From: catalin.marinas@arm.com (Catalin Marinas)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH v2 1/4] ARM: mm: correct pte_same behaviour for LPAE.
Date: Fri, 24 May 2013 11:59:58 +0100 [thread overview]
Message-ID: <20130524105958.GA18272@arm.com> (raw)
In-Reply-To: <1369323080-9673-2-git-send-email-steve.capper@linaro.org>
On Thu, May 23, 2013 at 04:31:17PM +0100, Steve Capper wrote:
> For 3 levels of paging the PTE_EXT_NG bit will be set for user
> address ptes that are written to a page table but not for ptes
> created with mk_pte.
>
> This can cause some comparison tests made by pte_same to fail
> spuriously and lead to other problems.
>
> To correct this behaviour, we mask off PTE_EXT_NG for any pte that
> is present before running the comparison.
>
> Signed-off-by: Steve Capper <steve.capper@linaro.org>
> Reviewed-by: Will Deacon <will.deacon@arm.com>
Reviewed-by: Catalin Marinas <catalin.marinas@arm.com>
next prev parent reply other threads:[~2013-05-24 10:59 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-05-23 15:31 [PATCH v2 0/4] ARM: mm: HugeTLB + THP support Steve Capper
2013-05-23 15:31 ` [PATCH v2 1/4] ARM: mm: correct pte_same behaviour for LPAE Steve Capper
2013-05-24 10:59 ` Catalin Marinas [this message]
2013-05-23 15:31 ` [PATCH v2 2/4] ARM: mm: Add support for flushing HugeTLB pages Steve Capper
2013-05-24 11:01 ` Catalin Marinas
2013-05-23 15:31 ` [PATCH v2 3/4] ARM: mm: HugeTLB support for LPAE systems Steve Capper
2013-05-24 11:03 ` Catalin Marinas
2013-05-28 8:59 ` Steve Capper
2013-05-23 15:31 ` [PATCH v2 4/4] ARM: mm: Transparent huge page " Steve Capper
2013-06-03 10:40 ` [PATCH v2 0/4] ARM: mm: HugeTLB + THP support Steve Capper
2013-06-04 12:56 ` Steve Capper
2013-06-04 13:03 ` Will Deacon
2013-06-04 13:13 ` Steve Capper
2013-06-04 14:37 ` Steve Capper
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=20130524105958.GA18272@arm.com \
--to=catalin.marinas@arm.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).