From: Juergen Gross <jgross@suse.com>
To: benjamin.widawsky@intel.com
Cc: daniel.vetter@ffwll.ch, linux-kernel@vger.kernel.org
Subject: Usage of _PAGE_PCD et al in i915 driver
Date: Fri, 08 Aug 2014 13:23:36 +0200 [thread overview]
Message-ID: <53E4B338.3040904@suse.com> (raw)
Hi,
I'm just about to create a patch for full PAT support in the Linux
kernel, including Xen. For this purpose I introduce a translation
between cache modes and pte bits.
Scanning the kernel sources for usage of the cache mode bits in the
pte I discovered drivers/gpu/drm/i915/i915_gem_gtt.h is using
_PAGE_PCD, _PAGE_PWT and _PAGE_PAT. I think those defines are used
to create ptes not for usage by the main processor, but for the
graphics processor. Is this true? In this case I'd suggest to define
i915-specific macros instead of using the x86 ones.
Juergen
next reply other threads:[~2014-08-08 11:23 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-08-08 11:23 Juergen Gross [this message]
2014-08-08 13:14 ` Usage of _PAGE_PCD et al in i915 driver Daniel Vetter
2014-08-13 15:07 ` Jesse Barnes
2014-08-14 3:55 ` Juergen Gross
2014-08-15 10:21 ` [Intel-gfx] " Ville Syrjälä
2014-08-18 5:31 ` Juergen Gross
2014-08-18 10:21 ` Ville Syrjälä
2014-08-18 10:36 ` Juergen Gross
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=53E4B338.3040904@suse.com \
--to=jgross@suse.com \
--cc=benjamin.widawsky@intel.com \
--cc=daniel.vetter@ffwll.ch \
--cc=linux-kernel@vger.kernel.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;
as well as URLs for NNTP newsgroup(s).