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| author | Marc Zyngier <marc.zyngier@arm.com> | 2017-04-27 21:06:48 +0300 |
|---|---|---|
| committer | Christoffer Dall <cdall@linaro.org> | 2017-05-02 10:53:46 +0300 |
| commit | c667186f1c01ca8970c785888868b7ffd74e51ee (patch) | |
| tree | 39b6ea8b862bc9703ccbc0ef09fd85a4191e61bd /arch/arm64/kvm | |
| parent | 1edb632133efb6226b6bef3e7d9fa8c7134ac4e2 (diff) | |
| download | linux-c667186f1c01ca8970c785888868b7ffd74e51ee.tar.xz | |
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/kvm')
| -rw-r--r-- | arch/arm64/kvm/sys_regs.c | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/arch/arm64/kvm/sys_regs.c b/arch/arm64/kvm/sys_regs.c index 8ddcee6e4702..ea9fbb5c17d0 100644 --- a/arch/arm64/kvm/sys_regs.c +++ b/arch/arm64/kvm/sys_regs.c @@ -1529,8 +1529,8 @@ static int kvm_handle_cp_64(struct kvm_vcpu *vcpu, { struct sys_reg_params params; u32 hsr = kvm_vcpu_get_hsr(vcpu); - int Rt = (hsr >> 5) & 0xf; - int Rt2 = (hsr >> 10) & 0xf; + int Rt = kvm_vcpu_sys_get_rt(vcpu); + int Rt2 = (hsr >> 10) & 0x1f; params.is_aarch32 = true; params.is_32bit = false; @@ -1586,7 +1586,7 @@ static int kvm_handle_cp_32(struct kvm_vcpu *vcpu, { struct sys_reg_params params; u32 hsr = kvm_vcpu_get_hsr(vcpu); - int Rt = (hsr >> 5) & 0xf; + int Rt = kvm_vcpu_sys_get_rt(vcpu); params.is_aarch32 = true; params.is_32bit = true; @@ -1688,7 +1688,7 @@ int kvm_handle_sys_reg(struct kvm_vcpu *vcpu, struct kvm_run *run) { struct sys_reg_params params; unsigned long esr = kvm_vcpu_get_hsr(vcpu); - int Rt = (esr >> 5) & 0x1f; + int Rt = kvm_vcpu_sys_get_rt(vcpu); int ret; trace_kvm_handle_sys_reg(esr); |