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| author | Marc Zyngier <marc.zyngier@arm.com> | 2016-09-06 16:02:11 +0300 |
|---|---|---|
| committer | Christoffer Dall <christoffer.dall@linaro.org> | 2016-09-08 13:53:00 +0300 |
| commit | 435bca5fe913e2e5f96881a77ab20e653f5ad894 (patch) | |
| tree | 68ce7bff312373d043d7cb32ad83848a0e5db641 /arch | |
| parent | cc325cfc37b5b9e8814d7172e3a6e47d3b098ff1 (diff) | |
| download | linux-435bca5fe913e2e5f96881a77ab20e653f5ad894.tar.xz | |
arm: KVM: Allow an exit code to be tagged with a Virtual Abort
An asynchronous abort can also be triggered whilst running at EL2.
But instead of making that a new error code, we need to communicate
it to the rest of KVM together with the exit reason.
So let's hijack a single bit that allows the exception code to be
tagged with a "pending Abort" information.
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Christoffer Dall <christoffer.dall@linaro.org>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/arm/include/asm/kvm_asm.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/arch/arm/include/asm/kvm_asm.h b/arch/arm/include/asm/kvm_asm.h index 58faff5f1eb2..05e47faf96a1 100644 --- a/arch/arm/include/asm/kvm_asm.h +++ b/arch/arm/include/asm/kvm_asm.h @@ -21,6 +21,10 @@ #include <asm/virt.h> +#define ARM_EXIT_WITH_ABORT_BIT 31 +#define ARM_EXCEPTION_CODE(x) ((x) & ~(1U << ARM_EXIT_WITH_ABORT_BIT)) +#define ARM_ABORT_PENDING(x) !!((x) & (1U << ARM_EXIT_WITH_ABORT_BIT)) + #define ARM_EXCEPTION_RESET 0 #define ARM_EXCEPTION_UNDEFINED 1 #define ARM_EXCEPTION_SOFTWARE 2 |