KVM: x86: WARN if MOV DR emulation hits a "too late" #GP

Browse source

WARN if ->set_dr() => kvm_set_dr() fails when emulating a MOV DR write,
as the emulator _must_ pre-check for #GPs in order to get the event
priority right when emulating MOV DR for L2 on SVM (all exceptions have
higher priority than the instruction intercept).

Opportunistically update the comment as the blurb about "#UD" being
checked is incomplete and misleading.

Reviewed-by: Jim Mattson <jmattson@google.com>
Link: https://patch.msgid.link/20260612230113.684301-8-seanjc@google.com
Signed-off-by: Sean Christopherson <seanjc@google.com>

...

This commit is contained in:

Sean Christopherson 2026-06-12 16:01:12 -07:00

parent 1f077338d1

commit b077cfed52

1 changed files with 6 additions and 2 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

8

arch/x86/kvm/emulate.c

View file