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sparc64: Only support 4MB huge pages and 8KB base pages.

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Narrowing the scope of the page size configurations will make the
transparent hugepage changes much simpler.

In the end what we really want to do is have the kernel support multiple
huge page sizes and use whatever is appropriate as the context dictactes.

Signed-off-by: David S. Miller <davem@davemloft.net>
Cc: Andrea Arcangeli <aarcange@redhat.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Gerald Schaefer <gerald.schaefer@de.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
David Miller
2012-10-08 16:34:19 -07:00
committed by Linus Torvalds
parent d760afd4d2
commit 15b9350a17
6 changed files with 8 additions and 120 deletions
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12
arch/sparc/include/asm/page_64.h
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@@ -3,13 +3,7 @@
#include <linux/const.h>
#if defined(CONFIG_SPARC64_PAGE_SIZE_8KB)
#define PAGE_SHIFT 13
#elif defined(CONFIG_SPARC64_PAGE_SIZE_64KB)
#define PAGE_SHIFT 16
#else
#error No page size specified in kernel configuration
#endif
#define PAGE_SIZE (_AC(1,UL) << PAGE_SHIFT)
#define PAGE_MASK (~(PAGE_SIZE-1))
@@ -21,13 +15,7 @@
#define DCACHE_ALIASING_POSSIBLE
#endif
#if defined(CONFIG_HUGETLB_PAGE_SIZE_4MB)
#define HPAGE_SHIFT 22
#elif defined(CONFIG_HUGETLB_PAGE_SIZE_512K)
#define HPAGE_SHIFT 19
#elif defined(CONFIG_HUGETLB_PAGE_SIZE_64K)
#define HPAGE_SHIFT 16
#endif
#ifdef CONFIG_HUGETLB_PAGE
#define HPAGE_SIZE (_AC(1,UL) << HPAGE_SHIFT)