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David S. Miller c2a5a46be4 [SPARC64]: Fix for Niagara memory corruption. 
On some sun4v systems, after netboot the ethernet controller and it's
DMA mappings can be left active.  The net result is that the kernel
can end up using memory the ethernet controller will continue to DMA
into, resulting in corruption.

To deal with this, we are more careful about importing IOMMU
translations which OBP has left in the IO-TLB.  If the mapping maps
into an area the firmware claimed was free and available memory for
the kernel to use, we demap instead of import that IOMMU entry.

This is going to cause the network chip to take a PCI master abort on
the next DMA it attempts, if it has been left going like this.  All
tests show that this is handled properly by the PCI layer and the e1000
drivers.

Signed-off-by: David S. Miller <davem@davemloft.net>
2006-06-23 23:15:21 -07:00
..
acpi Merge branch 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-acpi-2.6 2006-06-23 07:52:36 -07:00
asm-alpha [PATCH] adjust handle_IRR_event() return type 2006-06-23 07:43:08 -07:00
asm-arm [PATCH] adjust handle_IRR_event() return type 2006-06-23 07:43:08 -07:00
asm-arm26 [PATCH] adjust handle_IRR_event() return type 2006-06-23 07:43:08 -07:00
asm-cris Remove unneeded _syscallX macros from user view in asm-*/unistd.h 2006-04-29 01:51:47 +01:00
asm-frv [PATCH] frv: clean frv unistd.h 2006-06-23 07:42:55 -07:00
asm-generic [PATCH] squash duplicate page_to_pfn and pfn_to_page 2006-06-23 07:42:47 -07:00
asm-h8300 [PATCH] adjust handle_IRR_event() return type 2006-06-23 07:43:08 -07:00
asm-i386 Merge branch 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-acpi-2.6 2006-06-23 07:52:36 -07:00
asm-ia64 Auto-update from upstream 2006-06-23 13:46:23 -07:00
asm-m32r [PATCH] vgacon: make VGA_MAP_MEM take size, remove extra use 2006-06-22 15:05:58 -07:00
asm-m68k [PATCH] adjust handle_IRR_event() return type 2006-06-23 07:43:08 -07:00
asm-m68knommu [PATCH] adjust handle_IRR_event() return type 2006-06-23 07:43:08 -07:00
asm-mips [PATCH] Au1550/1200: add missing PSC #define's, make OSS driver use the proper ones 2006-06-23 07:42:56 -07:00
asm-parisc [PATCH] Delete unused definitions of kvaddr_to_nid 2006-06-23 07:42:52 -07:00
asm-powerpc Merge git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc 2006-06-22 22:11:30 -07:00
asm-ppc Merge git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc 2006-06-22 22:11:30 -07:00
asm-s390 [PATCH] adjust handle_IRR_event() return type 2006-06-23 07:43:08 -07:00
asm-sh Remove unneeded _syscallX macros from user view in asm-*/unistd.h 2006-04-29 01:51:47 +01:00
asm-sh64 Remove unneeded _syscallX macros from user view in asm-*/unistd.h 2006-04-29 01:51:47 +01:00
asm-sparc [SBUS]: Start cleaning up generic sbus support layer. 2006-06-23 23:15:00 -07:00
asm-sparc64 [SPARC64]: Fix for Niagara memory corruption. 2006-06-23 23:15:21 -07:00
asm-um Merge git://git.infradead.org/hdrcleanup-2.6 2006-06-20 15:10:08 -07:00
asm-v850 [PATCH] adjust handle_IRR_event() return type 2006-06-23 07:43:08 -07:00
asm-x86_64 Merge branch 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-acpi-2.6 2006-06-23 07:52:36 -07:00
asm-xtensa [PATCH] xtensa: remove verify_area macros 2006-06-23 07:43:02 -07:00
keys
linux Merge branch 'upstream-linus' of master.kernel.org:/pub/scm/linux/kernel/git/jgarzik/libata-dev 2006-06-23 15:58:44 -07:00
math-emu
media Revert include/media changes: Mauro says those ioctls are only used in-kernel(!) 2006-05-06 19:47:57 +01:00
mtd Merge git://git.infradead.org/hdrcleanup-2.6 2006-06-20 15:10:08 -07:00
net [NET]: fix net-core kernel-doc 2006-06-23 02:07:42 -07:00
pcmcia Don't include linux/config.h from anywhere else in include/ 2006-04-26 12:56:16 +01:00
rdma IB/uverbs: Don't serialize with ib_uverbs_idr_mutex 2006-06-17 20:44:49 -07:00
rxrpc
scsi Merge branch 'master' into upstream 2006-06-22 22:11:56 -04:00
sound [ALSA] version 1.0.12rc1 2006-06-22 21:35:11 +02:00
video Don't include linux/config.h from anywhere else in include/ 2006-04-26 12:56:16 +01:00