archive mirror
 help / color / mirror / Atom feed
From: Calum Mackay <>
To: Calum Mackay <>
Cc: Christoph Hellwig <>,
	Calum Mackay <>,,,
Subject: Re: [PATCH]  2.4: export the symbol "mmu_cr4_features" for XFree86 DRM kernel drivers
Date: Sat, 02 Aug 2003 13:34:48 +0100	[thread overview]
Message-ID: <> (raw)
In-Reply-To: <>

[-- Attachment #1: Type: text/plain, Size: 642 bytes --]

Calum Mackay wrote:
> The radeon kernel driver source includes (via drm_memory.h) 
> linux/vmalloc.h, iff VMAP_4_ARGS is defined. The latter includes (on 
> i386) asm/asm-i386/pgtable.h, which includes asm/asm-i386/processor.h.
> processor.h defines some inline functions [set_in_cr4() & 
> clear_in_cr4()] which reference mmu_cr4_features.

Sadly, this isn't the full story, since the radeon code doesn't 
reference *_in_cr4.

The radeon code calls io/agp remap functions - again only ifdef 
VMAP_4_ARGS - which do however call __flush_tlb_all(). This manipulates 
the PGE bit via mmu_cr4_features.

apols for the spam...


[-- Attachment #2: S/MIME Cryptographic Signature --]
[-- Type: application/x-pkcs7-signature, Size: 3427 bytes --]

      reply	other threads:[~2003-08-02 12:35 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2003-08-01 12:52 [PATCH] 2.4: export the symbol "mmu_cr4_features" for XFree86 DRM kernel drivers Calum Mackay
2003-08-01 13:14 ` Christoph Hellwig
2003-08-02 11:54   ` Calum Mackay
2003-08-02 12:34     ` Calum Mackay [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:

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

  git send-email \ \ \ \ \ \ \ \

* 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).