kernel/linux.git/arch/ia64, branch v6.6.131

vgacon: rework screen_info #ifdef checks

2024-06-27T11:49:15+00:00

[ Upstream commit 8a736ddfc861b2a217c935c2f461a8004add8247 ] On non-x86 architectures, the screen_info variable is generally only used for the VGA console where supported, and in some cases the EFI framebuffer or vga16fb. Now that we have a definite list of which architectures actually use it for what, use consistent #ifdef checks so the global variable is only defined when it is actually used on those architectures. Loongarch and riscv have no support for vgacon or vga16fb, but they support EFI firmware, so only that needs to be checked, and the initialization can be removed because that is handled by EFI. IA64 has both vgacon and EFI, though EFI apparently never uses a framebuffer here. Reviewed-by: Javier Martinez Canillas Reviewed-by: Thomas Zimmermann Reviewed-by: Khalid Aziz Acked-by: Helge Deller Signed-off-by: Arnd Bergmann Link: https://lore.kernel.org/r/20231009211845.3136536-3-arnd@kernel.org Signed-off-by: Greg Kroah-Hartman Stable-dep-of: beb2800074c1 ("LoongArch: Fix entry point in kernel image header") Signed-off-by: Sasha Levin

cpu-hotplug: Provide prototypes for arch CPU registration

2023-10-11T12:27:37+00:00

Provide common prototypes for arch_register_cpu() and arch_unregister_cpu(). These are called by acpi_processor.c, with weak versions, so the prototype for this is already set. It is generally not necessary for function prototypes to be conditional on preprocessor macros. Some architectures (e.g. Loongarch) are missing the prototype for this, and rather than add it to Loongarch's asm/cpu.h, do the job once for everyone. Since this covers everyone, remove the now unnecessary prototypes in asm/cpu.h, and therefore remove the 'static' from one of ia64's arch_register_cpu() definitions. [ tglx: Bring back the ia64 part and remove the ACPI prototypes ] Signed-off-by: Russell King (Oracle) Signed-off-by: Thomas Gleixner Link: https://lore.kernel.org/r/E1qkoRr-0088Q8-Da@rmk-PC.armlinux.org.uk

acpi: Provide ia64 dummy implementation of acpi_proc_quirk_mwait_check()

2023-09-11T08:13:17+00:00

Commit 0a0e2ea642f6 ("ACPI: processor: Move MWAIT quirk out of acpi_processor.c") moved the MWAIT quirk code into arch/x86 but left calls to it in the ACPI PDC processor code that is shared with Itanium, breaking the latter build. Since the quirk is specific to a certain x86-based platform, stub out the function acpi_proc_quirk_mwait_check() when building for ia64. Fixes: 0a0e2ea642f6 ("ACPI: processor: Move MWAIT quirk out of acpi_processor.c") Signed-off-by: Ard Biesheuvel

Merge tag 'kbuild-v6.6' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild

2023-09-05T18:01:47+00:00

Pull Kbuild updates from Masahiro Yamada: - Enable -Wenum-conversion warning option - Refactor the rpm-pkg target - Fix scripts/setlocalversion to consider annotated tags for rt-kernel - Add a jump key feature for the search menu of 'make nconfig' - Support Qt6 for 'make xconfig' - Enable -Wformat-overflow, -Wformat-truncation, -Wstringop-overflow, and -Wrestrict warnings for W=1 builds - Replace with for alpha, ia64, and sparc - Support DEB_BUILD_OPTIONS=parallel=N for the debian source package - Refactor scripts/Makefile.modinst and fix some modules_sign issues - Add a new Kconfig env variable to warn symbols that are not defined anywhere - Show help messages of config fragments in 'make help' * tag 'kbuild-v6.6' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild: (62 commits) kconfig: fix possible buffer overflow kbuild: Show marked Kconfig fragments in "help" kconfig: add warn-unknown-symbols sanity check kbuild: dummy-tools: make MPROFILE_KERNEL checks work on BE Documentation/llvm: refresh docs modpost: Skip .llvm.call-graph-profile section check kbuild: support modules_sign for external modules as well kbuild: support 'make modules_sign' with CONFIG_MODULE_SIG_ALL=n kbuild: move more module installation code to scripts/Makefile.modinst kbuild: reduce the number of mkdir calls during modules_install kbuild: remove $(MODLIB)/source symlink kbuild: move depmod rule to scripts/Makefile.modinst kbuild: add modules_sign to no-{compiler,sync-config}-targets kbuild: do not run depmod for 'make modules_sign' kbuild: deb-pkg: support DEB_BUILD_OPTIONS=parallel=N in debian/rules alpha: remove alpha: replace #include with #include ia64: remove ia64: replace #include with #include sparc: remove ...

Merge tag 'x86_shstk_for_6.6-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

2023-08-31T19:20:12+00:00

Pull x86 shadow stack support from Dave Hansen: "This is the long awaited x86 shadow stack support, part of Intel's Control-flow Enforcement Technology (CET). CET consists of two related security features: shadow stacks and indirect branch tracking. This series implements just the shadow stack part of this feature, and just for userspace. The main use case for shadow stack is providing protection against return oriented programming attacks. It works by maintaining a secondary (shadow) stack using a special memory type that has protections against modification. When executing a CALL instruction, the processor pushes the return address to both the normal stack and to the special permission shadow stack. Upon RET, the processor pops the shadow stack copy and compares it to the normal stack copy. For more information, refer to the links below for the earlier versions of this patch set" Link: https://lore.kernel.org/lkml/20220130211838.8382-1-rick.p.edgecombe@intel.com/ Link: https://lore.kernel.org/lkml/20230613001108.3040476-1-rick.p.edgecombe@intel.com/ * tag 'x86_shstk_for_6.6-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (47 commits) x86/shstk: Change order of __user in type x86/ibt: Convert IBT selftest to asm x86/shstk: Don't retry vm_munmap() on -EINTR x86/kbuild: Fix Documentation/ reference x86/shstk: Move arch detail comment out of core mm x86/shstk: Add ARCH_SHSTK_STATUS x86/shstk: Add ARCH_SHSTK_UNLOCK x86: Add PTRACE interface for shadow stack selftests/x86: Add shadow stack test x86/cpufeatures: Enable CET CR4 bit for shadow stack x86/shstk: Wire in shadow stack interface x86: Expose thread features in /proc/$PID/status x86/shstk: Support WRSS for userspace x86/shstk: Introduce map_shadow_stack syscall x86/shstk: Check that signal frame is shadow stack mem x86/shstk: Check that SSP is aligned on sigreturn x86/shstk: Handle signals for shadow stack x86/shstk: Introduce routines modifying shstk x86/shstk: Handle thread shadow stack x86/shstk: Add user-mode shadow stack support ...

Merge tag 'mm-nonmm-stable-2023-08-28-22-48' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

2023-08-29T21:53:51+00:00

Pull non-MM updates from Andrew Morton: - An extensive rework of kexec and crash Kconfig from Eric DeVolder ("refactor Kconfig to consolidate KEXEC and CRASH options") - kernel.h slimming work from Andy Shevchenko ("kernel.h: Split out a couple of macros to args.h") - gdb feature work from Kuan-Ying Lee ("Add GDB memory helper commands") - vsprintf inclusion rationalization from Andy Shevchenko ("lib/vsprintf: Rework header inclusions") - Switch the handling of kdump from a udev scheme to in-kernel handling, by Eric DeVolder ("crash: Kernel handling of CPU and memory hot un/plug") - Many singleton patches to various parts of the tree * tag 'mm-nonmm-stable-2023-08-28-22-48' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (81 commits) document while_each_thread(), change first_tid() to use for_each_thread() drivers/char/mem.c: shrink character device's devlist[] array x86/crash: optimize CPU changes crash: change crash_prepare_elf64_headers() to for_each_possible_cpu() crash: hotplug support for kexec_load() x86/crash: add x86 crash hotplug support crash: memory and CPU hotplug sysfs attributes kexec: exclude elfcorehdr from the segment digest crash: add generic infrastructure for crash hotplug support crash: move a few code bits to setup support of crash hotplug kstrtox: consistently use _tolower() kill do_each_thread() nilfs2: fix WARNING in mark_buffer_dirty due to discarded buffer reuse scripts/bloat-o-meter: count weak symbol sizes treewide: drop CONFIG_EMBEDDED lockdep: fix static memory detection even more lib/vsprintf: declare no_hash_pointers in sprintf.h lib/vsprintf: split out sprintf() and friends kernel/fork: stop playing lockless games for exe_file replacement adfs: delete unused "union adfs_dirtail" definition ...

