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| author |   Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> | 2017-07-28 10:31:26 +0530 |
|---|---|---|
| committer |   Michael Ellerman <mpe@ellerman.id.au> | 2017-08-16 14:56:12 +1000 |
| commit | 79cc38ded1e1ac86e69c90f604efadd50b0b3762 (patch) | |
| tree | b7ec6f74be217b755dfa66908a84e70fed3a0cf3 /arch/powerpc/mm/init_32.c | |
| parent | mm/hugetlb: Allow arch to override and call the weak function (diff) | |
| download | linux-dev-79cc38ded1e1ac86e69c90f604efadd50b0b3762.tar.xz linux-dev-79cc38ded1e1ac86e69c90f604efadd50b0b3762.zip | |
powerpc/mm/hugetlb: Add support for reserving gigantic huge pages via kernel command line
With commit aa888a74977a8 ("hugetlb: support larger than MAX_ORDER") we added
support for allocating gigantic hugepages via kernel command line. Switch
ppc64 arch specific code to use that.
W.r.t FSL support, we now limit our allocation range using BOOTMEM_ALLOC_ACCESSIBLE.
We use the kernel command line to do reservation of hugetlb pages on powernv
platforms. On pseries hash mmu mode the supported gigantic huge page size is
16GB and that can only be allocated with hypervisor assist. For pseries the
command line option doesn't do the allocation. Instead pseries does gigantic
hugepage allocation based on hypervisor hint that is specified via
"ibm,expected#pages" property of the memory node.
Cc: Scott Wood <oss@buserror.net>
Cc: Christophe Leroy <christophe.leroy@c-s.fr>
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Diffstat (limited to 'arch/powerpc/mm/init_32.c')
| -rw-r--r-- | arch/powerpc/mm/init_32.c | 2 |
1 files changed, 0 insertions, 2 deletions
diff --git a/arch/powerpc/mm/init_32.c b/arch/powerpc/mm/init_32.c index 7d5fee1bb116..6419b33ca309 100644 --- a/arch/powerpc/mm/init_32.c +++ b/arch/powerpc/mm/init_32.c @@ -138,8 +138,6 @@ void __init MMU_init(void) * Reserve gigantic pages for hugetlb. This MUST occur before * lowmem_end_addr is initialized below. */ - reserve_hugetlb_gpages(); - if (memblock.memory.cnt > 1) { #ifndef CONFIG_WII memblock_enforce_memory_limit(memblock.memory.regions[0].size); |