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Johannes Wikner d71cd4c6a9 x86/bugs: Skip RSB fill at VMEXIT 
commit 0fad2878642ec46225af2054564932745ac5c765 upstream.

entry_ibpb() is designed to follow Intel's IBPB specification regardless
of CPU. This includes invalidating RSB entries.

Hence, if IBPB on VMEXIT has been selected, entry_ibpb() as part of the
RET untraining in the VMEXIT path will take care of all BTB and RSB
clearing so there's no need to explicitly fill the RSB anymore.

  [ bp: Massage commit message. ]

Suggested-by: Borislav Petkov <bp@alien8.de>
Signed-off-by: Johannes Wikner <kwikner@ethz.ch>
Cc: <stable@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2024-11-23 23:21:55 +01:00
..
mce x86/mce: Make sure to grab mce_sysfs_mutex in set_bank() 2024-11-19 09:23:10 +01:00
microcode Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
mtrr x86/mtrr: Check if fixed MTRRs exist before saving them 2024-11-23 23:20:30 +01:00
resctrl Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
acrn.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
amd.c x86/CPU/AMD: Update the Zenbleed microcode revisions 2024-11-19 09:22:36 +01:00
aperfmperf.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
bugs.c x86/bugs: Skip RSB fill at VMEXIT 2024-11-23 23:21:55 +01:00
cacheinfo.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
centaur.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
common.c x86/cpufeatures: Add a IBPB_NO_RET BUG flag 2024-11-23 23:21:55 +01:00
cpu.h Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
cpuid-deps.c x86/cpufeatures: Fix dependencies for GFNI, VAES, and VPCLMULQDQ 2024-11-19 11:32:22 +01:00
cyrix.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
feat_ctl.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
hygon.c x86/cpu/hygon: Fix the CPU topology evaluation for real 2024-11-18 11:43:21 +01:00
hypervisor.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
intel.c x86/cpu/intel: Detect TME keyid bits before setting MTRR mask registers 2024-11-18 23:18:30 +01:00
intel_epb.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
intel_pconfig.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
Makefile Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
match.c x86/cpu: Fix x86_match_cpu() to match just X86_VENDOR_INTEL 2024-11-19 14:19:29 +01:00
mkcapflags.sh Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
mshyperv.c x86/hyperv: Set X86_FEATURE_TSC_KNOWN_FREQ when Hyper-V provides frequency 2024-11-23 23:21:15 +01:00
perfctr-watchdog.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
powerflags.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
proc.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
rdrand.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
scattered.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
topology.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
transmeta.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
tsx.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
umc.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
umwait.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
vmware.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
zhaoxin.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00