From: "Kirill A. Shutemov" <kirill@shutemov.name>
To: linux-arm-kernel@lists.infradead.org,
Russell King <linux@arm.linux.org.uk>
Cc: linux-kernel@vger.kernel.org,
Bityutskiy Artem <Artem.Bityutskiy@nokia.com>,
Koskinen Aaro <aaro.koskinen@nokia.com>,
"Kirill A. Shutemov" <kirill@shutemov.name>
Subject: Re: [PATCH v5 1/2] ARM: Pass IFSR register to do_PrefetchAbort()
Date: Thu, 1 Oct 2009 10:15:38 +0300 [thread overview]
Message-ID: <cc557aab0910010015i2e471c13mb4529409b3e68e45@mail.gmail.com> (raw)
In-Reply-To: <b833952fedbf24c4a16e0d79fe78019357e9652b.1253781660.git.kirill@shutemov.name>
On Thu, Sep 24, 2009 at 11:49 AM, Kirill A. Shutemov
<kirill@shutemov.name> wrote:
> Instruction fault status register, IFSR, was introduced on ARMv6 to
> provide status information about the last insturction fault. It
> needed for proper prefetch abort handling.
>
> Now we have three prefetch abort model:
>
> * legacy - for CPUs before ARMv6. They doesn't provide neither
> IFSR nor IFAR. We simulate IFSR with section translation fault
> status for them to generalize code;
> * ARMv6 - provides IFSR, but not IFAR;
> * ARMv7 - provides both IFSR and IFAR.
>
> Signed-off-by: Kirill A. Shutemov <kirill@shutemov.name>
Any chances to get it into 2.6.32?
prev parent reply other threads:[~2009-10-01 7:15 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-09-24 8:49 Kirill A. Shutemov
2009-09-24 8:49 ` [PATCH v5 2/2] ARM: Proper prefetch abort handling on ARMv6 and ARMv7 Kirill A. Shutemov
2009-10-01 7:15 ` Kirill A. Shutemov [this message]
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