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| author | Nitin Gupta <nitin.m.gupta@oracle.com> | 2017-07-29 20:42:18 +0200 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2017-08-10 07:12:19 +0200 |
| commit | f10bb00790dd3cf550f7ae6991c4d1a128802c00 (patch) | |
| tree | 3c02fcd72583fb36b3cb43115cb4a92c40f2c519 /arch/sparc/kernel | |
| parent | sparc64: Support huge PUD case in get_user_pages (diff) | |
| download | linux-f10bb00790dd3cf550f7ae6991c4d1a128802c00.tar.xz linux-f10bb00790dd3cf550f7ae6991c4d1a128802c00.zip | |
sparc64: Add 16GB hugepage support
Adds support for 16GB hugepage size. To use this page size
use kernel parameters as:
default_hugepagesz=16G hugepagesz=16G hugepages=10
Testing:
Tested with the stream benchmark which allocates 48G of
arrays backed by 16G hugepages and does RW operation on
them in parallel.
Orabug: 25362942
Signed-off-by: Nitin Gupta <nitin.m.gupta@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'arch/sparc/kernel')
| -rw-r--r-- | arch/sparc/kernel/tsb.S | 2 | ||||
| -rw-r--r-- | arch/sparc/kernel/vmlinux.lds.S | 5 |
2 files changed, 6 insertions, 1 deletions
diff --git a/arch/sparc/kernel/tsb.S b/arch/sparc/kernel/tsb.S index 07c0df924960..5f42ac099fcb 100644 --- a/arch/sparc/kernel/tsb.S +++ b/arch/sparc/kernel/tsb.S @@ -117,7 +117,7 @@ tsb_miss_page_table_walk_sun4v_fastpath: /* Valid PTE is now in %g5. */ #if defined(CONFIG_HUGETLB_PAGE) || defined(CONFIG_TRANSPARENT_HUGEPAGE) - sethi %uhi(_PAGE_PMD_HUGE), %g7 + sethi %uhi(_PAGE_PMD_HUGE | _PAGE_PUD_HUGE), %g7 sllx %g7, 32, %g7 andcc %g5, %g7, %g0 diff --git a/arch/sparc/kernel/vmlinux.lds.S b/arch/sparc/kernel/vmlinux.lds.S index 03b3d65d1266..34d37e6c2d06 100644 --- a/arch/sparc/kernel/vmlinux.lds.S +++ b/arch/sparc/kernel/vmlinux.lds.S @@ -154,6 +154,11 @@ SECTIONS *(.get_tick_patch) __get_tick_patch_end = .; } + .pud_huge_patch : { + __pud_huge_patch = .; + *(.pud_huge_patch) + __pud_huge_patch_end = .; + } PERCPU_SECTION(SMP_CACHE_BYTES) #ifdef CONFIG_JUMP_LABEL |