From: jason.mcmullan@netronome.com (Jason McMullan)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH 2/8] ARM: Implement read/write for ownership in the ARMv6 DMA cache ops
Date: Tue, 4 May 2010 13:04:35 -0400 [thread overview]
Message-ID: <o2md91d07041005041004v50aba49bydacf4971a59d413c@mail.gmail.com> (raw)
In-Reply-To: <20100504164426.26355.19161.stgit@e102109-lin.cambridge.arm.com>
On Tue, May 4, 2010 at 12:44 PM, Catalin Marinas
<catalin.marinas@arm.com> wrote:
> The Snoop Control Unit on the ARM11MPCore hardware does not detect the
> cache operations and the dma_cache_maint*() functions may leave stale
> cache entries on other CPUs. The solution implemented in this patch
> performs a Read or Write For Ownership in the ARMv6 DMA cache
> maintenance functions. These LDR/STR instructions change the cache line
> state to shared or exclusive so that the cache maintenance operation has
> the desired effect.
Is latter portion of this patch required only for SMP MPCore systems, or is
it also required for uniprocessor MPCore configurations?
--
Jason S. McMullan
Netronome Systems, Inc.
next prev parent reply other threads:[~2010-05-04 17:04 UTC|newest]
Thread overview: 64+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-05-04 16:44 [PATCH 0/8] Various patches for comments and upstream Catalin Marinas
2010-05-04 16:44 ` [PATCH 1/8] ARM: Improve the L2 cache performance when PL310 is used Catalin Marinas
2010-05-04 17:02 ` Jason McMullan
2010-05-05 16:07 ` Catalin Marinas
2010-05-04 16:44 ` [PATCH 2/8] ARM: Implement read/write for ownership in the ARMv6 DMA cache ops Catalin Marinas
2010-05-04 17:04 ` Jason McMullan [this message]
2010-05-05 16:23 ` Catalin Marinas
2010-05-05 13:26 ` George G. Davis
2010-05-06 14:40 ` Catalin Marinas
2010-05-06 15:57 ` George G. Davis
2010-05-12 12:51 ` Ronen Shitrit
2010-05-12 13:55 ` Catalin Marinas
2010-05-12 15:03 ` Ronen Shitrit
2010-05-12 18:48 ` Russell King - ARM Linux
2010-05-12 18:59 ` Russell King - ARM Linux
2010-05-12 20:00 ` Ronen Shitrit
2010-05-12 20:04 ` Russell King - ARM Linux
2010-05-12 20:19 ` Ronen Shitrit
2010-05-12 21:21 ` [PATCH 2/8] ARM: Implement read/write for ownership in theARMv6 " Catalin Marinas
2010-05-13 5:27 ` Ronen Shitrit
2010-05-13 8:26 ` Catalin Marinas
2010-05-13 13:54 ` George G. Davis
2010-05-13 14:15 ` Catalin Marinas
2010-05-13 20:34 ` George G. Davis
2010-05-14 16:29 ` Catalin Marinas
2010-05-14 16:42 ` Catalin Marinas
2010-05-15 1:26 ` George G. Davis
2010-05-16 6:28 ` Ronen Shitrit
2010-05-16 6:29 ` Ronen Shitrit
2010-05-16 15:01 ` Russell King - ARM Linux
2010-05-17 6:29 ` Ronen Shitrit
2010-05-17 6:57 ` Russell King - ARM Linux
2010-05-17 7:34 ` Ronen Shitrit
2010-05-17 7:43 ` Russell King - ARM Linux
2010-05-17 8:29 ` Ronen Shitrit
2010-05-17 8:57 ` Russell King - ARM Linux
2010-05-17 9:50 ` Ronen Shitrit
2010-05-17 10:03 ` Russell King - ARM Linux
2010-05-17 11:26 ` Ronen Shitrit
2010-05-17 11:31 ` Russell King - ARM Linux
2010-05-17 11:45 ` Catalin Marinas
2010-05-17 10:00 ` Catalin Marinas
2010-05-17 11:29 ` Ronen Shitrit
2010-05-17 11:42 ` Catalin Marinas
2010-05-17 12:04 ` Ronen Shitrit
2010-05-17 13:45 ` Catalin Marinas
2010-05-17 9:51 ` Catalin Marinas
2010-05-17 9:57 ` Catalin Marinas
2010-05-17 9:59 ` Ronen Shitrit
2010-05-17 11:08 ` Catalin Marinas
2010-05-17 11:27 ` Ronen Shitrit
2010-05-17 11:47 ` Catalin Marinas
2010-05-17 13:46 ` [PATCH 2/8] ARM: Implement read/write for ownership intheARMv6 " Catalin Marinas
2010-05-04 16:44 ` [PATCH 3/8] ARM: Align machine_desc.phys_io to a 1MB section Catalin Marinas
2010-05-04 16:44 ` [PATCH 4/8] ARM: Remove the domain switching on ARMv6k/v7 CPUs Catalin Marinas
2010-05-04 16:44 ` [PATCH 5/8] ARM: Fix the __arm_ioremap_caller() definition in nommu.c Catalin Marinas
2010-05-04 17:19 ` Russell King - ARM Linux
2010-05-04 16:44 ` [PATCH 6/8] ARM: Implement copy_to_user_page() for noMMU Catalin Marinas
2010-05-04 17:19 ` Russell King - ARM Linux
2010-05-04 16:44 ` [PATCH 7/8] ARM: Use the Inner Shareable I-cache and BTB ops on ARMv7 SMP Catalin Marinas
2010-05-28 18:50 ` Russell King - ARM Linux
2010-05-28 21:37 ` [PATCH 7/8] ARM: Use the Inner Shareable I-cache and BTB opson " Catalin Marinas
2010-05-04 16:44 ` [PATCH 8/8] ARM: Implement phys_mem_access_prot() to avoid attributes aliasing Catalin Marinas
2010-05-04 16:48 ` [PATCH 0/8] Various patches for comments and upstream Catalin Marinas
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