From: Jesse Barnes <jesse.barnes@intel.com>
To: venkatesh.pallipadi@intel.com
Cc: ak@muc.de, ebiederm@xmission.com, rdreier@cisco.com,
torvalds@linux-foundation.org, gregkh@suse.de, airlied@skynet.ie,
davej@redhat.com, mingo@elte.hu, tglx@linutronix.de,
hpa@zytor.com, akpm@linux-foundation.org, arjan@infradead.org,
linux-kernel@vger.kernel.org,
Suresh Siddha <suresh.b.siddha@intel.com>
Subject: Re: [RFC PATCH 08/12] PAT 64b: coherent mmap and sysfs bin ioctl
Date: Thu, 13 Dec 2007 16:54:08 -0800 [thread overview]
Message-ID: <200712131654.08669.jesse.barnes@intel.com> (raw)
In-Reply-To: <20071213235712.813201000@intel.com>
On Thursday, December 13, 2007 3:55 pm venkatesh.pallipadi@intel.com wrote:
> Forward port of coherent-mmap.patch and sysfs-bin-ioctl.patch to x86 tree.
>
> TBD: Do we need the ioctl interface to sysfs or get the type attribute
> through a different sysfs file. And then actually specify the attribute
> while doing pci_mmap_page_range ;-)
>
> And when this interface is in place, X server has to use this interface for
> WC mapping.
I remember talking with people about using madvise and/or mmap flags to set
the attributes correctly, but I don't remember whether it was a good idea or
not...
The advantage of a specific post-mmap call is that it would make setting the
attribute types a little easier, so either ioctl or madvise seems preferable
to mmapping over and over with different flags until you get the mapping.
Jesse
next prev parent reply other threads:[~2007-12-14 0:54 UTC|newest]
Thread overview: 52+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-12-13 23:55 [RFC PATCH 00/12] PAT 64b: PAT support for X86_64 venkatesh.pallipadi
2007-12-13 23:55 ` [RFC PATCH 01/12] PAT 64b: Add cpu_shutdown() support venkatesh.pallipadi
2007-12-13 23:55 ` [RFC PATCH 02/12] PAT 64b: Basic PAT implementation venkatesh.pallipadi
2007-12-14 0:42 ` Andi Kleen
2007-12-14 18:31 ` Venki Pallipadi
2007-12-18 4:50 ` Eric W. Biederman
2007-12-14 3:48 ` Eric W. Biederman
2007-12-14 4:23 ` Eric W. Biederman
2007-12-14 21:10 ` Siddha, Suresh B
2007-12-14 23:34 ` Siddha, Suresh B
2007-12-15 7:55 ` Ingo Molnar
2007-12-14 10:25 ` Andi Kleen
2007-12-14 19:45 ` H. Peter Anvin
2007-12-18 4:42 ` Eric W. Biederman
2007-12-14 21:06 ` Siddha, Suresh B
2007-12-13 23:55 ` [RFC PATCH 03/12] PAT 64b: drm driver changes for PAT venkatesh.pallipadi
2007-12-13 23:55 ` [RFC PATCH 04/12] PAT 64b: reserve_mattr and free_mattr " venkatesh.pallipadi
2007-12-13 23:55 ` [RFC PATCH 05/12] PAT 64b: pci mmap conlfict patch venkatesh.pallipadi
2007-12-13 23:55 ` [RFC PATCH 06/12] PAT 64b: Add ioremap_wc support venkatesh.pallipadi
2007-12-14 4:17 ` Roland Dreier
2007-12-14 4:28 ` Eric W. Biederman
2007-12-14 4:32 ` Roland Dreier
2007-12-14 4:48 ` Eric W. Biederman
2007-12-14 21:40 ` Siddha, Suresh B
2007-12-14 23:19 ` Andi Kleen
2007-12-18 8:29 ` Eric W. Biederman
2007-12-13 23:55 ` [RFC PATCH 07/12] PAT 64b: dev mem chanegs for pat venkatesh.pallipadi
2007-12-13 23:55 ` [RFC PATCH 08/12] PAT 64b: coherent mmap and sysfs bin ioctl venkatesh.pallipadi
2007-12-14 0:19 ` Greg KH
2007-12-14 0:35 ` David Miller
2007-12-14 6:34 ` Greg KH
2007-12-16 21:57 ` Paul Mackerras
2007-12-17 12:41 ` Andi Kleen
2007-12-18 4:30 ` Eric W. Biederman
2007-12-18 4:51 ` H. Peter Anvin
2007-12-18 9:35 ` Andi Kleen
2007-12-18 13:48 ` Eric W. Biederman
2007-12-14 0:43 ` Andi Kleen
2007-12-14 0:54 ` Jesse Barnes [this message]
2007-12-14 3:59 ` Eric W. Biederman
2007-12-14 6:02 ` Greg KH
2007-12-14 6:04 ` Eric W. Biederman
2007-12-14 10:19 ` Andi Kleen
2007-12-13 23:55 ` [RFC PATCH 09/12] PAT 64b: map only usable memory in identity mapping venkatesh.pallipadi
2007-12-13 23:55 ` [RFC PATCH 10/12] PAT 64b: Make acpi use early map instead of assuming identity map venkatesh.pallipadi
2007-12-13 23:55 ` [RFC PATCH 11/12] PAT 64b: devmem do not read pages not mapped in " venkatesh.pallipadi
2007-12-13 23:55 ` [RFC PATCH 12/12] PAT 64b: skip attr tracking for RAM venkatesh.pallipadi
2007-12-14 0:28 ` [RFC PATCH 00/12] PAT 64b: PAT support for X86_64 Dave Airlie
2007-12-14 22:00 ` Siddha, Suresh B
2007-12-14 22:27 ` Dave Airlie
2007-12-14 22:32 ` H. Peter Anvin
2007-12-14 22:37 ` Dave Airlie
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=200712131654.08669.jesse.barnes@intel.com \
--to=jesse.barnes@intel.com \
--cc=airlied@skynet.ie \
--cc=ak@muc.de \
--cc=akpm@linux-foundation.org \
--cc=arjan@infradead.org \
--cc=davej@redhat.com \
--cc=ebiederm@xmission.com \
--cc=gregkh@suse.de \
--cc=hpa@zytor.com \
--cc=linux-kernel@vger.kernel.org \
--cc=mingo@elte.hu \
--cc=rdreier@cisco.com \
--cc=suresh.b.siddha@intel.com \
--cc=tglx@linutronix.de \
--cc=torvalds@linux-foundation.org \
--cc=venkatesh.pallipadi@intel.com \
/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).