linux-kernel - RE: [patch 0/7] x86 PAT: v2 - track pfnmap mappings with remap_pfn_range and vm_insert

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Date:	Mon, 15 Dec 2008 13:50:05 -0800
From:	"Pallipadi, Venkatesh" <venkatesh.pallipadi@...el.com>
To:	"mingo@...e.hu" <mingo@...e.hu>, "hpa@...or.com" <hpa@...or.com>,
	"tglx@...utronix.de" <tglx@...utronix.de>
CC:	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: RE: [patch 0/7] x86 PAT: v2 - track pfnmap mappings with
 remap_pfn_range and vm_insert_pfn


Ingo,

Haven't seen any comments on the patches here. Can you push these patches along to tip.

Thanks,
Venki

>-----Original Message-----
>From: Pallipadi, Venkatesh
>Sent: Tuesday, November 25, 2008 4:22 PM
>To: akpm@...ux-foundation.org; npiggin@...e.de;
>hugh@...itas.com; mingo@...e.hu; hpa@...or.com; tglx@...utronix.de
>Cc: rdreier@...co.com; jeremy@...p.org;
>jbarnes@...tuousgeek.org; arjan@...radead.org; linux-kernel@;
>Siddha, Suresh B
>Subject: [patch 0/7] x86 PAT: v2 - track pfnmap mappings with
>remap_pfn_range and vm_insert_pfn
>
>Followup for the patches posted earlier here:
>http://marc.info/?l=linux-kernel&m=122653213110404&w=2
>
>Drivers use mmap followed by pgprot_* and remap_pfn_range or
>vm_insert_pfn,
>in order to export reserved memory to userspace. Currently,
>such mappings are
>not tracked and hence not kept consistent with other mappings
>(/dev/mem,
>pci resource, ioremap) for the sme memory, that may exist in
>the system.
>
>The following patchset adds x86 PAT attribute tracking and
>untracking for
>pfnmap related APIs.
>
>First three patches in the patchset are changing the generic
>mm code to fit
>in this tracking. Last four patches are x86 specific to make
>things work
>with x86 PAT code. The patchset aso introduces
>pgprot_writecombine interface,
>which gives writecombine mapping when enabled, falling back to
>pgprot_noncached otherwise.
>
>
>--
>
>
--
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