https://github.com/torvalds/linux
Revision 5f39e6705faade2e89d119958a8c51b9b6e2c53c authored by Jon Mason on 03 October 2011, 14:50:20 UTC, committed by Linus Torvalds on 04 October 2011, 16:52:28 UTC
Add the ability to disable PCI-E MPS turning and using the BIOS
configured MPS defaults.  Due to the number of issues recently
discovered on some x86 chipsets, make this the default behavior.

Also, add the option for peer to peer DMA MPS configuration.  Peer to
peer DMA is outside the scope of this patch, but MPS configuration could
prevent it from working by having the MPS on one root port different
than the MPS on another.  To work around this, simply make the system
wide MPS the smallest possible value (128B).

Signed-off-by: Jon Mason <mason@myri.com>
Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
1 parent 05faadc
History
Tip revision: 5f39e6705faade2e89d119958a8c51b9b6e2c53c authored by Jon Mason on 03 October 2011, 14:50:20 UTC
PCI: Disable MPS configuration by default
Tip revision: 5f39e67
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arch
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drivers
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include
init
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kernel
lib
mm
net
samples
scripts
security
sound
tools
usr
virt
.gitignore -rw-r--r-- 1014 bytes
.mailmap -rw-r--r-- 4.1 KB
COPYING -rw-r--r-- 18.3 KB
CREDITS -rw-r--r-- 92.6 KB
Kbuild -rw-r--r-- 2.4 KB
Kconfig -rw-r--r-- 252 bytes
MAINTAINERS -rw-r--r-- 196.7 KB
Makefile -rw-r--r-- 52.3 KB
README -rw-r--r-- 17.0 KB
REPORTING-BUGS -rw-r--r-- 3.3 KB

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