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

[Yang Zhong]

On Mon, Jan 24, 2022 at 11:15:25AM +0100, Paolo Bonzini wrote:
> 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.

     Thanks Paolo, new version will change this.

     Yang
> 
> Paolo