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| author | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2020-07-20 09:39:11 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2020-07-20 09:39:11 +0200 |
| commit | 6f2c6599ba70da7ca9603f8026c4e3cdc273ee02 (patch) | |
| tree | 88228298182133d9522be62c8cb3eecfcb595d49 /arch/arm64/kvm/vgic | |
| parent | ea1be1e59b19017e61aa357d524b743ba5602d3c (diff) | |
| parent | ba47d845d715a010f7b51f6f89bae32845e6acb7 (diff) | |
| download | linux-stable-6f2c6599ba70da7ca9603f8026c4e3cdc273ee02.tar.gz linux-stable-6f2c6599ba70da7ca9603f8026c4e3cdc273ee02.tar.bz2 linux-stable-6f2c6599ba70da7ca9603f8026c4e3cdc273ee02.zip | |
Merge 5.8-rc6 into tty-next
We need the serial/tty fixes in here as well.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'arch/arm64/kvm/vgic')
| -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); |