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| author | Sheng Yang | 2009-04-02 04:28:37 +0200 |
|---|---|---|
| committer | Avi Kivity | 2009-06-10 10:48:38 +0200 |
| commit | 4c26b4cd6ff6c3f7534f2aea9615a561c372ed05 (patch) | |
| tree | 26d323229110f29b32606a0b093aaa91437430c9 /virt/kvm | |
| parent | KVM: Fix unneeded instruction skipping during task switching. (diff) | |
| download | kernel-qcow2-linux-4c26b4cd6ff6c3f7534f2aea9615a561c372ed05.tar.gz kernel-qcow2-linux-4c26b4cd6ff6c3f7534f2aea9615a561c372ed05.tar.xz kernel-qcow2-linux-4c26b4cd6ff6c3f7534f2aea9615a561c372ed05.zip | |
KVM: MMU: Discard reserved bits checking on PDE bit 7-8
1. It's related to a Linux kernel bug which fixed by Ingo on
07a66d7c53a538e1a9759954a82bb6c07365eff9. The original code exists for quite a
long time, and it would convert a PDE for large page into a normal PDE. But it
fail to fit normal PDE well. With the code before Ingo's fix, the kernel would
fall reserved bit checking with bit 8 - the remaining global bit of PTE. So the
kernel would receive a double-fault.
2. After discussion, we decide to discard PDE bit 7-8 reserved checking for now.
For this marked as reserved in SDM, but didn't checked by the processor in
fact...
Signed-off-by: Sheng Yang <sheng@linux.intel.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
Diffstat (limited to 'virt/kvm')
0 files changed, 0 insertions, 0 deletions