On Tue, Feb 11, 2014 at 09:57:19PM -0800, Victor Kamensky wrote:
In case of guest CPU running in LE mode and host runs in BE mode we need byteswap data, so read/write is emulated correctly.
Signed-off-by: Victor Kamensky victor.kamensky@linaro.org
arch/arm64/include/asm/kvm_emulate.h | 22 ++++++++++++++++++++++ 1 file changed, 22 insertions(+)
diff --git a/arch/arm64/include/asm/kvm_emulate.h b/arch/arm64/include/asm/kvm_emulate.h index dd8ecfc..fdc3e21 100644 --- a/arch/arm64/include/asm/kvm_emulate.h +++ b/arch/arm64/include/asm/kvm_emulate.h @@ -213,6 +213,17 @@ static inline unsigned long vcpu_data_guest_to_host(struct kvm_vcpu *vcpu, default: return be64_to_cpu(data); }
- } else {
switch (len) {case 1:return data & 0xff;case 2:return le16_to_cpu(data & 0xffff);case 4:return le32_to_cpu(data & 0xffffffff);default:return le64_to_cpu(data);}return data; /* Leave LE untouched */ @@ -233,6 +244,17 @@ static inline unsigned long vcpu_data_host_to_guest(struct kvm_vcpu *vcpu, default: return cpu_to_be64(data); }
- } else {
switch (len) {case 1:return data & 0xff;case 2:return cpu_to_le16(data & 0xffff);case 4:return cpu_to_le32(data & 0xffffffff);default:return cpu_to_le64(data);}return data; /* Leave LE untouched */ -- 1.8.1.4
Again, given the ABI merge:
Reviewed-by: Christoffer Dall christoffer.dall@linaro.org