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cb96408da4
linux-next/arch/arm64/kvm
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Vladimir Murzin cb96408da4 arm64: KVM: VHE: reset PSTATE.PAN on entry to EL2 
SCTLR_EL2.SPAN bit controls what happens with the PSTATE.PAN bit on an
exception. However, this bit has no effect on the PSTATE.PAN when
HCR_EL2.E2H or HCR_EL2.TGE is unset. Thus when VHE is used and
exception taken from a guest PSTATE.PAN bit left unchanged and we
continue with a value guest has set.

To address that always reset PSTATE.PAN on entry from EL1.

Fixes: 1f364c8c48 ("arm64: VHE: Add support for running Linux in EL2 mode")

Signed-off-by: Vladimir Murzin <vladimir.murzin@arm.com>
Reviewed-by: James Morse <james.morse@arm.com>
Acked-by: Marc Zyngier <marc.zyngier@arm.com>
Cc: <stable@vger.kernel.org> # v4.6+
Signed-off-by: Christoffer Dall <christoffer.dall@linaro.org>
2016-09-08 12:53:00 +02:00
..
hyp arm64: KVM: VHE: reset PSTATE.PAN on entry to EL2 2016-09-08 12:53:00 +02:00
debug.c KVM: arm64: add trace points for guest_debug debug 2015-07-21 12:50:43 +01:00
emulate.c arm64: kvm: move to ESR_ELx macros 2015-01-15 12:24:25 +00:00
guest.c KVM: ARM64: Fix typos 2016-06-14 11:16:27 +02:00
handle_exit.c arm64/kvm: use ESR_ELx_EC to extract EC 2016-06-21 17:07:38 +01:00
hyp-init.S arm64: KVM: Simplify HYP init/teardown 2016-07-03 23:41:27 +02:00
hyp.S arm64: hyp/kvm: Make hyp-stub extensible 2016-04-28 12:05:46 +01:00
inject_fault.c arm64: KVM: Set cpsr before spsr on fault injection 2016-08-01 15:09:47 +01:00
irq.h KVM: arm/arm64: Enable irqchip routing 2016-07-22 18:52:01 +01:00
Kconfig KVM: arm/arm64: Enable irqchip routing 2016-07-22 18:52:01 +01:00
Makefile KVM: arm/arm64: Enable irqchip routing 2016-07-22 18:52:01 +01:00
regmap.c arm64: KVM: 32bit GP register access 2013-06-12 16:42:14 +01:00
reset.c KVM: arm64: vgic-its: Enable ITS emulation as a virtual MSI controller 2016-07-18 18:14:38 +01:00
sys_regs_generic_v8.c arm64: KVM: Correctly handle zero register in system register accesses 2015-12-04 16:29:54 +00:00
sys_regs.c arm64: KVM: report configured SRE value to 32-bit world 2016-08-17 12:46:23 +02:00
sys_regs.h arm64: KVM: Correctly handle zero register in system register accesses 2015-12-04 16:29:54 +00:00
trace.h KVM: arm64: add trace points for guest_debug debug 2015-07-21 12:50:43 +01:00