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authorDavid S. Miller <davem@davemloft.net>2008-07-17 23:43:55 -0700
committerDavid S. Miller <davem@davemloft.net>2008-07-17 23:44:53 -0700
commitf7fe93344fd3f4ccd406a35f751a61b77f94b0fc (patch)
tree2d164e040f6acde923147a53e5c92fa0ca0cf0ec /include/asm-sparc
parentd172ad18f9914f70c761a6cad470efc986d5e07e (diff)
sparc64: Remove 4MB and 512K base page size options.
Adrian Bunk reported that enabling 4MB page size breaks the build. The problem is that MAX_ORDER combined with the page shift exceeds the SECTION_SIZE_BITS we use in asm-sparc64/sparsemem.h There are several ways I suppose we could work around this. For one we could define a CONFIG_FORCE_MAX_ZONEORDER to decrease MAX_ORDER in these higher page size cases. But I also know that these page size cases are broken wrt. TLB miss handling especially on pre-hypervisor systems, and there isn't an easy way to fix that. These options were meant to be fun experimental hacks anyways, and only 8K and 64K make any sense to support. So remove 512K and 4M base page size support. Of course, we still support these page sizes for huge pages. Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/asm-sparc')
-rw-r--r--include/asm-sparc/mmu_64.h4
-rw-r--r--include/asm-sparc/page_64.h4
-rw-r--r--include/asm-sparc/pgtable_64.h6
3 files changed, 0 insertions, 14 deletions
diff --git a/include/asm-sparc/mmu_64.h b/include/asm-sparc/mmu_64.h
index 8abc58f0f9d..9067dc50053 100644
--- a/include/asm-sparc/mmu_64.h
+++ b/include/asm-sparc/mmu_64.h
@@ -34,10 +34,6 @@
#define CTX_PGSZ_BASE CTX_PGSZ_8KB
#elif defined(CONFIG_SPARC64_PAGE_SIZE_64KB)
#define CTX_PGSZ_BASE CTX_PGSZ_64KB
-#elif defined(CONFIG_SPARC64_PAGE_SIZE_512KB)
-#define CTX_PGSZ_BASE CTX_PGSZ_512KB
-#elif defined(CONFIG_SPARC64_PAGE_SIZE_4MB)
-#define CTX_PGSZ_BASE CTX_PGSZ_4MB
#else
#error No page size specified in kernel configuration
#endif
diff --git a/include/asm-sparc/page_64.h b/include/asm-sparc/page_64.h
index 93f0881b766..a8a2bba032c 100644
--- a/include/asm-sparc/page_64.h
+++ b/include/asm-sparc/page_64.h
@@ -7,10 +7,6 @@
#define PAGE_SHIFT 13
#elif defined(CONFIG_SPARC64_PAGE_SIZE_64KB)
#define PAGE_SHIFT 16
-#elif defined(CONFIG_SPARC64_PAGE_SIZE_512KB)
-#define PAGE_SHIFT 19
-#elif defined(CONFIG_SPARC64_PAGE_SIZE_4MB)
-#define PAGE_SHIFT 22
#else
#error No page size specified in kernel configuration
#endif
diff --git a/include/asm-sparc/pgtable_64.h b/include/asm-sparc/pgtable_64.h
index 78d5594964a..bb9ec2cce35 100644
--- a/include/asm-sparc/pgtable_64.h
+++ b/include/asm-sparc/pgtable_64.h
@@ -161,12 +161,6 @@
#elif PAGE_SHIFT == 16
#define _PAGE_SZBITS_4U _PAGE_SZ64K_4U
#define _PAGE_SZBITS_4V _PAGE_SZ64K_4V
-#elif PAGE_SHIFT == 19
-#define _PAGE_SZBITS_4U _PAGE_SZ512K_4U
-#define _PAGE_SZBITS_4V _PAGE_SZ512K_4V
-#elif PAGE_SHIFT == 22
-#define _PAGE_SZBITS_4U _PAGE_SZ4MB_4U
-#define _PAGE_SZBITS_4V _PAGE_SZ4MB_4V
#else
#error Wrong PAGE_SHIFT specified
#endif