From: Marc Zyngier <maz@kernel.org>
To: Paolo Bonzini <pbonzini@redhat.com>
Cc: Mark Rutland <mark.rutland@arm.com>,
Gavin Shan <gshan@redhat.com>,
Beata Michalska <beata.michalska@linaro.org>,
kvm@vger.kernel.org, Will Deacon <will@kernel.org>,
kvmarm@lists.cs.columbia.edu, YueHaibing <yuehaibing@huawei.com>,
Steven Price <steven.price@arm.com>,
Zenghui Yu <yuzenghui@huawei.com>,
Haibin Wang <wanghaibin.wang@huawei.com>,
Julien Thierry <julien.thierry.kdev@gmail.com>,
Andrew Jones <drjones@redhat.com>,
Suzuki K Poulose <suzuki.poulose@arm.com>,
Shannon Zhao <shannon.zhao@linux.alibaba.com>,
Eric Auger <eric.auger@redhat.com>,
Russell King <rmk+kernel@armlinux.org.uk>,
Mark Brown <broonie@kernel.org>,
Alexandru Elisei <alexandru.elisei@arm.com>,
linux-arm-kernel@lists.infradead.org,
Christoffer Dall <christoffer.dall@arm.com>,
James Morse <james.morse@arm.com>,
Andrew Murray <andrew.murray@arm.com>
Subject: [PATCH 03/23] KVM: arm/arm64: vgic: Handle GICR_PENDBASER.PTZ filed as RAZ
Date: Thu, 30 Jan 2020 13:25:38 +0000 [thread overview]
Message-ID: <20200130132558.10201-4-maz@kernel.org> (raw)
In-Reply-To: <20200130132558.10201-1-maz@kernel.org>
From: Zenghui Yu <yuzenghui@huawei.com>
Although guest will hardly read and use the PTZ (Pending Table Zero)
bit in GICR_PENDBASER, let us emulate the architecture strictly.
As per IHI 0069E 9.11.30, PTZ field is WO, and reads as 0.
Signed-off-by: Zenghui Yu <yuzenghui@huawei.com>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Reviewed-by: Eric Auger <eric.auger@redhat.com>
Link: https://lore.kernel.org/r/20191220111833.1422-1-yuzenghui@huawei.com
---
virt/kvm/arm/vgic/vgic-mmio-v3.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/virt/kvm/arm/vgic/vgic-mmio-v3.c b/virt/kvm/arm/vgic/vgic-mmio-v3.c
index 7dfd15dbb308..ebc218840fc2 100644
--- a/virt/kvm/arm/vgic/vgic-mmio-v3.c
+++ b/virt/kvm/arm/vgic/vgic-mmio-v3.c
@@ -414,8 +414,11 @@ static unsigned long vgic_mmio_read_pendbase(struct kvm_vcpu *vcpu,
gpa_t addr, unsigned int len)
{
struct vgic_cpu *vgic_cpu = &vcpu->arch.vgic_cpu;
+ u64 value = vgic_cpu->pendbaser;
- return extract_bytes(vgic_cpu->pendbaser, addr & 7, len);
+ value &= ~GICR_PENDBASER_PTZ;
+
+ return extract_bytes(value, addr & 7, len);
}
static void vgic_mmio_write_pendbase(struct kvm_vcpu *vcpu,
--
2.20.1
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next prev parent reply other threads:[~2020-01-30 13:27 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-01-30 13:25 [GIT PULL 00/23] KVM/arm updates for 5.6 Marc Zyngier
2020-01-30 13:25 ` [PATCH 01/23] KVM: arm64: Only sign-extend MMIO up to register width Marc Zyngier
2020-01-30 13:25 ` [PATCH 02/23] KVM: arm/arm64: vgic-its: Fix restoration of unmapped collections Marc Zyngier
2020-01-30 13:25 ` Marc Zyngier [this message]
2020-01-30 13:25 ` [PATCH 04/23] arm64: kvm: Fix IDMAP overlap with HYP VA Marc Zyngier
2020-01-30 13:25 ` [PATCH 05/23] KVM: ARM: Call hyp_cpu_pm_exit at the right place Marc Zyngier
2020-01-30 13:25 ` [PATCH 06/23] KVM: arm: Remove duplicate include Marc Zyngier
2020-01-30 13:25 ` [PATCH 07/23] KVM: arm/arm64: Re-check VMA on detecting a poisoned page Marc Zyngier
2020-01-30 13:25 ` [PATCH 08/23] KVM: arm64: Correct PSTATE on exception entry Marc Zyngier
2020-01-30 13:25 ` [PATCH 09/23] KVM: arm/arm64: Correct CPSR " Marc Zyngier
2020-01-30 13:25 ` [PATCH 10/23] KVM: arm/arm64: Correct AArch32 SPSR " Marc Zyngier
2020-01-30 13:25 ` [PATCH 11/23] KVM: arm/arm64: vgic-its: Properly check the unmapped coll in DISCARD handler Marc Zyngier
2020-01-30 13:25 ` [PATCH 12/23] KVM: arm/arm64: vgic: Drop the kvm_vgic_register_mmio_region() Marc Zyngier
2020-01-30 13:25 ` [PATCH 13/23] KVM: arm/arm64: Cleanup MMIO handling Marc Zyngier
2020-01-30 13:25 ` [PATCH 14/23] arm64: KVM: Add UAPI notes for swapped registers Marc Zyngier
2020-01-30 13:25 ` [PATCH 15/23] arm64: KVM: Annotate guest entry/exit as a single function Marc Zyngier
2020-01-30 13:25 ` [PATCH 16/23] KVM: arm/arm64: Fix young bit from mmu notifier Marc Zyngier
2020-01-30 13:25 ` [PATCH 17/23] KVM: arm: Fix DFSR setting for non-LPAE aarch32 guests Marc Zyngier
2020-01-30 13:25 ` [PATCH 18/23] KVM: arm: Make inject_abt32() inject an external abort instead Marc Zyngier
2020-01-30 13:25 ` [PATCH 19/23] KVM: arm64: pmu: Don't increment SW_INCR if PMCR.E is unset Marc Zyngier
2020-01-30 13:25 ` [PATCH 20/23] KVM: arm64: pmu: Don't mark a counter as chained if the odd one is disabled Marc Zyngier
2020-01-30 13:25 ` [PATCH 21/23] KVM: arm64: pmu: Fix chained SW_INCR counters Marc Zyngier
2020-01-30 13:25 ` [PATCH 22/23] KVM: arm64: pmu: Only handle supported event counters Marc Zyngier
2020-01-30 13:25 ` [PATCH 23/23] KVM: arm64: Treat emulated TVAL TimerValue as a signed 32-bit integer Marc Zyngier
2020-01-30 14:11 ` Alexandru Elisei
2020-01-30 14:15 ` Marc Zyngier
2020-01-30 17:13 ` [GIT PULL 00/23] KVM/arm updates for 5.6 Paolo Bonzini
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