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authorArd Biesheuvel <ard.biesheuvel@linaro.org>2014-09-17 14:56:18 -0700
committerChristoffer Dall <christoffer.dall@linaro.org>2014-10-10 13:07:37 +0200
commitc40f2f8ff833eddc02cb599ef6e5a162223449ba (patch)
treea2ec51729aae4cc741dca4c264a723362b32db14 /virt
parent37b544087ef3f65ca68465ba39291a07195dac26 (diff)
downloadlinux-c40f2f8ff833eddc02cb599ef6e5a162223449ba.tar.gz
arm/arm64: KVM: add 'writable' parameter to kvm_phys_addr_ioremap
Add support for read-only MMIO passthrough mappings by adding a 'writable' parameter to kvm_phys_addr_ioremap. For the moment, mappings will be read-write even if 'writable' is false, but once the definition of PAGE_S2_DEVICE gets changed, those mappings will be created read-only. Acked-by: Marc Zyngier <marc.zyngier@arm.com> Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> Signed-off-by: Christoffer Dall <christoffer.dall@linaro.org>
Diffstat (limited to 'virt')
-rw-r--r--virt/kvm/arm/vgic.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/virt/kvm/arm/vgic.c b/virt/kvm/arm/vgic.c
index 862967852d5..382fb5a88b9 100644
--- a/virt/kvm/arm/vgic.c
+++ b/virt/kvm/arm/vgic.c
@@ -1899,7 +1899,8 @@ int kvm_vgic_init(struct kvm *kvm)
}
ret = kvm_phys_addr_ioremap(kvm, kvm->arch.vgic.vgic_cpu_base,
- vgic->vcpu_base, KVM_VGIC_V2_CPU_SIZE);
+ vgic->vcpu_base, KVM_VGIC_V2_CPU_SIZE,
+ true);
if (ret) {
kvm_err("Unable to remap VGIC CPU to VCPU\n");
goto out;