Re: [PATCH 12/14] x86/fpu: Pass explicit xsave areas to fpu_(f)xsave()

["Alejandro Vallejo" <alejandro.vallejo@cloud.com>]

On Tue Oct 29, 2024 at 8:37 AM GMT, Jan Beulich wrote:
> On 28.10.2024 16:49, Alejandro Vallejo wrote:
> > --- a/xen/arch/x86/xstate.c
> > +++ b/xen/arch/x86/xstate.c
> > @@ -300,9 +300,8 @@ void compress_xsave_states(struct vcpu *v, const void *src, unsigned int size)
> >      vcpu_unmap_xsave_area(v, xstate);
> >  }
> >  
> > -void xsave(struct vcpu *v, uint64_t mask)
> > +void xsave(struct vcpu *v, struct xsave_struct *ptr, uint64_t mask)
> >  {
> > -    struct xsave_struct *ptr = v->arch.xsave_area;
> >      uint32_t hmask = mask >> 32;
> >      uint32_t lmask = mask;
> >      unsigned int fip_width = v->domain->arch.x87_fip_width;
>
> Imo this change wants to constify v at the same time, to demonstrate that
> nothing is changed through v anymore. The comment may extend to other functions
> as well that are being altered here; I only closely looks at this one.
>
> Jan

I didn't think of that angle... I'll have a look and take it into account for
v2.

Cheers,
Alejandro