diff options
| author | Marc Zyngier <marc.zyngier@arm.com> | 2017-04-27 19:06:48 +0100 |
|---|---|---|
| committer | Christoffer Dall <cdall@linaro.org> | 2017-05-02 09:53:46 +0200 |
| commit | c667186f1c01ca8970c785888868b7ffd74e51ee (patch) | |
| tree | 39b6ea8b862bc9703ccbc0ef09fd85a4191e61bd /arch/arm64/include | |
| parent | 1edb632133efb6226b6bef3e7d9fa8c7134ac4e2 (diff) | |
arm64: KVM: Fix decoding of Rt/Rt2 when trapping AArch32 CP accesses
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>
Diffstat (limited to 'arch/arm64/include')
| -rw-r--r-- | arch/arm64/include/asm/kvm_emulate.h | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/arch/arm64/include/asm/kvm_emulate.h b/arch/arm64/include/asm/kvm_emulate.h index f5ea0ba70f07..fe39e6841326 100644 --- a/arch/arm64/include/asm/kvm_emulate.h +++ b/arch/arm64/include/asm/kvm_emulate.h @@ -240,6 +240,12 @@ static inline u8 kvm_vcpu_trap_get_fault_type(const struct kvm_vcpu *vcpu) return kvm_vcpu_get_hsr(vcpu) & ESR_ELx_FSC_TYPE; } +static inline int kvm_vcpu_sys_get_rt(struct kvm_vcpu *vcpu) +{ + u32 esr = kvm_vcpu_get_hsr(vcpu); + return (esr & ESR_ELx_SYS64_ISS_RT_MASK) >> ESR_ELx_SYS64_ISS_RT_SHIFT; +} + static inline unsigned long kvm_vcpu_get_mpidr_aff(struct kvm_vcpu *vcpu) { return vcpu_sys_reg(vcpu, MPIDR_EL1) & MPIDR_HWID_BITMASK; |