diff options
| author | Nitin Gupta <nitin.m.gupta@oracle.com> | 2017-08-11 16:46:50 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2017-08-15 21:48:07 -0700 |
| commit | df7b2155bbe75525531e47c8a67ae4f1dbbae976 (patch) | |
| tree | 8a41a2304dc99e7fa024a5debef0ac9197231842 /arch/sparc/kernel | |
| parent | 44382b0195e608732b0bed14d51b5e5f79f46471 (diff) | |
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
Cc: Anthony Yznaga <anthony.yznaga@oracle.com>
Reviewed-by: Bob Picco <bob.picco@oracle.com>
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/head_64.S | 2 | ||||
| -rw-r--r-- | arch/sparc/kernel/tsb.S | 2 | ||||
| -rw-r--r-- | arch/sparc/kernel/vmlinux.lds.S | 5 |
3 files changed, 7 insertions, 2 deletions
diff --git a/arch/sparc/kernel/head_64.S b/arch/sparc/kernel/head_64.S index bf9a5acc8432..4de9fbd1a177 100644 --- a/arch/sparc/kernel/head_64.S +++ b/arch/sparc/kernel/head_64.S @@ -893,7 +893,6 @@ sparc64_boot_end: #include "misctrap.S" #include "syscalls.S" #include "helpers.S" -#include "hvcalls.S" #include "sun4v_tlb_miss.S" #include "sun4v_ivec.S" #include "ktlb.S" @@ -938,6 +937,7 @@ swapper_4m_tsb: ! 0x0000000000428000 +#include "hvcalls.S" #include "systbls_64.S" .data diff --git a/arch/sparc/kernel/tsb.S b/arch/sparc/kernel/tsb.S index db872dbfafe9..f74115364b1e 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 |