arm64: kvm: report original PAR_EL1 upon panic
authorMark Rutland <mark.rutland@arm.com>
Mon, 16 Nov 2015 13:58:29 +0000 (13:58 +0000)
committerChristoffer Dall <christoffer.dall@linaro.org>
Tue, 24 Nov 2015 17:20:58 +0000 (18:20 +0100)
commitfbb4574ce9a37e15a9872860bf202f2be5bdf6c4
treea5f5dd9d9e55a6fb3c4ba74ebca1d0dfb22303a7
parent1d7a4e313abbc7200982e5a68121483a3aa32295
arm64: kvm: report original PAR_EL1 upon panic

If we call __kvm_hyp_panic while a guest context is active, we call
__restore_sysregs before acquiring the system register values for the
panic, in the process throwing away the PAR_EL1 value at the point of
the panic.

This patch modifies __kvm_hyp_panic to stash the PAR_EL1 value prior to
restoring host register values, enabling us to report the original
values at the point of the panic.

Acked-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Christoffer Dall <christoffer.dall@linaro.org>
arch/arm64/kvm/hyp.S