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| author | Nishanth Aravamudan <nacc@us.ibm.com> | 2011-02-10 09:10:47 +0000 |
|---|---|---|
| committer | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2011-03-04 18:19:05 +1100 |
| commit | 4e8b0cf46b2570331a4c4157d53906883c442a22 (patch) | |
| tree | 125c42222f64709d6073dc9d6ea3b9bc03624a27 /Documentation | |
| parent | 6edc642ebee87dfceb97050d51c5ab1fe539a597 (diff) | |
| download | linux-4e8b0cf46b2570331a4c4157d53906883c442a22.tar.gz linux-4e8b0cf46b2570331a4c4157d53906883c442a22.tar.bz2 linux-4e8b0cf46b2570331a4c4157d53906883c442a22.zip | |
powerpc/pseries: Add support for dynamic dma windows
If firmware allows us to map all of a partition's memory for DMA on a
particular bridge, create a 1:1 mapping of that memory. Add hooks for
dealing with hotplug events. Dynamic DMA windows can use larger than the
default page size, and we use the largest one possible.
Signed-off-by: Nishanth Aravamudan <nacc@us.ibm.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/kernel-parameters.txt | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt index f4a04c0c7edc..b245ce61ecb8 100644 --- a/Documentation/kernel-parameters.txt +++ b/Documentation/kernel-parameters.txt @@ -626,6 +626,10 @@ bytes respectively. Such letter suffixes can also be entirely omitted. disable= [IPV6] See Documentation/networking/ipv6.txt. + disable_ddw [PPC/PSERIES] + Disable Dynamic DMA Window support. Use this if + to workaround buggy firmware. + disable_ipv6= [IPV6] See Documentation/networking/ipv6.txt. |