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| author |   Luiz Capitulino <lcapitulino@redhat.com> | 2014-12-12 16:55:18 -0800 |
|---|---|---|
| committer |   Linus Torvalds <torvalds@linux-foundation.org> | 2014-12-13 12:42:47 -0800 |
| commit | 27ec26ecdca956a32e89a22a148f1c16b5c0becf (patch) | |
| tree | 336152f8fd37d6daf5244e973947578a1708461b /Documentation/kernel-parameters.txt | |
| parent | memcg: turn memcg_kmem_skip_account into a bit field (diff) | |
| download | linux-dev-27ec26ecdca956a32e89a22a148f1c16b5c0becf.tar.xz linux-dev-27ec26ecdca956a32e89a22a148f1c16b5c0becf.zip | |
hugetlb: fix hugepages= entry in kernel-parameters.txt
The hugepages= entry in kernel-parameters.txt states that 1GB pages can
only be allocated at boot time and not freed afterwards. This is not
true since commit 944d9fec8d7a ("hugetlb: add support for gigantic page
allocation at runtime"), at least for x86_64.
Instead of adding arch-specifc observations to the hugepages= entry,
this commit just drops the out of date information. Further information
about arch-specific support and available features can be obtained in
the hugetlb documentation.
Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com>
Cc: Andi Kleen <andi@firstfloor.org>
Acked-by: David Rientjes <rientjes@google.com>
Cc: Rik van Riel <riel@redhat.com>
Cc: Yasuaki Ishimatsu <isimatu.yasuaki@jp.fujitsu.com>
Cc: Yinghai Lu <yinghai@kernel.org>
Cc: Davidlohr Bueso <dave@stgolabs.net>
Acked-by: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'Documentation/kernel-parameters.txt')
| -rw-r--r-- | Documentation/kernel-parameters.txt | 4 |
1 files changed, 1 insertions, 3 deletions
diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt index eacb2e0397ae..24539d1c7d25 100644 --- a/Documentation/kernel-parameters.txt +++ b/Documentation/kernel-parameters.txt @@ -1228,9 +1228,7 @@ bytes respectively. Such letter suffixes can also be entirely omitted. multiple times interleaved with hugepages= to reserve huge pages of different sizes. Valid pages sizes on x86-64 are 2M (when the CPU supports "pse") and 1G - (when the CPU supports the "pdpe1gb" cpuinfo flag) - Note that 1GB pages can only be allocated at boot time - using hugepages= and not freed afterwards. + (when the CPU supports the "pdpe1gb" cpuinfo flag). hvc_iucv= [S390] Number of z/VM IUCV hypervisor console (HVC) terminal devices. Valid values: 0..8 |