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| author | Marc Zyngier <marc.zyngier@arm.com> | 2016-09-06 16:02:05 +0300 |
|---|---|---|
| committer | Christoffer Dall <christoffer.dall@linaro.org> | 2016-09-08 13:53:00 +0300 |
| commit | 20163403a1f2fe3f00f59df2b45ea5cb74b85d97 (patch) | |
| tree | 9fb86408b49a8b3ba15501ced580139d7d60d9bb /arch/arm64/include/asm/kvm_asm.h | |
| parent | 1b51e5fac63f35b644302f2d39ec9af44887b598 (diff) | |
| download | linux-20163403a1f2fe3f00f59df2b45ea5cb74b85d97.tar.xz | |
arm64: KVM: Allow an exit code to be tagged with an SError
Similarily to EL1, an asynchronous abort can 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 SError" information.
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Christoffer Dall <christoffer.dall@linaro.org>
Diffstat (limited to 'arch/arm64/include/asm/kvm_asm.h')
| -rw-r--r-- | arch/arm64/include/asm/kvm_asm.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/arch/arm64/include/asm/kvm_asm.h b/arch/arm64/include/asm/kvm_asm.h index d177e7e115f4..18f746551bf6 100644 --- a/arch/arm64/include/asm/kvm_asm.h +++ b/arch/arm64/include/asm/kvm_asm.h @@ -20,6 +20,10 @@ #include <asm/virt.h> +#define ARM_EXIT_WITH_SERROR_BIT 31 +#define ARM_EXCEPTION_CODE(x) ((x) & ~(1U << ARM_EXIT_WITH_SERROR_BIT)) +#define ARM_SERROR_PENDING(x) !!((x) & (1U << ARM_EXIT_WITH_SERROR_BIT)) + #define ARM_EXCEPTION_IRQ 0 #define ARM_EXCEPTION_EL1_SERROR 1 #define ARM_EXCEPTION_TRAP 2 |