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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2020-07-06 22:48:04 +0300 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2020-07-06 22:48:04 +0300 |
| commit | bfe91da29bfad9941d5d703d45e29f0812a20724 (patch) | |
| tree | e5f04b57e30de099ada784d05c7beefa4b678418 /arch/arm64/kvm/vgic/vgic-v4.c | |
| parent | 5c82ec00dd00c7a2b02d4b42cf59ae87592cb75f (diff) | |
| parent | 8038a922cf9af5266eaff29ce996a0d1b788fc0d (diff) | |
| download | linux-bfe91da29bfad9941d5d703d45e29f0812a20724.tar.xz | |
Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm
Pull kvm fixes from Paolo Bonzini:
"Bugfixes and a one-liner patch to silence a sparse warning"
* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm:
KVM: arm64: Stop clobbering x0 for HVC_SOFT_RESTART
KVM: arm64: PMU: Fix per-CPU access in preemptible context
KVM: VMX: Use KVM_POSSIBLE_CR*_GUEST_BITS to initialize guest/host masks
KVM: x86: Mark CR4.TSD as being possibly owned by the guest
KVM: x86: Inject #GP if guest attempts to toggle CR4.LA57 in 64-bit mode
kvm: use more precise cast and do not drop __user
KVM: x86: bit 8 of non-leaf PDPEs is not reserved
KVM: X86: Fix async pf caused null-ptr-deref
KVM: arm64: vgic-v4: Plug race between non-residency and v4.1 doorbell
KVM: arm64: pvtime: Ensure task delay accounting is enabled
KVM: arm64: Fix kvm_reset_vcpu() return code being incorrect with SVE
KVM: arm64: Annotate hyp NMI-related functions as __always_inline
KVM: s390: reduce number of IO pins to 1
Diffstat (limited to 'arch/arm64/kvm/vgic/vgic-v4.c')
| -rw-r--r-- | arch/arm64/kvm/vgic/vgic-v4.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/arch/arm64/kvm/vgic/vgic-v4.c b/arch/arm64/kvm/vgic/vgic-v4.c index 27ac833e5ec7..b5fa73c9fd35 100644 --- a/arch/arm64/kvm/vgic/vgic-v4.c +++ b/arch/arm64/kvm/vgic/vgic-v4.c @@ -90,7 +90,15 @@ static irqreturn_t vgic_v4_doorbell_handler(int irq, void *info) !irqd_irq_disabled(&irq_to_desc(irq)->irq_data)) disable_irq_nosync(irq); + /* + * The v4.1 doorbell can fire concurrently with the vPE being + * made non-resident. Ensure we only update pending_last + * *after* the non-residency sequence has completed. + */ + raw_spin_lock(&vcpu->arch.vgic_cpu.vgic_v3.its_vpe.vpe_lock); vcpu->arch.vgic_cpu.vgic_v3.its_vpe.pending_last = true; + raw_spin_unlock(&vcpu->arch.vgic_cpu.vgic_v3.its_vpe.vpe_lock); + kvm_make_request(KVM_REQ_IRQ_PENDING, vcpu); kvm_vcpu_kick(vcpu); |