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| author | Shenming Lu <lushenming@huawei.com> | 2020-11-28 22:18:57 +0800 |
|---|---|---|
| committer | Marc Zyngier <maz@kernel.org> | 2020-11-30 11:18:29 +0000 |
| commit | 57e3cebd022fbc035dcf190ac789fd2ffc747f5b (patch) | |
| tree | a566c7a05f60d395cc47e072fdd8e1d600bb535e /include/kvm | |
| parent | bf118a5cb7e6d17e7ec9492e4dc676e7e7b69d01 (diff) | |
| download | linux-stable-57e3cebd022fbc035dcf190ac789fd2ffc747f5b.tar.gz linux-stable-57e3cebd022fbc035dcf190ac789fd2ffc747f5b.tar.bz2 linux-stable-57e3cebd022fbc035dcf190ac789fd2ffc747f5b.zip | |
KVM: arm64: Delay the polling of the GICR_VPENDBASER.Dirty bit
In order to reduce the impact of the VPT parsing happening on the GIC,
we can split the vcpu reseidency in two phases:
- programming GICR_VPENDBASER: this still happens in vcpu_load()
- checking for the VPT parsing to be complete: this can happen
on vcpu entry (in kvm_vgic_flush_hwstate())
This allows the GIC and the CPU to work in parallel, rewmoving some
of the entry overhead.
Suggested-by: Marc Zyngier <maz@kernel.org>
Signed-off-by: Shenming Lu <lushenming@huawei.com>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20201128141857.983-3-lushenming@huawei.com
Diffstat (limited to 'include/kvm')
| -rw-r--r-- | include/kvm/arm_vgic.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/kvm/arm_vgic.h b/include/kvm/arm_vgic.h index a8d8fdcd3723..3d74f1060bd1 100644 --- a/include/kvm/arm_vgic.h +++ b/include/kvm/arm_vgic.h @@ -402,6 +402,7 @@ int kvm_vgic_v4_unset_forwarding(struct kvm *kvm, int irq, struct kvm_kernel_irq_routing_entry *irq_entry); int vgic_v4_load(struct kvm_vcpu *vcpu); +void vgic_v4_commit(struct kvm_vcpu *vcpu); int vgic_v4_put(struct kvm_vcpu *vcpu, bool need_db); #endif /* __KVM_ARM_VGIC_H */ |