Commit Graph

2 Commits

Author SHA1 Message Date
Paolo Bonzini
45981dedf5 KVM: VMX: pass correct DR6 for GD userspace exit
When KVM_EXIT_DEBUG is raised for the disabled-breakpoints case (DR7.GD),
DR6 was incorrectly copied from the value in the VM.  Instead,
DR6.BD should be set in order to catch this case.

On AMD this does not need any special code because the processor triggers
a #DB exception that is intercepted.  However, the testcase would fail
without the previous patch because both DR6.BS and DR6.BD would be set.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2020-05-08 07:44:31 -04:00
Peter Xu
449aa906e6 KVM: selftests: Add KVM_SET_GUEST_DEBUG test
Covers fundamental tests for KVM_SET_GUEST_DEBUG. It is very close to the debug
test in kvm-unit-test, but doing it from outside the guest.

Signed-off-by: Peter Xu <peterx@redhat.com>
Message-Id: <20200505205000.188252-4-peterx@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2020-05-07 06:13:42 -04:00