Mark Rutland a425372e73 KVM: arm64: Correct PSTATE on exception entry ... When KVM injects an exception into a guest, it generates the PSTATE value from scratch, configuring PSTATE.{M[4:0],DAIF}, and setting all other bits to zero. This isn't correct, as the architecture specifies that some PSTATE bits are (conditionally) cleared or set upon an exception, and others are unchanged from the original context. This patch adds logic to match the architectural behaviour. To make this simple to follow/audit/extend, documentation references are provided, and bits are configured in order of their layout in SPSR_EL2. This layout can be seen in the diagram on ARM DDI 0487E.a page C5-429. Signed-off-by: Mark Rutland <mark.rutland@arm.com> Signed-off-by: Marc Zyngier <maz@kernel.org> Reviewed-by: Alexandru Elisei <alexandru.elisei@arm.com> Cc: stable@vger.kernel.org Link: https://lore.kernel.org/r/20200108134324.46500-2-mark.rutland@arm.com		2020-01-19 18:06:13 +00:00
..
asm	KVM: arm64: Only sign-extend MMIO up to register width	2020-01-19 16:05:10 +00:00
uapi/asm	KVM: arm64: Correct PSTATE on exception entry	2020-01-19 18:06:13 +00:00