From: Kumar Gala <kumar.gala@freescale.com>
To: Josh Boyer <jwboyer@linux.vnet.ibm.com>
Cc: linuxppc-dev@ozlabs.org
Subject: Re: [PATCH 1/9] powerpc: Fix bogus cache flushing on all 40x and BookE processors v2
Date: Sat, 13 Dec 2008 17:49:03 -0600 [thread overview]
Message-ID: <1957A815-19D9-434C-9F46-8124D86C075F@freescale.com> (raw)
In-Reply-To: <20081211191503.1e8bbf18@zod.rchland.ibm.com>
On Dec 11, 2008, at 6:15 PM, Josh Boyer wrote:
> On Mon, 08 Dec 2008 16:39:52 +1100
> Benjamin Herrenschmidt <benh@kernel.crashing.org> wrote:
>
>> We were missing the CPU_FTR_NOEXECUTE bit in our cputable for all
>> these processors. The result is that update_mmu_cache() would flush
>> the cache for all pages mapped to userspace which is totally
>> unnecessary on those processors since we already handle flushing
>> on execute in the page fault path.
>>
>> This should provide a nice speed up ;-)
>>
>> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
>
> Acked-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
>
> Kumar, feel free to take this through your tree.
>
> josh
applied to next
- k
next prev parent reply other threads:[~2008-12-13 23:49 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-12-08 5:39 [PATCH 0/9] powerpc: Preliminary work to enable SMP BookE Benjamin Herrenschmidt
2008-12-08 5:39 ` [PATCH 1/9] powerpc: Fix bogus cache flushing on all 40x and BookE processors v2 Benjamin Herrenschmidt
2008-12-12 0:15 ` Josh Boyer
2008-12-13 23:49 ` Kumar Gala [this message]
2008-12-08 5:39 ` [PATCH 2/9] powerpc: Fix asm EMIT_BUG_ENTRY with !CONFIG_BUG Benjamin Herrenschmidt
2008-12-08 5:40 ` [PATCH 3/9] powerpc/4xx: Extended DCR support Benjamin Herrenschmidt
2008-12-08 20:30 ` Josh Boyer
2008-12-09 3:03 ` Benjamin Herrenschmidt
2008-12-08 5:40 ` [PATCH 4/9] powerpc: Add local_flush_tlb_mm() to SW loaded TLB implementations Benjamin Herrenschmidt
2008-12-08 5:40 ` [PATCH 5/9] powerpc: Split mmu_context handling Benjamin Herrenschmidt
2008-12-08 5:40 ` [PATCH 6/9] powerpc: Rework context management for CPUs with no hash table Benjamin Herrenschmidt
2008-12-08 5:40 ` [PATCH 7/9] powerpc: Rename tlb_32.c and tlb_64.c to tlb_hash32.c and tlb_hash64.c Benjamin Herrenschmidt
2008-12-08 5:40 ` [PATCH 8/9] powerpc: Introduce MMU features Benjamin Herrenschmidt
2008-12-08 5:40 ` [PATCH 9/9] powerpc: Add SMP support to no-hash TLB handling Benjamin Herrenschmidt
2008-12-08 22:32 ` Scott Wood
2008-12-09 1:47 ` Benjamin Herrenschmidt
2008-12-09 13:17 ` [PATCH 0/9] powerpc: Preliminary work to enable SMP BookE Kumar Gala
2008-12-09 20:12 ` Benjamin Herrenschmidt
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