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| author | Paolo Bonzini <pbonzini@redhat.com> | 2017-12-21 02:49:14 +0300 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2017-12-21 14:59:54 +0300 |
| commit | fae1a3e775cca8c3a9e0eb34443b310871a15a92 (patch) | |
| tree | 19939a12170be0445651ab50b5b65af6970732d2 /tools/kvm | |
| parent | 43aabca38aa9668eee3c3c1206207034614c0901 (diff) | |
| download | linux-fae1a3e775cca8c3a9e0eb34443b310871a15a92.tar.xz | |
kvm: x86: fix RSM when PCID is non-zero
rsm_load_state_64() and rsm_enter_protected_mode() load CR3, then
CR4 & ~PCIDE, then CR0, then CR4.
However, setting CR4.PCIDE fails if CR3[11:0] != 0. It's probably easier
in the long run to replace rsm_enter_protected_mode() with an emulator
callback that sets all the special registers (like KVM_SET_SREGS would
do). For now, set the PCID field of CR3 only after CR4.PCIDE is 1.
Reported-by: Laszlo Ersek <lersek@redhat.com>
Tested-by: Laszlo Ersek <lersek@redhat.com>
Fixes: 660a5d517aaab9187f93854425c4c63f4a09195c
Cc: stable@vger.kernel.org
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'tools/kvm')
0 files changed, 0 insertions, 0 deletions