git.baikalelectronics.ru Git - kernel.git/commit

author	Borislav Petkov (AMD) <bp@alien8.de>
	Sat, 7 Oct 2023 10:57:02 +0000 (12:57 +0200)
committer	Greg Kroah-Hartman <gregkh@linuxfoundation.org>
	Thu, 19 Oct 2023 21:08:56 +0000 (23:08 +0200)
commit	125f495fa66a7a42928428d0577aa887990fc365
tree	ce0ef949af3661f77369d657e3559b160c5e962c	tree \| snapshot
parent	3863989497652488a50f00e96de4331e5efabc6c	commit \| diff

x86/cpu: Fix AMD erratum #1485 on Zen4-based CPUs

commit f454b18e07f518bcd0c05af17a2239138bff52de upstream.

Fix erratum #1485 on Zen4 parts where running with STIBP disabled can
cause an #UD exception. The performance impact of the fix is negligible.

Reported-by: René Rebe <rene@exactcode.de>
Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de>
Tested-by: René Rebe <rene@exactcode.de>
Cc: <stable@kernel.org>
Link: https://lore.kernel.org/r/D99589F4-BC5D-430B-87B2-72C20370CF57@exactcode.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

arch/x86/include/asm/msr-index.h		diff \| blob \| history
arch/x86/kernel/cpu/amd.c		diff \| blob \| history