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authorChristoffer Dall <christoffer.dall@linaro.org>2017-10-03 14:02:12 +0200
committerMarc Zyngier <marc.zyngier@arm.com>2018-03-19 10:53:13 +0000
commit3f5c90b890acfa7ad0b817a67cfc5eaaf0e21f7d (patch)
tree34680c327ab34cdfd8b097638e59a02f6f648319 /virt
parentdc251406bf244080adbc1a69b5a171ec4b43c93c (diff)
downloadlinux-0-day-3f5c90b890acfa7ad0b817a67cfc5eaaf0e21f7d.tar.gz
linux-0-day-3f5c90b890acfa7ad0b817a67cfc5eaaf0e21f7d.tar.xz
KVM: arm64: Introduce VHE-specific kvm_vcpu_run
So far this is mostly (see below) a copy of the legacy non-VHE switch function, but we will start reworking these functions in separate directions to work on VHE and non-VHE in the most optimal way in later patches. The only difference after this patch between the VHE and non-VHE run functions is that we omit the branch-predictor variant-2 hardening for QC Falkor CPUs, because this workaround is specific to a series of non-VHE ARMv8.0 CPUs. Reviewed-by: Marc Zyngier <marc.zyngier@arm.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/arm.c12
1 files changed, 7 insertions, 5 deletions
diff --git a/virt/kvm/arm/arm.c b/virt/kvm/arm/arm.c
index 2062d93579717..09dbee56ed8f7 100644
--- a/virt/kvm/arm/arm.c
+++ b/virt/kvm/arm/arm.c
@@ -733,13 +733,15 @@ int kvm_arch_vcpu_ioctl_run(struct kvm_vcpu *vcpu, struct kvm_run *run)
*/
trace_kvm_entry(*vcpu_pc(vcpu));
guest_enter_irqoff();
- if (has_vhe())
- kvm_arm_vhe_guest_enter();
-
- ret = kvm_call_hyp(__kvm_vcpu_run, vcpu);
- if (has_vhe())
+ if (has_vhe()) {
+ kvm_arm_vhe_guest_enter();
+ ret = kvm_vcpu_run_vhe(vcpu);
kvm_arm_vhe_guest_exit();
+ } else {
+ ret = kvm_call_hyp(__kvm_vcpu_run_nvhe, vcpu);
+ }
+
vcpu->mode = OUTSIDE_GUEST_MODE;
vcpu->stat.exits++;
/*