sparc64: Only support 4MB huge pages and 8KB base pages.
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>
diff --git a/arch/sparc/mm/init_64.c b/arch/sparc/mm/init_64.c
index 7a9b788..809eecf 100644
--- a/arch/sparc/mm/init_64.c
+++ b/arch/sparc/mm/init_64.c
@@ -276,7 +276,6 @@
}
unsigned long _PAGE_ALL_SZ_BITS __read_mostly;
-unsigned long _PAGE_SZBITS __read_mostly;
static void flush_dcache(unsigned long pfn)
{
@@ -2275,8 +2274,7 @@
__ACCESS_BITS_4U | _PAGE_E_4U);
#ifdef CONFIG_DEBUG_PAGEALLOC
- kern_linear_pte_xor[0] = (_PAGE_VALID | _PAGE_SZBITS_4U) ^
- 0xfffff80000000000UL;
+ kern_linear_pte_xor[0] = _PAGE_VALID ^ 0xfffff80000000000UL;
#else
kern_linear_pte_xor[0] = (_PAGE_VALID | _PAGE_SZ4MB_4U) ^
0xfffff80000000000UL;
@@ -2287,7 +2285,6 @@
for (i = 1; i < 4; i++)
kern_linear_pte_xor[i] = kern_linear_pte_xor[0];
- _PAGE_SZBITS = _PAGE_SZBITS_4U;
_PAGE_ALL_SZ_BITS = (_PAGE_SZ4MB_4U | _PAGE_SZ512K_4U |
_PAGE_SZ64K_4U | _PAGE_SZ8K_4U |
_PAGE_SZ32MB_4U | _PAGE_SZ256MB_4U);
@@ -2324,8 +2321,7 @@
_PAGE_CACHE = _PAGE_CACHE_4V;
#ifdef CONFIG_DEBUG_PAGEALLOC
- kern_linear_pte_xor[0] = (_PAGE_VALID | _PAGE_SZBITS_4V) ^
- 0xfffff80000000000UL;
+ kern_linear_pte_xor[0] = _PAGE_VALID ^ 0xfffff80000000000UL;
#else
kern_linear_pte_xor[0] = (_PAGE_VALID | _PAGE_SZ4MB_4V) ^
0xfffff80000000000UL;
@@ -2339,7 +2335,6 @@
pg_iobits = (_PAGE_VALID | _PAGE_PRESENT_4V | __DIRTY_BITS_4V |
__ACCESS_BITS_4V | _PAGE_E_4V);
- _PAGE_SZBITS = _PAGE_SZBITS_4V;
_PAGE_ALL_SZ_BITS = (_PAGE_SZ16GB_4V | _PAGE_SZ2GB_4V |
_PAGE_SZ256MB_4V | _PAGE_SZ32MB_4V |
_PAGE_SZ4MB_4V | _PAGE_SZ512K_4V |
diff --git a/arch/sparc/mm/tsb.c b/arch/sparc/mm/tsb.c
index c52add7..70e50ea 100644
--- a/arch/sparc/mm/tsb.c
+++ b/arch/sparc/mm/tsb.c
@@ -90,29 +90,12 @@
spin_unlock_irqrestore(&mm->context.lock, flags);
}
-#if defined(CONFIG_SPARC64_PAGE_SIZE_8KB)
#define HV_PGSZ_IDX_BASE HV_PGSZ_IDX_8K
#define HV_PGSZ_MASK_BASE HV_PGSZ_MASK_8K
-#elif defined(CONFIG_SPARC64_PAGE_SIZE_64KB)
-#define HV_PGSZ_IDX_BASE HV_PGSZ_IDX_64K
-#define HV_PGSZ_MASK_BASE HV_PGSZ_MASK_64K
-#else
-#error Broken base page size setting...
-#endif
#ifdef CONFIG_HUGETLB_PAGE
-#if defined(CONFIG_HUGETLB_PAGE_SIZE_64K)
-#define HV_PGSZ_IDX_HUGE HV_PGSZ_IDX_64K
-#define HV_PGSZ_MASK_HUGE HV_PGSZ_MASK_64K
-#elif defined(CONFIG_HUGETLB_PAGE_SIZE_512K)
-#define HV_PGSZ_IDX_HUGE HV_PGSZ_IDX_512K
-#define HV_PGSZ_MASK_HUGE HV_PGSZ_MASK_512K
-#elif defined(CONFIG_HUGETLB_PAGE_SIZE_4MB)
#define HV_PGSZ_IDX_HUGE HV_PGSZ_IDX_4MB
#define HV_PGSZ_MASK_HUGE HV_PGSZ_MASK_4MB
-#else
-#error Broken huge page size setting...
-#endif
#endif
static void setup_tsb_params(struct mm_struct *mm, unsigned long tsb_idx, unsigned long tsb_bytes)