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| author | Marc Zyngier <marc.zyngier@arm.com> | 2016-09-06 15:02:13 +0200 |
|---|---|---|
| committer | Christoffer Dall <christoffer.dall@linaro.org> | 2016-09-08 12:53:00 +0200 |
| commit | 5d7bcf7d644a88183fb34fca12ad6ea40a8db7ab (patch) | |
| tree | 48969d8e6e14a595e1bf3e8034ac122b1d7fff1d /arch/arm/kvm | |
| parent | arm: KVM: Handle async aborts delivered while at HYP (diff) | |
| download | linux-5d7bcf7d644a88183fb34fca12ad6ea40a8db7ab.tar.xz linux-5d7bcf7d644a88183fb34fca12ad6ea40a8db7ab.zip | |
arm: KVM: Inject a Virtual Abort if it was pending
If we have caught an Abort whilst exiting, we've tagged the
exit code with the pending information. In that case, let's
re-inject the error into the guest, after having adjusted
the PC if required.
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Christoffer Dall <christoffer.dall@linaro.org>
Diffstat (limited to 'arch/arm/kvm')
| -rw-r--r-- | arch/arm/kvm/handle_exit.c | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/arch/arm/kvm/handle_exit.c b/arch/arm/kvm/handle_exit.c index 863fdf42668e..4eacb5cb60e8 100644 --- a/arch/arm/kvm/handle_exit.c +++ b/arch/arm/kvm/handle_exit.c @@ -144,6 +144,25 @@ int handle_exit(struct kvm_vcpu *vcpu, struct kvm_run *run, { exit_handle_fn exit_handler; + if (ARM_ABORT_PENDING(exception_index)) { + u8 hsr_ec = kvm_vcpu_trap_get_class(vcpu); + + /* + * HVC/SMC already have an adjusted PC, which we need + * to correct in order to return to after having + * injected the abort. + */ + if (hsr_ec == HSR_EC_HVC || hsr_ec == HSR_EC_SMC) { + u32 adj = kvm_vcpu_trap_il_is32bit(vcpu) ? 4 : 2; + *vcpu_pc(vcpu) -= adj; + } + + kvm_inject_vabt(vcpu); + return 1; + } + + exception_index = ARM_EXCEPTION_CODE(exception_index); + switch (exception_index) { case ARM_EXCEPTION_IRQ: return 1; |