most of the time,
only overwrite the target when we have to.
Before:
$ stat include/uapi/linux/netdev.h
File: include/uapi/linux/netdev.h
Size: 2307 Blocks: 8 IO Block: 4096 regular file
Access: 2023-10-27 15:19:56.347071940 -0700
Modify: 2023-10-27 15:19:45.089000900 -0700
Change: 2023-10-27 15:19:45.089000900 -0700
Birth: 2023-10-27 15:19:45.088000894 -0700
$ ./tools/net/ynl/ynl-regen.sh -f
[...]
$ stat include/uapi/linux/netdev.h
File: include/uapi/linux/netdev.h
Size: 2307 Blocks: 8 IO Block: 4096 regular file
Access: 2023-10-27 15:19:56.347071940 -0700
Modify: 2023-10-27 15:22:18.417968446 -0700
Change: 2023-10-27 15:22:18.417968446 -0700
Birth: 2023-10-27 15:19:45.088000894 -0700
After:
$ stat include/uapi/linux/netdev.h
File: include/uapi/linux/netdev.h
Size: 2307 Blocks: 8 IO Block: 4096 regular file
Access: 2023-10-27 15:22:41.520114221 -0700
Modify: 2023-10-27 15:22:18.417968446 -0700
Change: 2023-10-27 15:22:18.417968446 -0700
Birth: 2023-10-27 15:19:45.088000894 -0700
$ ./tools/net/ynl/ynl-regen.sh -f
[...]
$ stat include/uapi/linux/netdev.h
File: include/uapi/linux/netdev.h
Size: 2307 Blocks: 8 IO Block: 4096 regular file
Access: 2023-10-27 15:22:41.520114221 -0700
Modify: 2023-10-27 15:22:18.417968446 -0700
Change: 2023-10-27 15:22:18.417968446 -0700
Birth: 2023-10-27 15:19:45.088000894 -0700
Reviewed-by: Jiri Pirko <jiri@nvidia.com>
Link: https://lore.kernel.org/r/20231027223408.1865704-1-kuba@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
|
|
Add two enum values that the blamed commit omitted.
Fixes: f2f9dd164db0 ("netlink: specs: devlink: add the remaining command to generate complete split_ops")
Signed-off-by: Jiri Pirko <jiri@nvidia.com>
Link: https://lore.kernel.org/r/20231030161750.110420-1-jiri@resnulli.us
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
|
|
git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest
Pull kselftest updates from Shuah Khan:
- kbuild kselftest-merge target fixes
- fixes to several tests
- resctrl test fixes and enhancements
- ksft_perror() helper and reporting improvements
- printf attribute to kselftest prints to improve reporting
- documentation and clang build warning fixes
The bulk of the patches are for resctrl fixes and enhancements.
* tag 'linux_kselftest-next-6.7-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest: (51 commits)
selftests/resctrl: Fix MBM test failure when MBA unavailable
selftests/clone3: Report descriptive test names
selftests:modify the incorrect print format
selftests/efivarfs: create-read: fix a resource leak
selftests/ftrace: Add riscv support for kprobe arg tests
selftests/ftrace: add loongarch support for kprobe args char tests
selftests/amd-pstate: Added option to provide perf binary path
selftests/amd-pstate: Fix broken paths to run workloads in amd-pstate-ut
selftests/resctrl: Move run_benchmark() to a more fitting file
selftests/resctrl: Fix schemata write error check
selftests/resctrl: Reduce failures due to outliers in MBA/MBM tests
selftests/resctrl: Fix feature checks
selftests/resctrl: Refactor feature check to use resource and feature name
selftests/resctrl: Move _GNU_SOURCE define into Makefile
selftests/resctrl: Remove duplicate feature check from CMT test
selftests/resctrl: Extend signal handler coverage to unmount on receiving signal
selftests/resctrl: Fix uninitialized .sa_flags
selftests/resctrl: Cleanup benchmark argument parsing
selftests/resctrl: Remove ben_count variable
selftests/resctrl: Make benchmark command const and build it with pointers
...
|
|
git://git.kernel.org/pub/scm/linux/kernel/git/jgg/iommufd
Pull iommufd updates from Jason Gunthorpe:
"This brings three new iommufd capabilities:
- Dirty tracking for DMA.
AMD/ARM/Intel CPUs can now record if a DMA writes to a page in the
IOPTEs within the IO page table. This can be used to generate a
record of what memory is being dirtied by DMA activities during a
VM migration process. A VMM like qemu will combine the IOMMU dirty
bits with the CPU's dirty log to determine what memory to transfer.
