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authorYijing Wang <wangyijing@huawei.com>2013-01-23 07:29:06 -0500
committerBjorn Helgaas <bhelgaas@google.com>2013-01-31 11:07:33 -0500
commit8c8803c5968bd82ad3d65e8603c6bcf2d9674d83 (patch)
treea3ee5b9da1caab27872a5d47bc6ffd9a14cffd35 /Documentation/kernel-parameters.txt
parent1c531d82ee1a220ae7132ba0eb31edaf186b56d1 (diff)
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>
Diffstat (limited to 'Documentation/kernel-parameters.txt')
-rw-r--r--Documentation/kernel-parameters.txt6
1 files changed, 6 insertions, 0 deletions
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.
2248 the default. 2248 the default.
2249 off: Turn ECRC off 2249 off: Turn ECRC off
2250 on: Turn ECRC on. 2250 on: Turn ECRC on.
2251 hpiosize=nn[KMG] The fixed amount of bus space which is
2252 reserved for hotplug bridge's IO window.
2253 Default size is 256 bytes.
2254 hpmemsize=nn[KMG] The fixed amount of bus space which is
2255 reserved for hotplug bridge's memory window.
2256 Default size is 2 megabytes.
2251 realloc= Enable/disable reallocating PCI bridge resources 2257 realloc= Enable/disable reallocating PCI bridge resources
2252 if allocations done by BIOS are too small to 2258 if allocations done by BIOS are too small to
2253 accommodate resources required by all child 2259 accommodate resources required by all child