Re: [PATCH v2 01/29] LoongArch: KVM: Add kvm related header files

[Xi Ruoyao]

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)?

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

> 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.

-- 
Xi Ruoyao <xry111@xxxxxxxxxxx>
School of Aerospace Science and Technology, Xidian University