Commit Graph

7 Commits

Author SHA1 Message Date
Catalin Marinas 141fa40cff [ARM] 3356/1: Workaround for the ARM1136 I-cache invalidation problem
Patch from Catalin Marinas

ARM1136 erratum 371025 (category 2) specifies that, under rare
conditions, an invalidate I-cache by MVA (line or range) operation can
fail to invalidate a cache line. The recommended workaround is to
either invalidate the entire I-cache or invalidate the range by
set/way rather than MVA.

Note that for a 16K cache size, invalidating a 4K page by set/way is
equivalent to invalidating the entire I-cache.

Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-03-10 22:26:47 +00:00
Russell King df2f5e721e [ARM SMP] Disable lazy flush_dcache_page for SMP
Lazy flush_dcache_page() causes userspace instability on SMP
platforms, so disable it for now.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2005-11-30 16:02:54 +00:00
Catalin Marinas 481467d6fa [ARM] 2939/1: Fix compilation error in arch/arm/mm/flush.c
Patch from Catalin Marinas

When CONFIG_CPU_CACHE_VIPT is defined, the flush_pfn_alias() function is
implicitely declared and it later conflicts with its actual definition.
This patch moves the function definition to the beginning of the file.

Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2005-09-30 16:07:04 +01:00
Russell King d7b6b35894 [ARM] Fix ARMv6 VIPT cache >= 32K
This adds the necessary changes to ensure that we flush the
caches correctly with aliasing VIPT caches.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2005-09-08 15:32:23 +01:00
Russell King 8830f04a09 [PATCH] ARM: Fix delayed dcache flush for ARMv6 non-aliasing caches
flush_dcache_page() did nothing for these caches, but since they
suffer from I/D cache coherency issues, we need to ensure that data
is written back to RAM.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2005-06-20 09:51:03 +01:00
Russell King 8d802d28c2 [PATCH] ARM: Add V6 aliasing cache flush
Add cache flushing support for aliased V6 caches to
flush_dcache_page.

Signed-off-by: Russell King <rmk@arm.linux.org.uk>
2005-05-10 17:31:43 +01:00
Linus Torvalds 1da177e4c3 Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!
2005-04-16 15:20:36 -07:00