From: linux@arm.linux.org.uk (Russell King - ARM Linux)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH 1/5] ARM: pgtable: switch order of Linux vs hardware page tables
Date: Fri, 26 Nov 2010 11:38:25 +0000 [thread overview]
Message-ID: <20101126113825.GK9310@n2100.arm.linux.org.uk> (raw)
In-Reply-To: <AANLkTik043UX-cXyriVAwzFTNNTtCTcxYd6VN_gYqCFe@mail.gmail.com>
On Fri, Nov 19, 2010 at 11:48:31AM +0000, Catalin Marinas wrote:
> On 17 November 2010 17:28, Russell King - ARM Linux
> <linux@arm.linux.org.uk> wrote:
> > --- a/arch/arm/mm/proc-v7.S
> > +++ b/arch/arm/mm/proc-v7.S
> > @@ -158,7 +156,7 @@ ENTRY(cpu_v7_set_pte_ext)
> > ? ? ? ?tstne ? r1, #L_PTE_PRESENT
> > ? ? ? ?moveq ? r3, #0
> >
> > - ? ? ? str ? ? r3, [r0]
> > + ? ? ? str ? ? r3, [r0, #2048]!
>
> Thumb-2 build gives "offset out of range". We need to do a separate
> ADD for this case.
Do we have any clues about the typical timing of:
str r3, [r0, #2048]!
mcr p15, 0, r0, c7, c10, 1
vs:
add r0, r0, #2048
str r3, [r0]
mcr p15, 0, r0, c7, c10, 1
or
str r3, [r0, #2048]
add r0, r0, #2048
mcr p15, 0, r0, c7, c10, 1
on ARMv7?
next prev parent reply other threads:[~2010-11-26 11:38 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-11-17 17:27 [PATCH 0/5] Clean up page tables Russell King - ARM Linux
2010-11-17 17:28 ` [PATCH 1/5] ARM: pgtable: switch order of Linux vs hardware " Russell King - ARM Linux
2010-11-18 16:59 ` Catalin Marinas
2010-11-18 17:38 ` Catalin Marinas
2010-11-18 17:18 ` Catalin Marinas
2010-11-19 11:48 ` Catalin Marinas
2010-11-26 11:38 ` Russell King - ARM Linux [this message]
2010-11-26 14:41 ` Catalin Marinas
2010-11-17 17:28 ` [PATCH 2/5] ARM: pgtable: directly pass pgd/pmd/pte to their error functions Russell King - ARM Linux
2010-11-17 17:29 ` [PATCH 3/5] ARM: pgtable: introduce pteval_t to represent a pte value Russell King - ARM Linux
2010-11-18 10:59 ` Catalin Marinas
2010-11-19 14:23 ` Catalin Marinas
2010-11-19 14:27 ` Catalin Marinas
2010-11-17 17:29 ` [PATCH 4/5] ARM: pgtable: invert L_PTE_EXEC to L_PTE_XN Russell King - ARM Linux
2010-11-17 17:29 ` [PATCH 5/5] ARM: pgtable: provide RDONLY page table bit rather than WRITE bit Russell King - ARM Linux
2010-11-19 12:00 ` [PATCH 0/5] Clean up page tables Catalin Marinas
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