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authorMarc Zyngier <marc.zyngier@arm.com>2016-09-06 14:02:11 +0100
committerChristoffer Dall <christoffer.dall@linaro.org>2016-09-08 12:53:00 +0200
commit435bca5fe913e2e5f96881a77ab20e653f5ad894 (patch)
tree68ce7bff312373d043d7cb32ad83848a0e5db641 /arch/arm/include/asm/kvm_asm.h
parentcc325cfc37b5b9e8814d7172e3a6e47d3b098ff1 (diff)
downloadtalos-obmc-linux-435bca5fe913e2e5f96881a77ab20e653f5ad894.tar.gz
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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/arm/include/asm/kvm_asm.h')
-rw-r--r--arch/arm/include/asm/kvm_asm.h4
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
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