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kernel_samsung_a53x/arch/x86/kernel/cpu
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Johannes Wikner 7550b4d26a x86/bugs: Do not use UNTRAIN_RET with IBPB on entry 
commit c62fa117c32bd1abed9304c58e0da6940f8c7fc2 upstream.

Since X86_FEATURE_ENTRY_IBPB will invalidate all harmful predictions
with IBPB, no software-based untraining of returns is needed anymore.
Currently, this change affects retbleed and SRSO mitigations so if
either of the mitigations is doing IBPB and the other one does the
software sequence, the latter is not needed 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: Do not use UNTRAIN_RET with IBPB on entry 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