RE: [PATCH] drm/amdkfd: Add SVM API support capability bits

Sierra Guiza, Alejandro (Alex)
2022-03-30T22:05:02Z

Hi Matthew,
I sent this patch by accident. Please ignore it.

Regards,
Alex Sierra

> -----Original Message-----
> From: Matthew Wilcox <willy@infradead.org>
> Sent: Wednesday, March 30, 2022 4:29 PM
> To: Sierra Guiza, Alejandro (Alex) <Alex.Sierra@amd.com>
> Cc: jgg@nvidia.com; david@redhat.com; Kuehling, Felix
> <Felix.Kuehling@amd.com>; linux-mm@kvack.org; rcampbell@nvidia.com;
> linux-ext4@vger.kernel.org; linux-xfs@vger.kernel.org; amd-
> gfx@lists.freedesktop.org; dri-devel@lists.freedesktop.org; hch@lst.de;
> jglisse@redhat.com; apopple@nvidia.com; akpm@linux-foundation.org
> Subject: Re: [PATCH] drm/amdkfd: Add SVM API support capability bits
>
> On Wed, Mar 30, 2022 at 04:24:20PM -0500, Alex Sierra wrote:
> > From: Philip Yang <Philip.Yang@amd.com>
> >
> > SVMAPISupported property added to HSA_CAPABILITY, the value match
> > HSA_CAPABILITY defined in Thunk spec:
> >
> > SVMAPISupported: it will not be supported on older kernels that don't
> > have HMM or on systems with GFXv8 or older GPUs without support for
> > 48-bit virtual addresses.
> >
> > CoherentHostAccess property added to HSA_MEMORYPROPERTY, the
> value
> > match HSA_MEMORYPROPERTY defined in Thunk spec:
> >
> > CoherentHostAccess: whether or not device memory can be coherently
> > accessed by the host CPU.
>
> Could you translate this commit message into English? Reviewing
> Documentation/process/5.Posting.rst might be helpful.