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authorLinus Torvalds <torvalds@linux-foundation.org>2024-03-12 20:14:22 +0300
committerLinus Torvalds <torvalds@linux-foundation.org>2024-03-12 20:14:22 +0300
commit691632f0e86973604678d193ccfa47b9614581aa (patch)
tree8e5bf2e2a50c5564d28d31f431c443b28042bc9e /drivers/s390/cio/scm.c
parentb29f377119f68b942369a9366bdcb1fec82b2cda (diff)
parentfa9e3139e6c5ac756e1ab2a6c7eca99eb684a2fe (diff)
downloadlinux-691632f0e86973604678d193ccfa47b9614581aa.tar.xz
Merge tag 's390-6.9-1' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux
Pull s390 updates from Heiko Carstens: - Various virtual vs physical address usage fixes - Fix error handling in Processor Activity Instrumentation device driver, and export number of counters with a sysfs file - Allow for multiple events when Processor Activity Instrumentation counters are monitored in system wide sampling - Change multiplier and shift values of the Time-of-Day clock source to improve steering precision - Remove a couple of unneeded GFP_DMA flags from allocations - Disable mmap alignment if randomize_va_space is also disabled, to avoid a too small heap - Various changes to allow s390 to be compiled with LLVM=1, since ld.lld and llvm-objcopy will have proper s390 support witch clang 19 - Add __uninitialized macro to Compiler Attributes. This is helpful with s390's FPU code where some users have up to 520 byte stack frames. Clearing such stack frames (if INIT_STACK_ALL_PATTERN or INIT_STACK_ALL_ZERO is enabled) before they are used contradicts the intention (performance improvement) of such code sections. - Convert switch_to() to an out-of-line function, and use the generic switch_to header file - Replace the usage of s390's debug feature with pr_debug() calls within the zcrypt device driver - Improve hotplug support of the Adjunct Processor device driver - Improve retry handling in the zcrypt device driver - Various changes to the in-kernel FPU code: - Make in-kernel FPU sections preemptible - Convert various larger inline assemblies and assembler files to C, mainly by using singe instruction inline assemblies. This increases readability, but also allows makes it easier to add proper instrumentation hooks - Cleanup of the header files - Provide fast variants of csum_partial() and csum_partial_copy_nocheck() based on vector instructions - Introduce and use a lock to synchronize accesses to zpci device data structures to avoid inconsistent states caused by concurrent accesses - Compile the kernel without -fPIE. This addresses the following problems if the kernel is compiled with -fPIE: - It uses dynamic symbols (.dynsym), for which the linker refuses to allow more than 64k sections. This can break features which use '-ffunction-sections' and '-fdata-sections', including kpatch-build and function granular KASLR - It unnecessarily uses GOT relocations, adding an extra layer of indirection for many memory accesses - Fix shared_cpu_list for CPU private L2 caches, which incorrectly were reported as globally shared * tag 's390-6.9-1' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux: (117 commits) s390/tools: handle rela R_390_GOTPCDBL/R_390_GOTOFF64 s390/cache: prevent rebuild of shared_cpu_list s390/crypto: remove retry loop with sleep from PAES pkey invocation s390/pkey: improve pkey retry behavior s390/zcrypt: improve zcrypt retry behavior s390/zcrypt: introduce retries on in-kernel send CPRB functions s390/ap: introduce mutex to lock the AP bus scan s390/ap: rework ap_scan_bus() to return true on config change s390/ap: clarify AP scan bus related functions and variables s390/ap: rearm APQNs bindings complete completion s390/configs: increase number of LOCKDEP_BITS s390/vfio-ap: handle hardware checkstop state on queue reset operation s390/pai: change sampling event assignment for PMU device driver s390/boot: fix minor comment style damages s390/boot: do not check for zero-termination relocation entry s390/boot: make type of __vmlinux_relocs_64_start|end consistent s390/boot: sanitize kaslr_adjust_relocs() function prototype s390/boot: simplify GOT handling s390: vmlinux.lds.S: fix .got.plt assertion s390/boot: workaround current 'llvm-objdump -t -j ...' behavior ...
Diffstat (limited to 'drivers/s390/cio/scm.c')
-rw-r--r--drivers/s390/cio/scm.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/s390/cio/scm.c b/drivers/s390/cio/scm.c
index 6b21ba68c1fe..c7894d61306d 100644
--- a/drivers/s390/cio/scm.c
+++ b/drivers/s390/cio/scm.c
@@ -42,7 +42,7 @@ static int scmdev_uevent(const struct device *dev, struct kobj_uevent_env *env)
return add_uevent_var(env, "MODALIAS=scm:scmdev");
}
-static struct bus_type scm_bus_type = {
+static const struct bus_type scm_bus_type = {
.name = "scm",
.probe = scmdev_probe,
.remove = scmdev_remove,
@@ -228,7 +228,7 @@ int scm_update_information(void)
size_t num;
int ret;
- scm_info = (void *)__get_free_page(GFP_KERNEL | GFP_DMA);
+ scm_info = (void *)__get_free_page(GFP_KERNEL);
if (!scm_info)
return -ENOMEM;