x86/cpu/amd: Add a Zenbleed fix
Origin: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable.git/commit?id=
93df00f9d48d48466ddbe01a06eaaf3311ecfb53
Bug-Debian-Security: https://security-tracker.debian.org/tracker/CVE-2023-20593
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: Borislav Petkov (AMD) <bp@alien8.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Gbp-Pq: Topic bugfix/x86
Gbp-Pq: Name x86-cpu-amd-Add-a-Zenbleed-fix.patch
projects / linux.git / commit