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| author |   Paolo Bonzini <pbonzini@redhat.com> | 2021-04-08 08:10:25 -0400 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2021-04-17 08:30:52 -0400 |
| commit | 4a38162ee9f10f5f67c36f4f5aa4f6be2657efd5 (patch) | |
| tree | cc03d02c0620fc31aff035d188c891e7175b98b2 /arch/x86/kvm/svm/nested.c | |
| parent | Merge remote-tracking branch 'tip/x86/sgx' into kvm-next (diff) | |
| download | wireguard-linux-4a38162ee9f10f5f67c36f4f5aa4f6be2657efd5.tar.xz wireguard-linux-4a38162ee9f10f5f67c36f4f5aa4f6be2657efd5.zip | |
KVM: MMU: load PDPTRs outside mmu_lock
On SVM, reading PDPTRs might access guest memory, which might fault
and thus might sleep. On the other hand, it is not possible to
release the lock after make_mmu_pages_available has been called.
Therefore, push the call to make_mmu_pages_available and the
mmu_lock critical section within mmu_alloc_direct_roots and
mmu_alloc_shadow_roots.
Reported-by: Wanpeng Li <wanpengli@tencent.com>
Co-developed-by: Sean Christopherson <seanjc@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'arch/x86/kvm/svm/nested.c')
0 files changed, 0 insertions, 0 deletions