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linux-next/arch/i386/mm
Zachary Amsden 49f1971051 [PATCH] Proper fix for highmem kmap_atomic functions for VMI for 2.6.21
Since lazy MMU batching mode still allows interrupts to enter, it is
possible for interrupt handlers to try to use kmap_atomic, which fails when
lazy mode is active, since the PTE update to highmem will be delayed.  The
best workaround is to issue an explicit flush in kmap_atomic_functions
case; this is the only way nested PTE updates can happen in the interrupt
handler.

Thanks to Jeremy Fitzhardinge for noting the bug and suggestions on a fix.

This patch gets reverted again when we start 2.6.22 and the bug gets fixed
differently.

Signed-off-by: Zachary Amsden <zach@vmware.com>
Cc: Andi Kleen <ak@muc.de>
Cc: Jeremy Fitzhardinge <jeremy@goop.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-04-08 19:47:55 -07:00
..
boot_ioremap.c [PATCH] paravirt: Add MMU virtualization to paravirt_ops 2006-12-07 02:14:08 +01:00
discontig.c [PATCH] i386: Remove extern declaration from mm/discontig.c, put in header. 2007-02-13 13:26:26 +01:00
extable.c [PATCH] i386: Allow a kernel not to be in ring 0 2006-09-26 10:52:39 +02:00
fault.c [PATCH] x86: simplify notify_page_fault() 2007-02-13 13:26:23 +01:00
highmem.c [PATCH] Proper fix for highmem kmap_atomic functions for VMI for 2.6.21 2007-04-08 19:47:55 -07:00
hugetlbpage.c [PATCH] shared page table for hugetlb page 2006-12-07 08:39:21 -08:00
init.c [PATCH] MM: page allocation hooks for VMI backend 2007-02-13 13:26:21 +01:00
ioremap.c [PATCH] Generic ioremap_page_range: i386 conversion 2006-10-01 00:39:31 -07:00
Makefile [PATCH] sparsemem memory model for i386 2005-06-23 09:45:05 -07:00
mmap.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
pageattr.c [PATCH] MM: page allocation hooks for VMI backend 2007-02-13 13:26:21 +01:00
pgtable.c [PATCH] i386: vMI backend for paravirt-ops 2007-02-13 13:26:21 +01:00