Merge tag 'mm-stable-2023-08-28-18-26' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

2023-08-29T21:25:26+00:00

Pull MM updates from Andrew Morton: - Some swap cleanups from Ma Wupeng ("fix WARN_ON in add_to_avail_list") - Peter Xu has a series (mm/gup: Unify hugetlb, speed up thp") which reduces the special-case code for handling hugetlb pages in GUP. It also speeds up GUP handling of transparent hugepages. - Peng Zhang provides some maple tree speedups ("Optimize the fast path of mas_store()"). - Sergey Senozhatsky has improved te performance of zsmalloc during compaction (zsmalloc: small compaction improvements"). - Domenico Cerasuolo has developed additional selftest code for zswap ("selftests: cgroup: add zswap test program"). - xu xin has doe some work on KSM's handling of zero pages. These changes are mainly to enable the user to better understand the effectiveness of KSM's treatment of zero pages ("ksm: support tracking KSM-placed zero-pages"). - Jeff Xu has fixes the behaviour of memfd's MEMFD_NOEXEC_SCOPE_NOEXEC_ENFORCED sysctl ("mm/memfd: fix sysctl MEMFD_NOEXEC_SCOPE_NOEXEC_ENFORCED"). - David Howells has fixed an fscache optimization ("mm, netfs, fscache: Stop read optimisation when folio removed from pagecache"). - Axel Rasmussen has given userfaultfd the ability to simulate memory poisoning ("add UFFDIO_POISON to simulate memory poisoning with UFFD"). - Miaohe Lin has contributed some routine maintenance work on the memory-failure code ("mm: memory-failure: remove unneeded PageHuge() check"). - Peng Zhang has contributed some maintenance work on the maple tree code ("Improve the validation for maple tree and some cleanup"). - Hugh Dickins has optimized the collapsing of shmem or file pages into THPs ("mm: free retracted page table by RCU"). - Jiaqi Yan has a patch series which permits us to use the healthy subpages within a hardware poisoned huge page for general purposes ("Improve hugetlbfs read on HWPOISON hugepages"). - Kemeng Shi has done some maintenance work on the pagetable-check code ("Remove unused parameters in page_table_check"). - More folioification work from Matthew Wilcox ("More filesystem folio conversions for 6.6"), ("Followup folio conversions for zswap"). And from ZhangPeng ("Convert several functions in page_io.c to use a folio"). - page_ext cleanups from Kemeng Shi ("minor cleanups for page_ext"). - Baoquan He has converted some architectures to use the GENERIC_IOREMAP ioremap()/iounmap() code ("mm: ioremap: Convert architectures to take GENERIC_IOREMAP way"). - Anshuman Khandual has optimized arm64 tlb shootdown ("arm64: support batched/deferred tlb shootdown during page reclamation/migration"). - Better maple tree lockdep checking from Liam Howlett ("More strict maple tree lockdep"). Liam also developed some efficiency improvements ("Reduce preallocations for maple tree"). - Cleanup and optimization to the secondary IOMMU TLB invalidation, from Alistair Popple ("Invalidate secondary IOMMU TLB on permission upgrade"). - Ryan Roberts fixes some arm64 MM selftest issues ("selftests/mm fixes for arm64"). - Kemeng Shi provides some maintenance work on the compaction code ("Two minor cleanups for compaction"). - Some reduction in mmap_lock pressure from Matthew Wilcox ("Handle most file-backed faults under the VMA lock"). - Aneesh Kumar contributes code to use the vmemmap optimization for DAX on ppc64, under some circumstances ("Add support for DAX vmemmap optimization for ppc64"). - page-ext cleanups from Kemeng Shi ("add page_ext_data to get client data in page_ext"), ("minor cleanups to page_ext header"). - Some zswap cleanups from Johannes Weiner ("mm: zswap: three cleanups"). - kmsan cleanups from ZhangPeng ("minor cleanups for kmsan"). - VMA handling cleanups from Kefeng Wang ("mm: convert to vma_is_initial_heap/stack()"). - DAMON feature work from SeongJae Park ("mm/damon/sysfs-schemes: implement DAMOS tried total bytes file"), ("Extend DAMOS filters for address ranges and DAMON monitoring targets"). - Compaction work from Kemeng Shi ("Fixes and cleanups to compaction"). - Liam Howlett has improved the maple tree node replacement code ("maple_tree: Change replacement strategy"). - ZhangPeng has a general code cleanup - use the K() macro more widely ("cleanup with helper macro K()"). - Aneesh Kumar brings memmap-on-memory to ppc64 ("Add support for memmap on memory feature on ppc64"). - pagealloc cleanups from Kemeng Shi ("Two minor cleanups for pcp list in page_alloc"), ("Two minor cleanups for get pageblock migratetype"). - Vishal Moola introduces a memory descriptor for page table tracking, "struct ptdesc" ("Split ptdesc from struct page"). - memfd selftest maintenance work from Aleksa Sarai ("memfd: cleanups for vm.memfd_noexec"). - MM include file rationalization from Hugh Dickins ("arch: include asm/cacheflush.h in asm/hugetlb.h"). - THP debug output fixes from Hugh Dickins ("mm,thp: fix sloppy text output"). - kmemleak improvements from Xiaolei Wang ("mm/kmemleak: use object_cache instead of kmemleak_initialized"). - More folio-related cleanups from Matthew Wilcox ("Remove _folio_dtor and _folio_order"). - A VMA locking scalability improvement from Suren Baghdasaryan ("Per-VMA lock support for swap and userfaults"). - pagetable handling cleanups from Matthew Wilcox ("New page table range API"). - A batch of swap/thp cleanups from David Hildenbrand ("mm/swap: stop using page->private on tail pages for THP_SWAP + cleanups"). - Cleanups and speedups to the hugetlb fault handling from Matthew Wilcox ("Change calling convention for ->huge_fault"). - Matthew Wilcox has also done some maintenance work on the MM subsystem documentation ("Improve mm documentation"). * tag 'mm-stable-2023-08-28-18-26' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (489 commits) maple_tree: shrink struct maple_tree maple_tree: clean up mas_wr_append() secretmem: convert page_is_secretmem() to folio_is_secretmem() nios2: fix flush_dcache_page() for usage from irq context hugetlb: add documentation for vma_kernel_pagesize() mm: add orphaned kernel-doc to the rst files. mm: fix clean_record_shared_mapping_range kernel-doc mm: fix get_mctgt_type() kernel-doc mm: fix kernel-doc warning from tlb_flush_rmaps() mm: remove enum page_entry_size mm: allow ->huge_fault() to be called without the mmap_lock held mm: move PMD_ORDER to pgtable.h mm: remove checks for pte_index memcg: remove duplication detection for mem_cgroup_uncharge_swap mm/huge_memory: work on folio->swap instead of page->private when splitting folio mm/swap: inline folio_set_swap_entry() and folio_swap_entry() mm/swap: use dedicated entry for swap in folio mm/swap: stop using page->private on tail pages for THP_SWAP selftests/mm: fix WARNING comparing pointer to 0 selftests: cgroup: fix test_kmem_memcg_deletion kernel mem check ...

