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authorChristoffer Dall <christoffer.dall@linaro.org>2017-12-27 22:01:52 +0300
committerMarc Zyngier <marc.zyngier@arm.com>2018-03-19 13:53:17 +0300
commit00536ec476601a60d976eebf6aeb9633d4fb37d9 (patch)
tree97e75b07520e9f3b444a6d535ec9d41e797776cc /virt
parentd47533dab9f50eeb7289a38035c39c9eadb1e048 (diff)
downloadlinux-00536ec476601a60d976eebf6aeb9633d4fb37d9.tar.xz
KVM: arm/arm64: Prepare to handle deferred save/restore of SPSR_EL1
SPSR_EL1 is not used by a VHE host kernel and can be deferred, but we need to rework the accesses to this register to access the latest value depending on whether or not guest system registers are loaded on the CPU or only reside in memory. The handling of accessing the various banked SPSRs for 32-bit VMs is a bit clunky, but this will be improved in following patches which will first prepare and subsequently implement deferred save/restore of the 32-bit registers, including the 32-bit SPSRs. Reviewed-by: Marc Zyngier <marc.zyngier@arm.com> Reviewed-by: Andrew Jones <drjones@redhat.com> Signed-off-by: Christoffer Dall <christoffer.dall@linaro.org> Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Diffstat (limited to 'virt')
-rw-r--r--virt/kvm/arm/aarch32.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/virt/kvm/arm/aarch32.c b/virt/kvm/arm/aarch32.c
index 8bc479fa37e6..efc84cbe8277 100644
--- a/virt/kvm/arm/aarch32.c
+++ b/virt/kvm/arm/aarch32.c
@@ -178,7 +178,7 @@ static void prepare_fault32(struct kvm_vcpu *vcpu, u32 mode, u32 vect_offset)
*vcpu_cpsr(vcpu) = cpsr;
/* Note: These now point to the banked copies */
- *vcpu_spsr(vcpu) = new_spsr_value;
+ vcpu_write_spsr(vcpu, new_spsr_value);
*vcpu_reg32(vcpu, 14) = *vcpu_pc(vcpu) + return_offset;
/* Branch to exception vector */