x86/CPU/AMD: Prevent improper isolation of shared resources in Zen2's op cache

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commit c21b90f776 upstream.

Make sure resources are not improperly shared in the op cache and
cause instruction corruption this way.

Signed-off-by: Prathyushi Nangia <prathyushi.nangia@amd.com>
Co-developed-by: Borislav Petkov (AMD) <bp@alien8.de>
Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de>
Cc: stable@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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Prathyushi Nangia 2025-12-09 10:01:33 -06:00 • committed by Greg Kroah-Hartman

parent 48b4a4c96e

commit f5bc3aef7d

3 changed files with 7 additions and 0 deletions

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1

arch/x86/include/asm/msr-index.h

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3

arch/x86/kernel/cpu/amd.c

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3

tools/arch/x86/include/asm/msr-index.h

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