VFIO already has a DMA dirty tracking framework that requires PCI
devices to implement tracking HW internally. The iommufd version
provides an alternative that the VMM can select, if available. The
two are designed to have very similar APIs.
- Userspace controlled attributes for hardware page tables
(HWPT/iommu_domain). There are currently a few generic attributes
for HWPTs (support dirty tracking, and parent of a nest). This is
an entry point for the userspace iommu driver to control the HW in
detail.
- Nested translation support for HWPTs. This is a 2D translation
scheme similar to the CPU where a DMA goes through a first stage to
determine an intermediate address which is then translated trough a
second stage to a physical address.
Like for CPU translation the first stage table would exist in VM
controlled memory and the second stage is in the kernel and matches
the VM's guest to physical map.
As every IOMMU has a unique set of parameter to describe the S1 IO
page table and its associated parameters the userspace IOMMU driver
has to marshal the information into the correct format.
This is 1/3 of the feature, it allows creating the nested
translation and binding it to VFIO devices, however the API to
support IOTLB and ATC invalidation of the stage 1 io page table,
and forwarding of IO faults are still in progress.
The series includes AMD and Intel support for dirty tracking. Intel
support for nested translation.
Along the way are a number of internal items:
- New iommu core items: ops->domain_alloc_user(),
ops->set_dirty_tracking, ops->read_and_clear_dirty(),
IOMMU_DOMAIN_NESTED, and iommu_copy_struct_from_user
- UAF fix in iopt_area_split()
- Spelling fixes and some test suite improvement"
* tag 'for-linus-iommufd' of git://git.kernel.org/pub/scm/linux/kernel/git/jgg/iommufd: (52 commits)
iommufd: Organize the mock domain alloc functions closer to Joerg's tree
iommufd/selftest: Fix page-size check in iommufd_test_dirty()
iommufd: Add iopt_area_alloc()
iommufd: Fix missing update of domains_itree after splitting iopt_area
iommu/vt-d: Disallow read-only mappings to nest parent domain
iommu/vt-d: Add nested domain allocation
iommu/vt-d: Set the nested domain to a device
iommu/vt-d: Make domain attach helpers to be extern
iommu/vt-d: Add helper to setup pasid nested translation
iommu/vt-d: Add helper for nested domain allocation
iommu/vt-d: Extend dmar_domain to support nested domain
iommufd: Add data structure for Intel VT-d stage-1 domain allocation
iommu/vt-d: Enhance capability check for nested parent domain allocation
iommufd/selftest: Add coverage for IOMMU_HWPT_ALLOC with nested HWPTs
iommufd/selftest: Add nested domain allocation for mock domain
iommu: Add iommu_copy_struct_from_user helper
iommufd: Add a nested HW pagetable object
iommu: Pass in parent domain with user_data to domain_alloc_user op
iommufd: Share iommufd_hwpt_alloc with IOMMUFD_OBJ_HWPT_NESTED
iommufd: Derive iommufd_hwpt_paging from iommufd_hw_pagetable
...
|
|
git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic
Pull ia64 removal and asm-generic updates from Arnd Bergmann:
- The ia64 architecture gets its well-earned retirement as planned,
now that there is one last (mostly) working release that will be
maintained as an LTS kernel.
- The architecture specific system call tables are updated for the
added map_shadow_stack() syscall and to remove references to the
long-gone sys_lookup_dcookie() syscall.
* tag 'asm-generic-6.7' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic:
hexagon: Remove unusable symbols from the ptrace.h uapi
asm-generic: Fix spelling of architecture
arch: Reserve map_shadow_stack() syscall number for all architectures
syscalls: Cleanup references to sys_lookup_dcookie()
Documentation: Drop or replace remaining mentions of IA64
lib/raid6: Drop IA64 support
Documentation: Drop IA64 from feature descriptions
kernel: Drop IA64 support from sig_fault handlers
arch: Remove Itanium (IA-64) architecture
|
|
Pull io_uring {get,set}sockopt support from Jens Axboe:
"This adds support for using getsockopt and setsockopt via io_uring.
The main use cases for this is to enable use of direct descriptors,
rather than first instantiating a normal file descriptor, doing the
option tweaking needed, then turning it into a direct descriptor. With
this support, we can avoid needing a regular file descriptor
completely.
