From: Suravee Suthikulpanit suravee.suthikulpanit@amd.com
commit 637543a8d61c6afe4e9be64bfb43c78701a83375 upstream.
Current logic incorrectly uses the enum ioapic_irq_destination_types to check the posted interrupt destination types. However, the value was set using APIC_DM_XXX macros, which are left-shifted by 8 bits.
Fixes by using the APIC_DM_FIXED and APIC_DM_LOWEST instead.
Fixes: (fdcf75621375 'KVM: x86: Disable posted interrupts for non-standard IRQs delivery modes') Cc: Alexander Graf graf@amazon.com Signed-off-by: Suravee Suthikulpanit suravee.suthikulpanit@amd.com Message-Id: 1586239989-58305-1-git-send-email-suravee.suthikulpanit@amd.com Reviewed-by: Maxim Levitsky mlevitsk@redhat.com Tested-by: Maxim Levitsky mlevitsk@redhat.com Signed-off-by: Paolo Bonzini pbonzini@redhat.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org
--- arch/x86/include/asm/kvm_host.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)
--- a/arch/x86/include/asm/kvm_host.h +++ b/arch/x86/include/asm/kvm_host.h @@ -1664,8 +1664,8 @@ void kvm_set_msi_irq(struct kvm *kvm, st static inline bool kvm_irq_is_postable(struct kvm_lapic_irq *irq) { /* We can only post Fixed and LowPrio IRQs */ - return (irq->delivery_mode == dest_Fixed || - irq->delivery_mode == dest_LowestPrio); + return (irq->delivery_mode == APIC_DM_FIXED || + irq->delivery_mode == APIC_DM_LOWEST); }
static inline void kvm_arch_vcpu_blocking(struct kvm_vcpu *vcpu)