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| author |   Marc Zyngier <marc.zyngier@arm.com> | 2018-12-06 17:31:21 +0000 |
|---|---|---|
| committer |   Will Deacon <will.deacon@arm.com> | 2018-12-10 11:58:48 +0000 |
| commit | bfae1b98ef0baeac1b724ef890cc75f77eccbdd9 (patch) | |
| tree | 53f157cbbb7830b1a09fef9cab3eb2deb43428a2 /arch/arm64/kvm/hyp/switch.c | |
| parent | KVM: arm64: Rework detection of SVE, !VHE systems (diff) | |
| download | linux-dev-bfae1b98ef0baeac1b724ef890cc75f77eccbdd9.tar.xz linux-dev-bfae1b98ef0baeac1b724ef890cc75f77eccbdd9.zip | |
arm64: KVM: Install stage-2 translation before enabling traps
It is a bit odd that we only install stage-2 translation after having
cleared HCR_EL2.TGE, which means that there is a window during which
AT requests could fail as stage-2 is not configured yet.
Let's move stage-2 configuration before we clear TGE, making the
guest entry sequence clearer: we first configure all the guest stuff,
then only switch to the guest translation regime.
While we're at it, do the same thing for !VHE. It doesn't hurt,
and keeps things symmetric.
Acked-by: Christoffer Dall <christoffer.dall@arm.com>
Reviewed-by: James Morse <james.morse@arm.com>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Diffstat (limited to 'arch/arm64/kvm/hyp/switch.c')
| -rw-r--r-- | arch/arm64/kvm/hyp/switch.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/arch/arm64/kvm/hyp/switch.c b/arch/arm64/kvm/hyp/switch.c index 7cc175c88a37..a8fa61c68c32 100644 --- a/arch/arm64/kvm/hyp/switch.c +++ b/arch/arm64/kvm/hyp/switch.c @@ -499,8 +499,8 @@ int kvm_vcpu_run_vhe(struct kvm_vcpu *vcpu) sysreg_save_host_state_vhe(host_ctxt); - __activate_traps(vcpu); __activate_vm(vcpu->kvm); + __activate_traps(vcpu); sysreg_restore_guest_state_vhe(guest_ctxt); __debug_switch_to_guest(vcpu); @@ -545,8 +545,8 @@ int __hyp_text __kvm_vcpu_run_nvhe(struct kvm_vcpu *vcpu) __sysreg_save_state_nvhe(host_ctxt); - __activate_traps(vcpu); __activate_vm(kern_hyp_va(vcpu->kvm)); + __activate_traps(vcpu); __hyp_vgic_restore_state(vcpu); __timer_enable_traps(vcpu); |