The net and bpf bits have been signed off on their side"
* tag 'for-6.7/io_uring-sockopt-2023-10-30' of git://git.kernel.dk/linux:
selftests/bpf/sockopt: Add io_uring support
io_uring/cmd: Introduce SOCKET_URING_OP_SETSOCKOPT
io_uring/cmd: Introduce SOCKET_URING_OP_GETSOCKOPT
io_uring/cmd: return -EOPNOTSUPP if net is disabled
selftests/net: Extract uring helpers to be reusable
tools headers: Grab copy of io_uring.h
io_uring/cmd: Pass compat mode in issue_flags
net/socket: Break down __sys_getsockopt
net/socket: Break down __sys_setsockopt
bpf: Add sockptr support for setsockopt
bpf: Add sockptr support for getsockopt
|
|
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 TDX updates from Dave Hansen:
"The majority of this is a rework of the assembly and C wrappers that
are used to talk to the TDX module and VMM. This is a nice cleanup in
general but is also clearing the way for using this code when Linux is
the TDX VMM.
There are also some tidbits to make TDX guests play nicer with Hyper-V
and to take advantage the hardware TSC.
Summary:
- Refactor and clean up TDX hypercall/module call infrastructure
- Handle retrying/resuming page conversion hypercalls
- Make sure to use the (shockingly) reliable TSC in TDX guests"
[ TLA reminder: TDX is "Trust Domain Extensions", Intel's guest VM
confidentiality technology ]
* tag 'x86_tdx_for_6.7' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/tdx: Mark TSC reliable
x86/tdx: Fix __noreturn build warning around __tdx_hypercall_failed()
x86/virt/tdx: Make TDX_MODULE_CALL handle SEAMCALL #UD and #GP
x86/virt/tdx: Wire up basic SEAMCALL functions
x86/tdx: Remove 'struct tdx_hypercall_args'
x86/tdx: Reimplement __tdx_hypercall() using TDX_MODULE_CALL asm
x86/tdx: Make TDX_HYPERCALL asm similar to TDX_MODULE_CALL
x86/tdx: Extend TDX_MODULE_CALL to support more TDCALL/SEAMCALL leafs
x86/tdx: Pass TDCALL/SEAMCALL input/output registers via a structure
x86/tdx: Rename __tdx_module_call() to __tdcall()
x86/tdx: Make macros of TDCALLs consistent with the spec
x86/tdx: Skip saving output regs when SEAMCALL fails with VMFailInvalid
x86/tdx: Zero out the missing RSI in TDX_HYPERCALL macro
x86/tdx: Retry partially-completed page conversion hypercalls
|
|
On Ubuntu and probably other distros, ptrace permissions are tightend a
bit by default; i.e., /proc/sys/kernel/yama/ptrace_score is set to 1.
This cases memfd_secret's ptrace attach test fails with a permission
error. Set it to 0 piror to running the program.
Link: https://lkml.kernel.org/r/20231030-selftest-v1-1-743df68bb996@linux.dev
Signed-off-by: Itaru Kitayama <itaru.kitayama@linux.dev>
Cc: Shuah Khan <shuah@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
|
|
Check ProtectionKey field in /proc/*/smaps output, if system supports
protection keys feature.
[adobriyan@gmail.com: test support in the beginning of the program, use syscall, not glibc pkey_alloc(3) which may not compile]
Link: https://lkml.kernel.org/r/ac05efa7-d2a0-48ad-b704-ffdd5450582e@p183
Signed-off-by: Swarup Laxman Kotiaklapudi <swarupkotikalapudi@gmail.com>
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Reviewed-by: Swarup Laxman Kotikalapudi<swarupkotikalapudi@gmail.com>
Tested-by: Swarup Laxman Kotikalapudi<swarupkotikalapudi@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
|
|
* fix embarassing /proc/*/smaps test bug due to a typo in variable name
it tested only the first line of the output if vsyscall is enabled:
ffffffffff600000-ffffffffff601000 r-xp ...
so test passed but tested only VMA location and permissions.
* add "KSM" entry, unnoticed because (1)
* swap "r-xp" and "--xp" vsyscall test strings,
also unnoticed because (1)
Link: https://lkml.kernel.org/r/76f42cce-b1ab-45ec-b6b2-4c64f0dccb90@p183
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Tested-by: Swarup Laxman Kotikalapudi<swarupkotikalapudi@mail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
|
|
We recently encountered a bug that makes all zswap store attempt fail.
