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SubjectRe: [PATCH v2 01/29] LoongArch: KVM: Add kvm related header files
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在 2023年02月21日 12:36, Xi Ruoyao 写道:
> On Mon, 2023-02-20 at 14:57 +0800, Tianrui Zhao wrote:
>
> /* snip */
>
>> +/*
>> + * for KVM_GET_FPU and KVM_SET_FPU
>> + */
>> +struct kvm_fpu {
>> + __u32 fcsr;
>> + __u32 none;
>> + __u64 fcc; /* 8x8 */
>> + struct kvm_fpureg {
>> + __u64 val64[4]; //support max 256 bits
>> + } fpr[32];
> Do we need __attribute__((__aligned__(16))) for fpureg (like
> sc_extcontext in struct sigcontext)?

Thanks, the loongarch_fpu variable is already has FPU_ALIGN feature in
the kvm_vcpu_arch structure, so it need not to use __aligned__(16).

Thanks
Tianrui Zhao

>
>> +};
>> +
>> +/*
>> + * For LOONGARCH, we use KVM_SET_ONE_REG and KVM_GET_ONE_REG to
> ^^^^^^^^^
> LoongArch

Thanks, I will fix it

Thanks
Tianrui Zhao

>
>> access various
>> + * registers. The id field is broken down as follows:
>> + *
>> + * bits[63..52] - As per linux/kvm.h
>> + * bits[51..32] - Must be zero.
>> + * bits[31..16] - Register set.

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