linux-kernel - Re: [PATCH] drm/amdgpu: Register bad page handler for Aldebaran

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Message-ID: <CADnq5_PibVG4JRwtpX7at-dz6eT=XP8=pdy6a+4kCumdPxooeg@mail.gmail.com>
Date:   Thu, 13 May 2021 11:02:02 -0400
From:   Alex Deucher <alexdeucher@...il.com>
To:     Borislav Petkov <bp@...en8.de>
Cc:     "Joshi, Mukul" <Mukul.Joshi@....com>, x86-ml <x86@...nel.org>,
        "Kasiviswanathan, Harish" <Harish.Kasiviswanathan@....com>,
        lkml <linux-kernel@...r.kernel.org>,
        "amd-gfx@...ts.freedesktop.org" <amd-gfx@...ts.freedesktop.org>
Subject: Re: [PATCH] drm/amdgpu: Register bad page handler for Aldebaran

On Thu, May 13, 2021 at 10:57 AM Borislav Petkov <bp@...en8.de> wrote:
>
> On Thu, May 13, 2021 at 10:32:45AM -0400, Alex Deucher wrote:
> > Right.  The sys admin can query the bad page count and decide when to
> > retire the card.
>
> Yap, although the driver should actively "tell" the sysadmin when some
> critical counts of retired VRAM pages are reached because I doubt all
> admins would go look at those counts on their own.

I think we print something in the log as well when we hit the
threshold.  I need to double check the code.

>
> Btw, you say "admin" - am I to understand that those are some high end
> GPU cards with ECC memory? If consumer grade stuff has this too, then
> the driver should very much warn on such levels on its own because
> normal users won't know what and where to look.
>

Currently it's only available on workstation and datacenter boards.

> Other than that, the big picture sounds good to me.

Thanks!

Alex

>
> Thx.
>
> --
> Regards/Gruss,
>     Boris.
>
> https://people.kernel.org/tglx/notes-about-netiquette