Merge tag 'acpi-6.6-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm

2023-08-29T00:58:39+00:00

Pull ACPI updates from Rafael Wysocki: "These include new ACPICA material, a rework of the ACPI thermal driver, a switch-over of the ACPI processor driver to using _OSC instead of (long deprecated) _PDC for CPU initialization, a rework of firmware notifications handling in several drivers, fixes and cleanups for suspend-to-idle handling on AMD systems, ACPI backlight driver updates and more. Specifics: - Update the ACPICA code in the kernel to upstream revision 20230628 including the following changes: - Suppress a GCC 12 dangling-pointer warning (Philip Prindeville) - Reformat the ACPI_STATE_COMMON macro and its users (George Guo) - Replace the ternary operator with ACPI_MIN() (Jiangshan Yi) - Add support for _DSC as per ACPI 6.5 (Saket Dumbre) - Remove a duplicate macro from zephyr header (Najumon B.A) - Add data structures for GED and _EVT tracking (Jose Marinho) - Fix misspelled CDAT DSMAS define (Dave Jiang) - Simplify an error message in acpi_ds_result_push() (Christophe Jaillet) - Add a struct size macro related to SRAT (Dave Jiang) - Add AML_NO_OPERAND_RESOLVE flag to Timer (Abhishek Mainkar) - Add support for RISC-V external interrupt controllers in MADT (Sunil V L) - Add RHCT flags, CMO and MMU nodes (Sunil V L) - Change ACPICA version to 20230628 (Bob Moore) - Introduce new wrappers for ACPICA notify handler install/remove and convert multiple drivers to using their own Notify() handlers instead of the ACPI bus type .notify() slated for removal (Michal Wilczynski) - Add backlight=native DMI quirk for Apple iMac12,1 and iMac12,2 (Hans de Goede) - Put ACPI video and its child devices explicitly into D0 on boot to avoid platform firmware confusion (Kai-Heng Feng) - Add backlight=native DMI quirk for Lenovo Ideapad Z470 (Jiri Slaby) - Support obtaining physical CPU ID from MADT on LoongArch (Bibo Mao) - Convert ACPI CPU initialization to using _OSC instead of _PDC that has been depreceted since 2018 and dropped from the specification in ACPI 6.5 (Michal Wilczynski, Rafael Wysocki) - Drop non-functional nocrt parameter from ACPI thermal (Mario Limonciello) - Clean up the ACPI thermal driver, rework the handling of firmware notifications in it and make it provide a table of generic trip point structures to the core during initialization (Rafael Wysocki) - Defer enumeration of devices with _DEP pointing to IVSC (Wentong Wu) - Install SystemCMOS address space handler for ACPI000E (TAD) to meet platform firmware expectations on some platforms (Zhang Rui) - Fix finding the generic error data in the ACPi extlog driver for compatibility with old and new firmware interface versions (Xiaochun Lee) - Remove assorted unused declarations of functions (Yue Haibing) - Move AMBA bus scan handling into arm64 specific directory (Sudeep Holla) - Fix and clean up suspend-to-idle interface for AMD systems (Mario Limonciello, Andy Shevchenko) - Fix string truncation warning in pnpacpi_add_device() (Sunil V L)" * tag 'acpi-6.6-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (66 commits) ACPI: x86: s2idle: Add a function to get LPS0 constraint for a device ACPI: x86: s2idle: Add for_each_lpi_constraint() helper ACPI: x86: s2idle: Add more debugging for AMD constraints parsing ACPI: x86: s2idle: Fix a logic error parsing AMD constraints table ACPI: x86: s2idle: Catch multiple ACPI_TYPE_PACKAGE objects ACPI: x86: s2idle: Post-increment variables when getting constraints ACPI: Adjust #ifdef for *_lps0_dev use ACPI: TAD: Install SystemCMOS address space handler for ACPI000E ACPI: Remove assorted unused declarations of functions ACPI: extlog: Fix finding the generic error data for v3 structure PNP: ACPI: Fix string truncation warning ACPI: Remove unused extern declaration acpi_paddr_to_node() ACPI: video: Add backlight=native DMI quirk for Apple iMac12,1 and iMac12,2 ACPI: video: Put ACPI video and its child devices into D0 on boot ACPI: processor: LoongArch: Get physical ID from MADT ACPI: scan: Defer enumeration of devices with a _DEP pointing to IVSC device ACPI: thermal: Eliminate code duplication from acpi_thermal_notify() ACPI: thermal: Drop unnecessary thermal zone callbacks ACPI: thermal: Rework thermal_get_trend() ACPI: thermal: Use trip point table to register thermal zones ...

