KVM: x86: Mark vmcs12 pages as dirty if and only if they're mapped

Browse source

Mark vmcs12 pages as dirty (in KVM's dirty log bitmap) if and only if the
page is mapped, i.e. if the page is actually "active" in vmcs02.  For some
pages, KVM simply disables the associated VMCS control if the vmcs12 page
is unreachable, i.e. it's possible for nested VM-Enter to succeed with a
"bad" vmcs12 page.

Link: https://patch.msgid.link/20251121223444.355422-3-seanjc@google.com
Signed-off-by: Sean Christopherson <seanjc@google.com>

...

This commit is contained in:

Sean Christopherson 2025-11-21 14:34:41 -08:00

parent 44da6629d2

commit 70b02809de

2 changed files with 11 additions and 13 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

15

arch/x86/kvm/vmx/nested.c

View file

9

include/linux/kvm_host.h

View file