From: cyril@ti.com (Cyril Chemparathy)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH v4 00/13] ARM LPAE Fixes - Part 1
Date: Fri, 1 Feb 2013 10:10:37 -0500 [thread overview]
Message-ID: <510BDAED.8060805@ti.com> (raw)
In-Reply-To: <alpine.LFD.2.02.1301312252230.6300@xanadu.home>
Hi Nico,
On 01/31/2013 11:00 PM, Nicolas Pitre wrote:
> On Thu, 31 Jan 2013, Cyril Chemparathy wrote:
>
>> This series is a repost of the LPAE related changes in preparation for the
>> introduction of the Keystone sub-architecture. The original series has now
>> been split, and this particular series excludes the earlier changes to the
>> runtime code patching implementation. Earlier versions of this series can be
>> found at [1], [2], [3] and [4].
>>
>> These patches are also available in git:
>> git://git.kernel.org/pub/scm/linux/kernel/git/cchemparathy/linux-keystone.git upstream/keystone-lpae-v4
>
> This part 1 looks very nice. It received many review cycles already as
> well. It would be about time it goes upstream.
>
> I think it is ready to be merged in Russell's tree. Feel free to send
> him a pull request whenever you're ready.
>
Great. I'll apply your acks and post a pull request.
> Then we'll be free to look at the more controvertial p2v patching stuff.
>
On the P2V patching stuff, I've implemented an alternative approach to
get past this problem. Essentially, the new implementation retains the
kernel location detection part, but avoids the code patching by using
simple inline P2V and V2P functions that use the offset detected early
on in boot.
With this, I ran simple network and filesystem performance tests to
compare the code-patching vs. non-code-patching variants. These tests
didn't yield any significant performance difference between the two on
an ARMv7 (Cortex-A8) platform.
This series is basically operational at this point, but it needs a bit
more test coverage before I post it out.
Thanks
-- Cyril.
next prev parent reply other threads:[~2013-02-01 15:10 UTC|newest]
Thread overview: 30+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-01-31 21:58 [PATCH v4 00/13] ARM LPAE Fixes - Part 1 Cyril Chemparathy
2013-01-31 21:58 ` [PATCH v4 01/13] ARM: LPAE: use signed arithmetic for mask definitions Cyril Chemparathy
2013-01-31 21:58 ` [PATCH v4 02/13] ARM: LPAE: use phys_addr_t in alloc_init_pud() Cyril Chemparathy
2013-02-01 3:11 ` Hui Wang
2013-02-01 3:35 ` Nicolas Pitre
2013-02-01 5:40 ` Hui Wang
2013-02-01 17:33 ` Subash Patel
2013-02-01 17:56 ` Cyril Chemparathy
2013-02-01 18:14 ` Nicolas Pitre
2013-02-01 20:32 ` Subash Patel
2013-01-31 21:58 ` [PATCH v4 03/13] ARM: LPAE: use phys_addr_t in free_memmap() Cyril Chemparathy
2013-01-31 21:58 ` [PATCH v4 04/13] ARM: LPAE: use phys_addr_t for initrd location Cyril Chemparathy
2013-01-31 21:58 ` [PATCH v4 05/13] ARM: LPAE: use phys_addr_t in switch_mm() Cyril Chemparathy
2013-01-31 21:58 ` [PATCH v4 06/13] ARM: LPAE: use 64-bit accessors for TTBR registers Cyril Chemparathy
2013-01-31 21:58 ` [PATCH v4 07/13] ARM: LPAE: define ARCH_LOW_ADDRESS_LIMIT for bootmem Cyril Chemparathy
2013-02-01 3:42 ` Nicolas Pitre
2013-01-31 21:58 ` [PATCH v4 08/13] ARM: LPAE: factor out T1SZ and TTBR1 computations Cyril Chemparathy
2013-01-31 21:58 ` [PATCH v4 09/13] ARM: LPAE: accomodate >32-bit addresses for page table base Cyril Chemparathy
2013-02-01 3:48 ` Nicolas Pitre
2013-01-31 21:58 ` [PATCH v4 10/13] ARM: mm: use physical addresses in highmem sanity checks Cyril Chemparathy
2013-01-31 21:58 ` [PATCH v4 11/13] ARM: mm: cleanup checks for membank overlap with vmalloc area Cyril Chemparathy
2013-01-31 21:58 ` [PATCH v4 12/13] ARM: mm: clean up membank size limit checks Cyril Chemparathy
2013-01-31 21:58 ` [PATCH v4 13/13] ARM: fix type of PHYS_PFN_OFFSET to unsigned long Cyril Chemparathy
2013-02-01 3:51 ` Nicolas Pitre
2013-02-01 4:00 ` [PATCH v4 00/13] ARM LPAE Fixes - Part 1 Nicolas Pitre
2013-02-01 15:10 ` Cyril Chemparathy [this message]
2013-02-01 15:14 ` Russell King - ARM Linux
2013-02-01 16:13 ` Cyril Chemparathy
2013-02-01 17:56 ` Nicolas Pitre
2013-02-01 20:21 ` Subash Patel
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=510BDAED.8060805@ti.com \
--to=cyril@ti.com \
--cc=linux-arm-kernel@lists.infradead.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).