From: Will Deacon <will.deacon@arm.com>
Date: Tue, 21 Aug 2012 14:33:19 +0000 (+0100)
Subject: ARM: cacheflush: don't round address range up to nearest page
X-Git-Tag: v3.12-rc1~128^2^3^2~1
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=d9524dc32cab52714dee0c8e59c7437ee33a239a;p=pandora-kernel.git

ARM: cacheflush: don't round address range up to nearest page

The flush_cache_user_range macro takes a pair of addresses describing
the start and end of the virtual address range to flush. Due to an
accidental oversight when flush_cache_range_user was introduced, the
address range was rounded up so that the start and end addresses were
page-aligned.

For historical reference, the interesting commits in history.git are:

10eacf1775e1 ("[ARM] Clean up ARM cache handling interfaces (part 1)")
71432e79b76b ("[ARM] Add flush_cache_user_page() for sys_cacheflush()")

This patch removes the alignment code, reducing the amount of flushing
required for ranges that are not an exact multiple of PAGE_SIZE.

Reviewed-by: Catalin Marinas <catalin.marinas@arm.com>
Reported-by: Jonathan Austin <jonathan.austin@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
---

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