arm64: KVM: Fix decoding of Rt/Rt2 when trapping AArch32 CP accesses

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Our 32bit CP14/15 handling inherited some of the ARMv7 code for handling
the trapped system registers, completely missing the fact that the
fields for Rt and Rt2 are now 5 bit wide, and not 4...

Let's fix it, and provide an accessor for the most common Rt case.

Cc: stable@vger.kernel.org
Reviewed-by: Christoffer Dall <cdall@linaro.org>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Christoffer Dall <cdall@linaro.org>

...

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Marc Zyngier 2017-04-27 19:06:48 +01:00 • committed by Christoffer Dall

parent 1edb632133

commit c667186f1c

2 changed files with 10 additions and 4 deletions

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6

arch/arm64/include/asm/kvm_emulate.h

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8

arch/arm64/kvm/sys_regs.c

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