Paolo Bonzini de7cd3f676 KVM: x86: check for interrupts before deciding whether to exit the fast path
The kvm_x86_sync_pir_to_irr callback can sometimes set KVM_REQ_EVENT.
If that happens exactly at the time that an exit is handled as
EXIT_FASTPATH_REENTER_GUEST, vcpu_enter_guest will go incorrectly
through the loop that calls kvm_x86_run, instead of processing
the request promptly.

Fixes: 379a3c8ee444 ("KVM: VMX: Optimize posted-interrupt delivery for timer fastpath")
Cc: stable@vger.kernel.org
Reviewed-by: Sean Christopherson <seanjc@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2021-10-21 03:35:41 -04:00
..
2021-10-15 04:47:55 -04:00
2021-09-17 11:54:48 -07:00
2021-09-05 11:50:41 -07:00