diff options
| author | Jim Mattson <jmattson@google.com> | 2018-10-17 00:29:22 +0300 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2018-10-17 20:07:43 +0300 |
| commit | da998b46d244767505e41d050dcac5e4d03ba96f (patch) | |
| tree | 8e719071b6732577b306b04dfb6fe886a244e51f /Documentation/virtual | |
| parent | 91e86d225ef3da80d33a8fd7695316c31c0810c9 (diff) | |
| download | linux-da998b46d244767505e41d050dcac5e4d03ba96f.tar.xz | |
kvm: x86: Defer setting of CR2 until #PF delivery
When exception payloads are enabled by userspace (which is not yet
possible) and a #PF is raised in L2, defer the setting of CR2 until
the #PF is delivered. This allows the L1 hypervisor to intercept the
fault before CR2 is modified.
For backwards compatibility, when exception payloads are not enabled
by userspace, kvm_multiple_exception modifies CR2 when the #PF
exception is raised.
Reported-by: Jim Mattson <jmattson@google.com>
Suggested-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Jim Mattson <jmattson@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'Documentation/virtual')
0 files changed, 0 insertions, 0 deletions