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| author | Paolo Bonzini <pbonzini@redhat.com> | 2020-06-08 13:11:47 +0200 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2020-06-08 14:00:57 +0200 |
| commit | fb7333dfd812062d3d51f377e70c1d3a3788472b (patch) | |
| tree | 701379c48f81158a82ed9ece87a500f8ad4681c8 /virt/kvm | |
| parent | KVM: selftests: fix vmx_preemption_timer_test build with GCC10 (diff) | |
| download | linux-fb7333dfd812062d3d51f377e70c1d3a3788472b.tar.xz linux-fb7333dfd812062d3d51f377e70c1d3a3788472b.zip | |
KVM: SVM: fix calls to is_intercept
is_intercept takes an INTERCEPT_* constant, not SVM_EXIT_*; because
of this, the compiler was removing the body of the conditionals,
as if is_intercept returned 0.
This unveils a latent bug: when clearing the VINTR intercept,
int_ctl must also be changed in the L1 VMCB (svm->nested.hsave),
just like the intercept itself is also changed in the L1 VMCB.
Otherwise V_IRQ remains set and, due to the VINTR intercept being clear,
we get a spurious injection of a vector 0 interrupt on the next
L2->L1 vmexit.
Reported-by: Qian Cai <cai@lca.pw>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'virt/kvm')
0 files changed, 0 insertions, 0 deletions