diff options
| author | Will Deacon <will@kernel.org> | 2020-07-29 11:28:19 +0100 |
|---|---|---|
| committer | Marc Zyngier <maz@kernel.org> | 2020-07-30 16:02:37 +0100 |
| commit | 84b951a803a5464b0bff2fb1366e96f07f75b066 (patch) | |
| tree | 9450a719ec5d5dfa5c71d50187dc1a8786d4d08e /arch/arm64/kvm | |
| parent | c9a636f29b5f236441ff059cef0b2fe734c05afd (diff) | |
KVM: arm64: Handle data and instruction external aborts the same way
If the guest generates a synchronous external abort which is not handled
by the host, we inject it back into the guest as a virtual SError, but
only if the original fault was reported on the data side. Instruction
faults are reported as "Unsupported FSC", causing the vCPU run loop to
bail with -EFAULT.
Although synchronous external aborts from a guest are pretty unusual,
treat them the same regardless of whether they are taken as data or
instruction aborts by EL2.
Signed-off-by: Will Deacon <will@kernel.org>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Cc: Marc Zyngier <maz@kernel.org>
Cc: Quentin Perret <qperret@google.com>
Link: https://lore.kernel.org/r/20200729102821.23392-3-will@kernel.org
Diffstat (limited to 'arch/arm64/kvm')
| -rw-r--r-- | arch/arm64/kvm/mmu.c | 9 |
1 files changed, 3 insertions, 6 deletions
diff --git a/arch/arm64/kvm/mmu.c b/arch/arm64/kvm/mmu.c index 8004f1f68946..14c6a9df5c9f 100644 --- a/arch/arm64/kvm/mmu.c +++ b/arch/arm64/kvm/mmu.c @@ -2079,13 +2079,10 @@ int kvm_handle_guest_abort(struct kvm_vcpu *vcpu, struct kvm_run *run) * For RAS the host kernel may handle this abort. * There is no need to pass the error into the guest. */ - if (!kvm_handle_guest_sea(fault_ipa, kvm_vcpu_get_esr(vcpu))) - return 1; - - if (unlikely(!is_iabt)) { + if (kvm_handle_guest_sea(fault_ipa, kvm_vcpu_get_esr(vcpu))) kvm_inject_vabt(vcpu); - return 1; - } + + return 1; } trace_kvm_guest_fault(*vcpu_pc(vcpu), kvm_vcpu_get_esr(vcpu), |