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| author | Alexey Kardashevskiy <aik@ozlabs.ru> | 2022-05-04 10:48:07 +0300 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2023-03-31 18:19:05 +0300 |
| commit | 52882b9c7a761b2b4e44717d6fbd1ed94c601b7f (patch) | |
| tree | 7682e58f5aec1c8bb76519b64ca77ab47076929d /arch/x86/kvm/x86.c | |
| parent | 85b475a4502d45380c1b9223c01954daa228eeb0 (diff) | |
| download | linux-52882b9c7a761b2b4e44717d6fbd1ed94c601b7f.tar.xz | |
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/x86/kvm/x86.c')
| -rw-r--r-- | arch/x86/kvm/x86.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c index 7d6f98b7635f..3d852ce84920 100644 --- a/arch/x86/kvm/x86.c +++ b/arch/x86/kvm/x86.c @@ -4432,6 +4432,7 @@ int kvm_vm_ioctl_check_extension(struct kvm *kvm, long ext) case KVM_CAP_VAPIC: case KVM_CAP_ENABLE_CAP: case KVM_CAP_VM_DISABLE_NX_HUGE_PAGES: + case KVM_CAP_IRQFD_RESAMPLE: r = 1; break; case KVM_CAP_EXIT_HYPERCALL: |