x86/srso: Add IBPB on VMEXIT

Browse source

Upstream commit: d893832d0e

Add the option to flush IBPB only on VMEXIT in order to protect from
malicious guests but one otherwise trusts the software that runs on the
hypervisor.

Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

...

This commit is contained in:

Borislav Petkov (AMD) 2023-07-07 13:53:41 +02:00 • committed by Greg Kroah-Hartman

parent 948e43310c

commit b31eb84b67

4 changed files with 26 additions and 1 deletions

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

Download patch file Download diff file Expand all files Collapse all files

1

arch/x86/include/asm/cpufeatures.h

View file

19

arch/x86/kernel/cpu/bugs.c

View file

4

arch/x86/kvm/svm/svm.c

View file

3

arch/x86/kvm/svm/vmenter.S

View file