Intel-GFX Archive on lore.kernel.org
 help / color / mirror / Atom feed
From: Eric Anholt <eric@anholt.net>
To: Chris Wilson <chris@chris-wilson.co.uk>, intel-gfx@lists.freedesktop.org
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Subject: Re: [PATCH] drm/i915: Prevent use of pages >4GiB on 965G[M]
Date: Wed, 20 Apr 2011 17:21:03 -0700	[thread overview]
Message-ID: <87oc40o3o0.fsf@pollan.anholt.net> (raw)
In-Reply-To: <1303058252-16961-1-git-send-email-chris@chris-wilson.co.uk>


[-- Attachment #1.1: Type: text/plain, Size: 577 bytes --]

On Sun, 17 Apr 2011 17:37:32 +0100, Chris Wilson <chris@chris-wilson.co.uk> wrote:
> The 965G (Broadwater) and 965GM (Crestline) chipsets had many errata in
> handling pages allocation above 4GiB. So we should be careful never to
> allocate and attempt to pass such through to the GPU and so limit
> ourselves to GFP_DMA32 on those chipsets.

Unfortunate to see this -- were there more particular bugs in >4GB
handling found, or is it just "I'm tired of worrying about it, let's
avoid this class of problem"?  I'm not saying "no" to this patch for
either answer, just curious.

[-- Attachment #1.2: Type: application/pgp-signature, Size: 197 bytes --]

[-- Attachment #2: Type: text/plain, Size: 159 bytes --]

_______________________________________________
Intel-gfx mailing list
Intel-gfx@lists.freedesktop.org
http://lists.freedesktop.org/mailman/listinfo/intel-gfx

  reply	other threads:[~2011-04-21  0:21 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2011-04-17 16:37 [PATCH] drm/i915: Prevent use of pages >4GiB on 965G[M] Chris Wilson
2011-04-21  0:21 ` Eric Anholt [this message]
2011-04-21  6:03   ` Chris Wilson

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=87oc40o3o0.fsf@pollan.anholt.net \
    --to=eric@anholt.net \
    --cc=chris@chris-wilson.co.uk \
    --cc=daniel.vetter@ffwll.ch \
    --cc=intel-gfx@lists.freedesktop.org \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body. 
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox