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KVM: arm/arm64: Fix broken GICH_ELRSR big endian conversion 

We are incorrectly rearranging 32-bit words inside a 64-bit typed value
for big endian systems, which would result in never marking a virtual
interrupt as inactive on big endian systems (assuming 32 or fewer LRs on
the hardware).  Fix this by not doing any word order manipulation for
the typed values.

Cc: <stable@vger.kernel.org>
Acked-by: Christoffer Dall <christoffer.dall@linaro.org>
Signed-off-by: Christoffer Dall <christoffer.dall@linaro.org>
This commit is contained in:
Christoffer Dall 2017-12-03 23:54:41 +01:00
parent 6b2ad81bcf
commit fc396e0663
1 changed files with 0 additions and 4 deletions
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4
virt/kvm/arm/hyp/vgic-v2-sr.c
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@ -34,11 +34,7 @@ static void __hyp_text save_elrsr(struct kvm_vcpu *vcpu, void __iomem *base)
else else
elrsr1 = 0; elrsr1 = 0;
#ifdef CONFIG_CPU_BIG_ENDIAN
cpu_if->vgic_elrsr = ((u64)elrsr0 << 32) | elrsr1;
#else
cpu_if->vgic_elrsr = ((u64)elrsr1 << 32) | elrsr0; cpu_if->vgic_elrsr = ((u64)elrsr1 << 32) | elrsr0;
#endif
} }
static void __hyp_text save_lrs(struct kvm_vcpu *vcpu, void __iomem *base) static void __hyp_text save_lrs(struct kvm_vcpu *vcpu, void __iomem *base)