From: minchan.kim@gmail.com (Minchan Kim)
To: linux-arm-kernel@lists.infradead.org
Subject: Question of kmap_atomic
Date: Fri, 16 Jul 2010 09:44:29 +0900 [thread overview]
Message-ID: <AANLkTilxlwewy5YqkdCG9qFUDSv4JaJCz_cpmEWPENqp@mail.gmail.com> (raw)
In-Reply-To: <AANLkTilFvE0eyQS7jNQ77OYkJovJugjKRO-fPHjX8CB9@mail.gmail.com>
Resend with fixing the mail address.
On Fri, Jul 16, 2010 at 9:41 AM, Minchan Kim <minchan.kim@gmail.com> wrote:
> I am stuck with looking at ARM's kmap_atomic.
> I am not familiar with ARM cache model.
> As I look the code, ARM seems to have a VIPT aliasing model.
>
> Before Nicolas's 17ebba1fe, kmap_atomic always calls kmap_high_get to
> prevent aliasing problem of 7929eb9cf64 regardless of VIVT and VIPT.
>
> But the patch made it to not call kmap_high_get when VIPT-aliasing
> model in CONFIG_DEBUG_HIGHMEM.
> Doesn't it cause aliasing problem as 7929eb9cf64 says, again?
>
> --
> Kind regards,
> Minchan Kim
>
--
Kind regards,
Minchan Kim
next parent reply other threads:[~2010-07-16 0:44 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <AANLkTilFvE0eyQS7jNQ77OYkJovJugjKRO-fPHjX8CB9@mail.gmail.com>
2010-07-16 0:44 ` Minchan Kim [this message]
2010-07-16 2:10 ` Question of kmap_atomic Nicolas Pitre
2010-07-16 2:31 ` Minchan Kim
2010-07-16 2:46 ` Nicolas Pitre
2010-07-16 2:52 ` Minchan Kim
2010-07-16 7:46 ` Russell King - ARM Linux
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