stable inclusion
from stable-v5.10.187
commit 93df00f9d48d48466ddbe01a06eaaf3311ecfb53
category: bugfix
bugzilla: https://gitee.com/src-openeuler/kernel/issues/I7NLYY
CVE: CVE-2023-20593

Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=93df00f9d48d48466ddbe01a06eaaf3311ecfb53

--------------------------------

Upstream commit: 522b1d69219d8f083173819fde04f994aa051a98

Add a fix for the Zen2 VZEROUPPER data corruption bug where under
certain circumstances executing VZEROUPPER can cause register
corruption or leak data.

The optimal fix is through microcode but in the case the proper
microcode revision has not been applied, enable a fallback fix using
a chicken bit.
Signed-off-by: NBorislav Petkov (AMD) <bp@alien8.de>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

 Conflicts:
	arch/x86/include/asm/microcode_amd.h
	arch/x86/kernel/cpu/common.c
Signed-off-by: NYu Liao <liaoyu15@huawei.com>