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authorYijing Wang <wangyijing@huawei.com>2013-01-23 16:29:06 +0400
committerBjorn Helgaas <bhelgaas@google.com>2013-01-31 20:07:33 +0400
commit8c8803c5968bd82ad3d65e8603c6bcf2d9674d83 (patch)
treea3ee5b9da1caab27872a5d47bc6ffd9a14cffd35 /Documentation/kernel-parameters.txt
parent1c531d82ee1a220ae7132ba0eb31edaf186b56d1 (diff)
downloadlinux-8c8803c5968bd82ad3d65e8603c6bcf2d9674d83.tar.xz
PCI: Document hpiosize= and hpmemsize= resource reservation parameters
Document PCI hotplug resource reservation parameters hpiosize and hpmemsize. These parameters override default hotplug I/O size (256 bytes) and default mem size (2M). Signed-off-by: Yijing Wang <wangyijing@huawei.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
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-rw-r--r--Documentation/kernel-parameters.txt6
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diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt
index 363e348bff9b..69f97a836600 100644
--- a/Documentation/kernel-parameters.txt
+++ b/Documentation/kernel-parameters.txt
@@ -2248,6 +2248,12 @@ bytes respectively. Such letter suffixes can also be entirely omitted.
the default.
off: Turn ECRC off
on: Turn ECRC on.
+ hpiosize=nn[KMG] The fixed amount of bus space which is
+ reserved for hotplug bridge's IO window.
+ Default size is 256 bytes.
+ hpmemsize=nn[KMG] The fixed amount of bus space which is
+ reserved for hotplug bridge's memory window.
+ Default size is 2 megabytes.
realloc= Enable/disable reallocating PCI bridge resources
if allocations done by BIOS are too small to
accommodate resources required by all child