diff options
| author | Alexey Kardashevskiy <aik@ozlabs.ru> | 2022-05-04 17:48:07 +1000 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2023-03-31 11:19:05 -0400 |
| commit | 52882b9c7a761b2b4e44717d6fbd1ed94c601b7f (patch) | |
| tree | 7682e58f5aec1c8bb76519b64ca77ab47076929d /arch/arm64/kvm/arm.c | |
| parent | 85b475a4502d45380c1b9223c01954daa228eeb0 (diff) | |
KVM: PPC: Make KVM_CAP_IRQFD_RESAMPLE platform dependent
When introduced, IRQFD resampling worked on POWER8 with XICS. However
KVM on POWER9 has never implemented it - the compatibility mode code
("XICS-on-XIVE") misses the kvm_notify_acked_irq() call and the native
XIVE mode does not handle INTx in KVM at all.
This moved the capability support advertising to platforms and stops
advertising it on XIVE, i.e. POWER9 and later.
Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru>
Acked-by: Anup Patel <anup@brainfault.org>
Acked-by: Nicholas Piggin <npiggin@gmail.com>
Message-Id: <20220504074807.3616813-1-aik@ozlabs.ru>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'arch/arm64/kvm/arm.c')
| -rw-r--r-- | arch/arm64/kvm/arm.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/arm64/kvm/arm.c b/arch/arm64/kvm/arm.c index 3bd732eaf087..3f6a5efdbcf0 100644 --- a/arch/arm64/kvm/arm.c +++ b/arch/arm64/kvm/arm.c @@ -220,6 +220,7 @@ int kvm_vm_ioctl_check_extension(struct kvm *kvm, long ext) case KVM_CAP_VCPU_ATTRIBUTES: case KVM_CAP_PTP_KVM: case KVM_CAP_ARM_SYSTEM_SUSPEND: + case KVM_CAP_IRQFD_RESAMPLE: r = 1; break; case KVM_CAP_SET_GUEST_DEBUG2: |