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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
..
bitops [PATCH] sched: likely profiling 2006-10-11 11:14:22 -07:00
4level-fixup.h [PATCH] Standardize pxx_page macros 2006-09-26 08:48:51 -07:00
Kbuild [PATCH] cleanup include/asm-generic/atomic.h 2006-12-07 08:39:45 -08:00
Kbuild.asm [PATCH] cleanup asm/setup.h userspace visibility 2006-12-07 08:39:46 -08:00
atomic.h [PATCH] cleanup include/asm-generic/atomic.h 2006-12-07 08:39:45 -08:00
audit_change_attr.h [PATCH] fix missing ifdefs in syscall classes hookup for generic targets 2006-09-22 17:48:56 -07:00
audit_dir_write.h [PATCH] fix missing ifdefs in syscall classes hookup for generic targets 2006-09-22 17:48:56 -07:00
audit_read.h
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audit_write.h
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bitops.h
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bug.h [PATCH] change WARN_ON back to "BUG: at ..." 2006-12-30 10:55:54 -08:00
cputime.h
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device.h Driver core: add dev_archdata to struct device 2006-12-01 14:52:01 -08:00
div64.h
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dma-mapping-broken.h [PATCH] one more iomap s390 build fix 2007-02-11 20:06:39 -08:00
dma-mapping.h [PATCH] Pass struct dev pointer to dma_cache_sync() 2006-12-07 08:39:41 -08:00
emergency-restart.h
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errno-base.h
…
errno.h
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fcntl.h
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futex.h [PATCH] mm: pagefault_{disable,enable}() 2006-12-07 08:39:21 -08:00
gpio.h [PATCH] GPIO core 2007-02-12 09:48:34 -08:00
ide_iops.h
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ioctl.h
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iomap.h
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ipc.h
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irq_regs.h IRQ: Maintain regs pointer globally rather than passing to IRQ handlers 2006-10-05 15:10:12 +01:00
libata-portmap.h Fix Maple PATA IRQ assignment. 2007-01-26 17:27:40 -05:00
local.h
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memory_model.h [PATCH] typeof __page_to_pfn with SPARSEMEM=y 2007-02-11 10:51:17 -08:00
mman.h [PATCH] Remove final references to deprecated "MAP_ANON" page protection flag 2007-02-11 10:51:17 -08:00
mutex-dec.h fix file specification in comments 2006-10-03 23:01:26 +02:00
mutex-null.h fix file specification in comments 2006-10-03 23:01:26 +02:00
mutex-xchg.h fix file specification in comments 2006-10-03 23:01:26 +02:00
page.h Revert "[PATCH] LOG2: Alter get_order() so that it can make use of ilog2() on a constant" 2007-03-06 19:38:01 -08:00
pci-dma-compat.h
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pci.h
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percpu.h [PATCH] Fix typo in "syntax error if percpu macros are incorrectly used" patch 2006-10-06 08:53:41 -07:00
pgtable-nopmd.h [PATCH] Standardize pxx_page macros 2006-09-26 08:48:51 -07:00
pgtable-nopud.h [PATCH] Standardize pxx_page macros 2006-09-26 08:48:51 -07:00
pgtable.h [PATCH] Proper fix for highmem kmap_atomic functions for VMI for 2.6.21 2007-04-08 19:47:55 -07:00
resource.h
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rtc.h fix file specification in comments 2006-10-03 23:01:26 +02:00
sections.h
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siginfo.h
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signal.h
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statfs.h
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termios.h [PATCH] tty: switch to ktermios 2006-12-08 08:28:57 -08:00
tlb.h fix file specification in comments 2006-10-03 23:01:26 +02:00
topology.h
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uaccess.h
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unaligned.h
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vmlinux.lds.h PCI: Fix multiple problems with VIA hardware 2006-12-20 10:54:43 -08:00
xor.h
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