linux/arch/x86
Linus Torvalds 3c9de67dd3 Miscellaneous fixes:
- Fix CPU topology related regression that limited
    Xen PV guests to a single CPU
 
  - Fix ancient e820__register_nosave_regions() bugs that
    were causing problems with kexec's artificial memory
    maps
 
  - Fix an S4 hibernation crash caused by two missing ENDBR's that
    were mistakenly removed in a recent commit
 
  - Fix a resctrl serialization bug
 
  - Fix early_printk documentation and comments
 
  - Fix RSB bugs, combined with preparatory updates to better
    match the code to vendor recommendations.
 
  - Add RSB mitigation document
 
  - Fix/update documentation
 
  - Fix the erratum_1386_microcode[] table to be NULL terminated
 
 Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Merge tag 'x86-urgent-2025-04-10' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull misc x86 fixes from Ingo Molnar:

 - Fix CPU topology related regression that limited Xen PV guests to a
   single CPU

 - Fix ancient e820__register_nosave_regions() bugs that were causing
   problems with kexec's artificial memory maps

 - Fix an S4 hibernation crash caused by two missing ENDBR's that were
   mistakenly removed in a recent commit

 - Fix a resctrl serialization bug

 - Fix early_printk documentation and comments

 - Fix RSB bugs, combined with preparatory updates to better match the
   code to vendor recommendations.

 - Add RSB mitigation document

 - Fix/update documentation

 - Fix the erratum_1386_microcode[] table to be NULL terminated

* tag 'x86-urgent-2025-04-10' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/ibt: Fix hibernate
  x86/cpu: Avoid running off the end of an AMD erratum table
  Documentation/x86: Zap the subsection letters
  Documentation/x86: Update the naming of CPU features for /proc/cpuinfo
  x86/bugs: Add RSB mitigation document
  x86/bugs: Don't fill RSB on context switch with eIBRS
  x86/bugs: Don't fill RSB on VMEXIT with eIBRS+retpoline
  x86/bugs: Fix RSB clearing in indirect_branch_prediction_barrier()
  x86/bugs: Use SBPB in write_ibpb() if applicable
  x86/bugs: Rename entry_ibpb() to write_ibpb()
  x86/early_printk: Use 'mmio32' for consistency, fix comments
  x86/resctrl: Fix rdtgroup_mkdir()'s unlocked use of kernfs_node::name
  x86/e820: Fix handling of subpage regions when calculating nosave ranges in e820__register_nosave_regions()
  x86/acpi: Don't limit CPUs to 1 for Xen PV guests due to disabled ACPI
2025-04-10 15:20:10 -07:00
..
boot Kbuild updates for v6.15 2025-04-05 15:46:50 -07:00
coco x86/tdx: Emit warning if IRQs are enabled during HLT #VE handling 2025-03-26 08:52:10 +01:00
configs x86/mm: Remove CONFIG_HIGHMEM64G support 2025-02-27 11:21:53 +01:00
crypto This update includes the following changes: 2025-03-29 10:01:55 -07:00
entry x86/bugs: Use SBPB in write_ibpb() if applicable 2025-04-09 12:41:30 +02:00
events lsm/stable-6.15 PR 20250323 2025-03-25 15:44:19 -07:00
hyperv hyperv-next for 6.15 2025-03-25 14:47:04 -07:00
ia32 x86/signal/32: Merge native and compat 32-bit signal code 2022-10-19 09:58:49 +02:00
include Miscellaneous fixes: 2025-04-10 15:20:10 -07:00
kernel x86/cpu: Avoid running off the end of an AMD erratum table 2025-04-09 07:57:16 -07:00
kvm ARM: 2025-04-08 13:47:55 -07:00
lib x86/uaccess: Improve performance by aligning writes to 8 bytes in copy_user_generic(), on non-FSRM/ERMS CPUs 2025-03-28 22:57:44 +01:00
math-emu x86/headers: Replace __ASSEMBLY__ with __ASSEMBLER__ in non-UAPI headers 2025-03-19 11:47:30 +01:00
mm x86/bugs: Don't fill RSB on context switch with eIBRS 2025-04-09 12:42:09 +02:00
net bpf-next-6.15 2025-03-30 12:43:03 -07:00
pci xen: branch for v6.15-rc1 2025-03-25 14:33:32 -07:00
platform x86/platform/iosf_mbi: Remove unused iosf_mbi_unregister_pmic_bus_access_notifier() 2025-04-01 20:31:39 +02:00
power x86/ibt: Fix hibernate 2025-04-09 21:29:11 +02:00
purgatory Kbuild updates for v6.10 2024-05-18 12:39:20 -07:00
ras
realmode x86/headers: Replace __ASSEMBLY__ with __ASSEMBLER__ in non-UAPI headers 2025-03-19 11:47:30 +01:00
tools x86/tools: Drop duplicate unlikely() definition in insn_decoder_test.c 2025-03-28 22:57:44 +01:00
um um: x86: clean up elf specific definitions 2025-03-18 14:48:31 +01:00
video arch: Fix name collision with ACPI's video.o 2024-05-20 21:17:06 +00:00
virt x86/kexec: Export e820_table_kexec[] to sysfs 2025-02-22 12:44:45 +01:00
xen Miscellaneous objtool fixes: 2025-04-10 14:27:32 -07:00
.gitignore
Kbuild tracing: Disable branch profiling in noinstr code 2025-03-22 09:49:26 +01:00
Kconfig Kbuild updates for v6.15 2025-04-05 15:46:50 -07:00
Kconfig.assembler x86/kconfig: Add as-instr64 macro to properly evaluate AS_WRUSS 2024-06-20 19:48:18 +02:00
Kconfig.cpu x86/mm: Add INVLPGB feature and Kconfig entry 2025-03-19 11:08:52 +01:00
Kconfig.cpufeatures x86/cpufeatures: Add {REQUIRED,DISABLED} feature configs 2025-03-19 11:15:11 +01:00
Kconfig.debug mm: rename GENERIC_PTDUMP and PTDUMP_CORE 2025-03-17 00:05:32 -07:00
Makefile Kbuild updates for v6.15 2025-04-05 15:46:50 -07:00
Makefile.um um: Pass the correct Rust target and options with gcc 2025-03-18 11:01:02 +01:00
Makefile_32.cpu x86/cpu: Drop configuration options for early 64-bit CPUs 2025-02-27 11:19:06 +01:00