From: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
To: Chris Wilson <chris@chris-wilson.co.uk>, intel-gfx@lists.freedesktop.org
Subject: Re: [PATCH 1/3] drm/i915: Stop marking the unaccessible scratch page as UC
Date: Mon, 22 Aug 2016 12:34:13 +0300 [thread overview]
Message-ID: <1471858453.3601.3.camel@linux.intel.com> (raw)
In-Reply-To: <20160822074431.26872-1-chris@chris-wilson.co.uk>
On ma, 2016-08-22 at 08:44 +0100, Chris Wilson wrote:
> Since by design, if not entirely by practice, nothing is allowed to
> access the scratch page we use to background fill the VM, then we do not
> need to ensure that it is coherent between the CPU and GPU.
> set_pages_uc() does a stop_machine() after changing the PAT, and that
> significantly impacts upon context creation throughput.
>
> Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Regards, Joonas
--
Joonas Lahtinen
Open Source Technology Center
Intel Corporation
_______________________________________________
Intel-gfx mailing list
Intel-gfx@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/intel-gfx
prev parent reply other threads:[~2016-08-22 9:34 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-08-22 7:44 [PATCH 1/3] drm/i915: Stop marking the unaccessible scratch page as UC Chris Wilson
2016-08-22 7:44 ` [PATCH 2/3] drm/i915: Embed the scratch page struct into each VM Chris Wilson
2016-08-22 10:21 ` Joonas Lahtinen
2016-08-22 11:01 ` Mika Kuoppala
2016-08-22 7:44 ` [PATCH 3/3] drm/i915: Allow DMA pagetables to use highmem Chris Wilson
2016-08-22 11:04 ` Joonas Lahtinen
2016-08-22 8:39 ` ✗ Ro.CI.BAT: failure for series starting with [1/3] drm/i915: Stop marking the unaccessible scratch page as UC Patchwork
2016-08-22 9:34 ` Joonas Lahtinen [this message]
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=1471858453.3601.3.camel@linux.intel.com \
--to=joonas.lahtinen@linux.intel.com \
--cc=chris@chris-wilson.co.uk \
--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 an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.