Specifically, after:
"141fdeececb3 mm/zswap: delay the initialization of zswap"
if we build a kernel with zswap disabled by default, then enabled after
the swapfile is set up, the zswap tree will not be initialized. As a
result, all zswap store calls will be short-circuited. We have to perform
another swapon to get zswap working properly again.
Fortunately, this issue has since been fixed by the patch that kills
frontswap:
"42c06a0e8ebe mm: kill frontswap"
which performs zswap_swapon() unconditionally, i.e always initializing
the zswap tree.
This test add a sanity check that ensure zswap storing works as
intended.
Link: https://lkml.kernel.org/r/20231020222009.2358953-1-nphamcs@gmail.com
Signed-off-by: Nhat Pham <nphamcs@gmail.com>
Acked-by: Rik van Riel <riel@surriel.com>
Cc: Domenico Cerasuolo <cerasuolodomenico@gmail.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Shuah Khan <shuah@kernel.org>
Cc: Tejun Heo <tj@kernel.org>
Cc: Zefan Li <lizefan.x@bytedance.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
|
|
git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux
Pull arm64 updates from Catalin Marinas:
"No major architecture features this time around, just some new HWCAP
definitions, support for the Ampere SoC PMUs and a few fixes/cleanups.
The bulk of the changes is reworking of the CPU capability checking
code (cpus_have_cap() etc).
- Major refactoring of the CPU capability detection logic resulting
in the removal of the cpus_have_const_cap() function and migrating
the code to "alternative" branches where possible
- Backtrace/kgdb: use IPIs and pseudo-NMI
- Perf and PMU:
- Add support for Ampere SoC PMUs
- Multi-DTC improvements for larger CMN configurations with
multiple Debug & Trace Controllers
- Rework the Arm CoreSight PMU driver to allow separate
registration of vendor backend modules
- Fixes: add missing MODULE_DEVICE_TABLE to the amlogic perf
driver; use device_get_match_data() in the xgene driver; fix
NULL pointer dereference in the hisi driver caused by calling
cpuhp_state_remove_instance(); use-after-free in the hisi driver
- HWCAP updates:
- FEAT_SVE_B16B16 (BFloat16)
- FEAT_LRCPC3 (release consistency model)
- FEAT_LSE128 (128-bit atomic instructions)
- SVE: remove a couple of pseudo registers from the cpufeature code.
There is logic in place already to detect mismatched SVE features
- Miscellaneous:
- Reduce the default swiotlb size (currently 64MB) if no ZONE_DMA
bouncing is needed. The buffer is still required for small
kmalloc() buffers
- Fix module PLT counting with !RANDOMIZE_BASE
- Restrict CPU_BIG_ENDIAN to LLVM IAS 15.x or newer move
synchronisation code out of the set_ptes() loop
- More compact cpufeature displaying enabled cores
- Kselftest updates for the new CPU features"
* tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux: (83 commits)
arm64: Restrict CPU_BIG_ENDIAN to GNU as or LLVM IAS 15.x or newer
arm64: module: Fix PLT counting when CONFIG_RANDOMIZE_BASE=n
arm64, irqchip/gic-v3, ACPI: Move MADT GICC enabled check into a helper
perf: hisi: Fix use-after-free when register pmu fails
drivers/perf: hisi_pcie: Initialize event->cpu only on success
drivers/perf: hisi_pcie: Check the type first in pmu::event_init()
arm64: cpufeature: Change DBM to display enabled cores
arm64: cpufeature: Display the set of cores with a feature
perf/arm-cmn: Enable per-DTC counter allocation
perf/arm-cmn: Rework DTC counters (again)
perf/arm-cmn: Fix DTC domain detection
drivers: perf: arm_pmuv3: Drop some unused arguments from armv8_pmu_init()
drivers: perf: arm_pmuv3: Read PMMIR_EL1 unconditionally
drivers/perf: hisi: use cpuhp_state_remove_instance_nocalls() for hisi_hns3_pmu uninit process
clocksource/drivers/arm_arch_timer: limit XGene-1 workaround
arm64: Remove system_uses_lse_atomics()
arm64: Mark the 'addr' argument to set_ptes() and __set_pte_at() as unused
drivers/perf: xgene: Use device_get_match_data()
perf/amlogic: add missing MODULE_DEVICE_TABLE
arm64/mm: Hoist synchronization out of set_ptes() loop
...
|
|
git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux
Pull devicetree updates from Rob Herring:
- Add a kselftest to check for unprobed DT devices
- Fix address translation for some 3 address cells cases
- Refactor firmware node refcounting for AMBA bus
- Add bindings for qcom,sm4450-pdc, Qualcomm Kryo 465 CPU, and
Freescale QMC HDLC
- Add Marantec vendor prefix
- Convert qcom,pm8921-keypad, cnxt,cx92755-wdt, da9062-wdt, and
atmel,at91rm9200-wdt bindings to DT schema
- Several additionalProperties/unevaluatedProperties on child node
schemas fixes
- Drop reserved-memory bindings which now live in dtschema project
- Fix a reference to rockchip,inno-usb2phy.yaml
- Remove backlight nodes from display panel examples
- Expand example for using DT_SCHEMA_FILES
- Merge simple LVDS panel bindings to one binding doc
* tag 'devicetree-for-6.7' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux: (34 commits)
dt-bindings: soc: fsl: cpm_qe: cpm1-scc-qmc: Add support for QMC HDLC
dt-bindings: soc: fsl: cpm_qe: cpm1-scc-qmc: Add 'additionalProperties: false' in child nodes
dt-bindings: soc: fsl: cpm_qe: cpm1-scc-qmc: Fix example property name
dt-bindings: arm,coresight-cti: Add missing additionalProperties on child nodes
dt-bindings: arm,coresight-cti: Drop type for 'cpu' property
dt-bindings: soundwire: Add reference to soundwire-controller.yaml schema
dt-bindings: input: syna,rmi4: Make "additionalProperties: true" explicit
media: dt-bindings: ti,ds90ub960: Add missing type for "i2c-alias"
dt-bindings: input: qcom,pm8921-keypad: convert to YAML format
of: overlay: unittest: overlay_bad_unresolved: Spelling s/ok/okay/
of: address: Consolidate bus .map() functions
of: address: Store number of bus flag cells rather than bool
of: unittest: Add tests for address translations
of: address: Remove duplicated functions
of: address: Fix address translation when address-size is greater than 2
dt-bindings: watchdog: cnxt,cx92755-wdt: convert txt to yaml
dt-bindings: watchdog: da9062-wdt: convert txt to yaml
dt-bindings: watchdog: fsl,scu-wdt: Document imx8dl
dt-bindings: watchdog: atmel,at91rm9200-wdt: convert txt to yaml
dt-bindings: usb: rockchip,dwc3: update inno usb2 phy binding name
...
|
|
git://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-drivers-x86
Pull x86 platform driver updates from Ilpo Järvinen:
- asus-wmi: Support for screenpad and solve brightness key press
duplication
- int3472: Eliminate the last use of deprecated GPIO functions
- mlxbf-pmc: New HW support
- msi-ec: Support new EC configurations
- thinkpad_acpi: Support reading aux MAC address during passthrough
- wmi: Fixes & improvements
- x86-android-tablets: Detection fix and avoid use of GPIO private APIs
- Debug & metrics interface improvements
- Miscellaneous cleanups / fixes / improvements
* tag 'platform-drivers-x86-v6.7-1' of git://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-drivers-x86: (80 commits)
platform/x86: inspur-platform-profile: Add platform profile support
platform/x86: thinkpad_acpi: Add battery quirk for Thinkpad X120e
platform/x86: wmi: Decouple WMI device removal from wmi_block_list
platform/x86: wmi: Fix opening of char device
platform/x86: wmi: Fix probe failure when failing to register WMI devices
platform/x86: wmi: Fix refcounting of WMI devices in legacy functions
platform/x86: wmi: Decouple probe deferring from wmi_block_list
platform/x86/amd/hsmp: Fix iomem handling
platform/x86: asus-wmi: Do not report brightness up/down keys when also reported by acpi_video
platform/x86: thinkpad_acpi: replace deprecated strncpy with memcpy
tools/power/x86/intel-speed-select: v1.18 release
tools/power/x86/intel-speed-select: Use cgroup isolate for CPU 0
tools/power/x86/intel-speed-select: Increase max CPUs in one request
tools/power/x86/intel-speed-select: Display error for core-power support
tools/power/x86/intel-speed-select: No TRL for non compute domains
tools/power/x86/intel-speed-select: turbo-mode enable disable swapped
tools/power/x86/intel-speed-select: Update help for TRL
tools/power/x86/intel-speed-select: Sanitize integer arguments
platform/x86: acer-wmi: Remove void function return
platform/x86/amd/pmc: Add dump_custom_stb module parameter
...
|
