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sparc64: Add 16GB hugepage support

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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>
This commit is contained in:
Nitin Gupta
2017-08-11 16:46:50 -07:00
committed by David S. Miller
parent 44382b0195
commit df7b2155bb
9 changed files with 158 additions and 32 deletions
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2
arch/sparc/kernel/head_64.S
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@@ -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