diff options
| author | Jan Kiszka <jan.kiszka@siemens.com> | 2011-10-18 18:23:11 +0200 |
|---|---|---|
| committer | Avi Kivity <avi@redhat.com> | 2011-10-30 12:24:10 +0200 |
| commit | f1c1da2bde712812a3e0f9a7a7ebe7a916a4b5f4 (patch) | |
| tree | db3715f38fd012cece847d0f0918cbc12eb2123f /Documentation | |
| parent | 7697e71f72b45a1bd0abe70918c383100fcc8514 (diff) | |
| download | linux-f1c1da2bde712812a3e0f9a7a7ebe7a916a4b5f4.tar.gz | |
KVM: SVM: Keep intercepting task switching with NPT enabled
AMD processors apparently have a bug in the hardware task switching support when NPT is enabled. If the task switch triggers a NPF, we can get wrong EXITINTINFO along with that fault. On resume, spurious exceptions may then be injected into the guest. We were able to reproduce this bug when our guest triggered #SS and the handler were supposed to run over a separate task with not yet touched stack pages. Work around the issue by continuing to emulate task switches even in NPT mode. Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
Diffstat (limited to 'Documentation')
0 files changed, 0 insertions, 0 deletions