Re: [PATCH 6/7] x86: add support for KVM_CAP_XSAVE2 and AMX state migration

[Paolo Bonzini]

On 1/24/22 08:55, Yang Zhong wrote:
> +    if (buflen > sizeof(struct kvm_xsave)) {
> +        e = &x86_ext_save_areas[XSTATE_XTILE_DATA_BIT];
> +
> +        if (e->size && e->offset) {
> +            const XSaveXTILEDATA *tiledata = buf + e->offset;
> +
> +            memcpy(&env->xtiledata, tiledata, sizeof(env->xtiledata));
> +        }
> +    }

Slightly nicer:

    e = &x86_ext_save_areas[XSTATE_XTILE_DATA_BIT];
    if (e->size && e->offset && buflen >= e->size + e->offset) {
        ...
    }

Same for xsave.

Paolo