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Linus Torvalds 0e33cf955f * Mitigate RFDS vulnerability 
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Merge tag 'rfds-for-linus-2024-03-11' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull x86 RFDS mitigation from Dave Hansen:
 "RFDS is a CPU vulnerability that may allow a malicious userspace to
  infer stale register values from kernel space. Kernel registers can
  have all kinds of secrets in them so the mitigation is basically to
  wait until the kernel is about to return to userspace and has user
  values in the registers. At that point there is little chance of
  kernel secrets ending up in the registers and the microarchitectural
  state can be cleared.

  This leverages some recent robustness fixes for the existing MDS
  vulnerability. Both MDS and RFDS use the VERW instruction for
  mitigation"

* tag 'rfds-for-linus-2024-03-11' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  KVM/x86: Export RFDS_NO and RFDS_CLEAR to guests
  x86/rfds: Mitigate Register File Data Sampling (RFDS)
  Documentation/hw-vuln: Add documentation for RFDS
  x86/mmio: Disable KVM mitigation when X86_FEATURE_CLEAR_CPU_BUF is set
2024-03-12 09:31:39 -07:00
..
alpha smp: Consolidate smp_prepare_boot_cpu() 2024-03-04 12:01:54 +01:00
arc smp: Consolidate smp_prepare_boot_cpu() 2024-03-04 12:01:54 +01:00
arm A large set of updates and features for timers and timekeeping: 2024-03-11 14:38:26 -07:00
arm64 A large set of updates and features for timers and timekeeping: 2024-03-11 14:38:26 -07:00
csky Misc cleanups, including a large series from Thomas Gleixner to 2024-03-11 19:37:56 -07:00
hexagon smp: Consolidate smp_prepare_boot_cpu() 2024-03-04 12:01:54 +01:00
loongarch A large set of updates and features for timers and timekeeping: 2024-03-11 14:38:26 -07:00
m68k for-6.9/block-20240310 2024-03-11 11:43:44 -07:00
microblaze Microblaze patches for 6.8-rc1 2024-01-17 11:27:23 -08:00
mips MIPS: vdso: Use generic union vdso_data_store 2024-02-20 20:56:01 +01:00
nios2 percpu: 2024-01-18 15:01:28 -08:00
openrisc smp: Consolidate smp_prepare_boot_cpu() 2024-03-04 12:01:54 +01:00
parisc parisc architecture fixes for kernel v6.8-rc6: 2024-02-23 10:40:20 -08:00
powerpc Scheduler changes for v6.9: 2024-03-11 18:45:16 -07:00
riscv Misc cleanups, including a large series from Thomas Gleixner to 2024-03-11 19:37:56 -07:00
s390 A large set of updates and features for timers and timekeeping: 2024-03-11 14:38:26 -07:00
sh sh updates for v6.8 2024-01-20 09:24:06 -08:00
sparc smp: Consolidate smp_prepare_boot_cpu() 2024-03-04 12:01:54 +01:00
um for-6.9/block-20240310 2024-03-11 11:43:44 -07:00
x86 * Mitigate RFDS vulnerability 2024-03-12 09:31:39 -07:00
xtensa for-6.9/block-20240310 2024-03-11 11:43:44 -07:00
.gitignore
Kconfig scs: add CONFIG_MMU dependency for vfree_atomic() 2024-01-25 23:52:21 -08:00