Commit 435bca5f authored Sep 06, 2016 by Marc Zyngier Committed by Christoffer Dall Sep 08, 2016

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>

parent cc325cfc

arch/arm/include/asm/kvm_asm.h

+4 −0

Original line number	Diff line number	Diff line
		@@ -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