The patch titled
Subject: hugetlb: fix hugepages= entry in kernel-parameters.txt
has been added to the -mm tree. Its filename is
hugetlb-fix-hugepages=-entry-in-kernel-parameterstxt.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/hugetlb-fix-hugepages%3D-entry-in-kernel-parameterstxt.patch
echo and later at
echo http://ozlabs.org/~akpm/mmotm/broken-out/hugetlb-fix-hugepages%3D-entry-in-kernel-parameterstxt.patch
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------------------------------------------------------
From: Luiz Capitulino <lcapitulino@xxxxxxxxxx>
Subject: 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 944d9fec8d7aee, 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commit just drops the out of date information.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@xxxxxxxxxx>
Cc: Andi Kleen <andi@xxxxxxxxxxxxxx>
Cc: David Rientjes <rientjes@xxxxxxxxxx>
Cc: Rik van Riel <riel@xxxxxxxxxx>
Cc: Yasuaki Ishimatsu <isimatu.yasuaki@xxxxxxxxxxxxxx>
Cc: Yinghai Lu <yinghai@xxxxxxxxxx>
Cc: Davidlohr Bueso <dave@xxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
Documentation/kernel-parameters.txt | 4 +---
1 file changed, 1 insertion(+), 3 deletions(-)
diff -puN Documentation/kernel-parameters.txt~hugetlb-fix-hugepages=-entry-in-kernel-parameterstxt Documentation/kernel-parameters.txt
--- a/Documentation/kernel-parameters.txt~hugetlb-fix-hugepages=-entry-in-kernel-parameterstxt
+++ a/Documentation/kernel-parameters.txt
@@ -1228,9 +1228,7 @@ bytes respectively. Such letter suffixes
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
_
Patches currently in -mm which might be from lcapitulino@xxxxxxxxxx are
hugetlb-fix-hugepages=-entry-in-kernel-parameterstxt.patch
hugetlb-alloc_bootmem_huge_page-use-is_aligned.patch
hugetlb-hugetlb_register_all_nodes-add-__init-marker.patch
linux-next.patch
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