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05 April 2024, 19:05:47 UTC
Revision 8dab5241d06bfc9ee141ea78c56cde5070d7460d authored by Benjamin Herrenschmidt on 16 June 2007, 17:16:12 UTC, committed by Linus Torvalds on 16 June 2007, 20:16:16 UTC 
Rework ptep_set_access_flags and fix sun4c
 
Some changes done a while ago to avoid pounding on ptep_set_access_flags and
update_mmu_cache in some race situations break sun4c which requires
update_mmu_cache() to always be called on minor faults.

This patch reworks ptep_set_access_flags() semantics, implementations and
callers so that it's now responsible for returning whether an update is
necessary or not (basically whether the PTE actually changed).  This allow
fixing the sparc implementation to always return 1 on sun4c.

[akpm@linux-foundation.org: fixes, cleanups]
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Hugh Dickins <hugh@veritas.com>
Cc: David Miller <davem@davemloft.net>
Cc: Mark Fortescue <mark@mtfhpc.demon.co.uk>
Acked-by: William Lee Irwin III <wli@holomorphy.com>
Cc: "Luck, Tony" <tony.luck@intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
1 parent 679ce0a
History
Tip revision: 8dab5241d06bfc9ee141ea78c56cde5070d7460d authored by Benjamin Herrenschmidt on 16 June 2007, 17:16:12 UTC
Rework ptep_set_access_flags and fix sun4c
Tip revision: 8dab524
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.gitignore -rw-r--r-- 572 bytes
.mailmap -rw-r--r-- 3.6 KB
COPYING -rw-r--r-- 18.3 KB
CREDITS -rw-r--r-- 89.3 KB
Kbuild -rw-r--r-- 1.5 KB
MAINTAINERS -rw-r--r-- 87.9 KB
Makefile -rw-r--r-- 49.2 KB
README -rw-r--r-- 16.5 KB
REPORTING-BUGS -rw-r--r-- 3.0 KB

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