Merge tag 'v6.6-vfs.fchmodat2' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs

2023-08-28T18:25:27+00:00

Pull fchmodat2 system call from Christian Brauner: "This adds the fchmodat2() system call. It is a revised version of the fchmodat() system call, adding a missing flag argument. Support for both AT_SYMLINK_NOFOLLOW and AT_EMPTY_PATH are included. Adding this system call revision has been a longstanding request but so far has always fallen through the cracks. While the kernel implementation of fchmodat() does not have a flag argument the libc provided POSIX-compliant fchmodat(3) version does. Both glibc and musl have to implement a workaround in order to support AT_SYMLINK_NOFOLLOW (see [1] and [2]). The workaround is brittle because it relies not just on O_PATH and O_NOFOLLOW semantics and procfs magic links but also on our rather inconsistent symlink semantics. This gives userspace a proper fchmodat2() system call that libcs can use to properly implement fchmodat(3) and allows them to get rid of their hacks. In this case it will immediately benefit them as the current workaround is already defunct because of aformentioned inconsistencies. In addition to AT_SYMLINK_NOFOLLOW, give userspace the ability to use AT_EMPTY_PATH with fchmodat2(). This is already possible with fchownat() so there's no reason to not also support it for fchmodat2(). The implementation is simple and comes with selftests. Implementation of the system call and wiring up the system call are done as separate patches even though they could arguably be one patch. But in case there are merge conflicts from other system call additions it can be beneficial to have separate patches" Link: https://sourceware.org/git/?p=glibc.git;a=blob;f=sysdeps/unix/sysv/linux/fchmodat.c;h=17eca54051ee28ba1ec3f9aed170a62630959143;hb=a492b1e5ef7ab50c6fdd4e4e9879ea5569ab0a6c#l35 [1] Link: https://git.musl-libc.org/cgit/musl/tree/src/stat/fchmodat.c?id=718f363bc2067b6487900eddc9180c84e7739f80#n28 [2] * tag 'v6.6-vfs.fchmodat2' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs: selftests: fchmodat2: remove duplicate unneeded defines fchmodat2: add support for AT_EMPTY_PATH selftests: Add fchmodat2 selftest arch: Register fchmodat2, usually as syscall 452 fs: Add fchmodat2() Non-functional cleanup of a "__user * filename"

Merge branch 'acpi-processor'

2023-08-25T18:40:50+00:00

Merge ACPI processor driver changes for 6.6-rc1: - Support obtaining physical CPU ID from MADT on LoongArch (Bibo Mao). - Convert ACPI CPU initialization to using _OSC instead of _PDC that has been depreceted since 2018 and dropped from the specification in ACPI 6.5 (Michal Wilczynski, Rafael Wysocki). * acpi-processor: ACPI: processor: LoongArch: Get physical ID from MADT ACPI: processor: Refine messages in acpi_early_processor_control_setup() ACPI: processor: Remove acpi_hwp_native_thermal_lvt_osc() ACPI: processor: Use _OSC to convey OSPM processor support information ACPI: processor: Introduce acpi_processor_osc() ACPI: processor: Set CAP_SMP_T_SWCOORD in arch_acpi_set_proc_cap_bits() ACPI: processor: Clear C_C2C3_FFH and C_C1_FFH in arch_acpi_set_proc_cap_bits() ACPI: processor: Rename ACPI_PDC symbols ACPI: processor: Refactor arch_acpi_set_pdc_bits() ACPI: processor: Move processor_physically_present() to acpi_processor.c ACPI: processor: Move MWAIT quirk out of acpi_processor.c