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| author | Bjorn Helgaas <bhelgaas@google.com> | 2017-12-01 18:50:33 +0100 |
|---|---|---|
| committer | Bjorn Helgaas <bhelgaas@google.com> | 2017-12-19 06:07:46 +0100 |
| commit | ffd2e8df8d138e7436e218e0a9d3447a18b888e6 (patch) | |
| tree | d2a9895eb988bfb44c8690630a2f2f5f6947e291 /Documentation | |
| parent | irqchip/i8259: Set I/O port resource types correctly (diff) | |
| download | linux-ffd2e8df8d138e7436e218e0a9d3447a18b888e6.tar.xz linux-ffd2e8df8d138e7436e218e0a9d3447a18b888e6.zip | |
resource: Set type of "reserve=" user-specified resources
When we reserve regions because the user specified a "reserve=" parameter,
set the resource type to either IORESOURCE_IO (for regions below 0x10000)
or IORESOURCE_MEM. The test for 0x10000 is just a heuristic; obviously
there can be memory below 0x10000 as well.
Improve documentation of the "reserve=" parameter.
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/admin-guide/kernel-parameters.txt | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/Documentation/admin-guide/kernel-parameters.txt b/Documentation/admin-guide/kernel-parameters.txt index 6571fbfdb2a1..78cdf6a637fc 100644 --- a/Documentation/admin-guide/kernel-parameters.txt +++ b/Documentation/admin-guide/kernel-parameters.txt @@ -3675,7 +3675,11 @@ [KNL, SMP] Set scheduler's default relax_domain_level. See Documentation/cgroup-v1/cpusets.txt. - reserve= [KNL,BUGS] Force the kernel to ignore some iomem area + reserve= [KNL,BUGS] Force kernel to ignore I/O ports or memory + Format: <base1>,<size1>[,<base2>,<size2>,...] + Reserve I/O ports or memory so the kernel won't use + them. If <base> is less than 0x10000, the region + is assumed to be I/O ports; otherwise it is memory. reservetop= [X86-32] Format: nn[KMG] |