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authorLinus Torvalds <torvalds@linux-foundation.org>2010-02-26 16:54:27 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2010-02-26 16:54:27 -0800
commit64d497f55379b1e320a08ec2426468d96f5642ec (patch)
tree22b9ab3c5e69c5cc2728cbc2ca7fc7623beef8f1 /arch/sh/include/asm/pgtable-2level.h
parent37d4008484977f60d5d37499a2670c79b214dd46 (diff)
parentb5f5fe80fa98a60daa0fa94512d1599b1e26674c (diff)
Merge git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-2.6: (187 commits) sh: remove dead LED code for migo-r and ms7724se sh: ecovec build fix for CONFIG_I2C=n sh: ecovec r-standby support sh: ms7724se r-standby support sh: SH-Mobile R-standby register save/restore clocksource: Fix up a registration/IRQ race in the sh drivers. sh: ms7724: modify scan_timing for KEYSC sh: ms7724: Add sh_sir support sh: mach-ecovec24: Add sh_sir support sh: wire up SET/GET_UNALIGN_CTL. sh: allow alignment fault mode to be configured at kernel boot. sh: sh7724: Update FSI/SPU2 clock sh: always enable sh7724 vpu_clk and set to 166MHz on Ecovec sh: add sh7724 kick callback to clk_div4_table sh: introduce struct clk_div4_table sh: clock-cpg div4 set_rate() shift fix sh: Turn on speculative return for SH7785 and SH7786 sh: Merge legacy and dynamic PMB modes. sh: Use uncached I/O helpers in PMB setup. sh: Provide uncached I/O helpers. ...
Diffstat (limited to 'arch/sh/include/asm/pgtable-2level.h')
-rw-r--r--arch/sh/include/asm/pgtable-2level.h23
1 files changed, 23 insertions, 0 deletions
diff --git a/arch/sh/include/asm/pgtable-2level.h b/arch/sh/include/asm/pgtable-2level.h
new file mode 100644
index 000000000000..19bd89db17e7
--- /dev/null
+++ b/arch/sh/include/asm/pgtable-2level.h
@@ -0,0 +1,23 @@
+#ifndef __ASM_SH_PGTABLE_2LEVEL_H
+#define __ASM_SH_PGTABLE_2LEVEL_H
+
+#include <asm-generic/pgtable-nopmd.h>
+
+/*
+ * traditional two-level paging structure
+ */
+#define PAGETABLE_LEVELS 2
+
+/* PTE bits */
+#define PTE_MAGNITUDE 2 /* 32-bit PTEs */
+
+#define PTE_SHIFT PAGE_SHIFT
+#define PTE_BITS (PTE_SHIFT - PTE_MAGNITUDE)
+
+/* PGD bits */
+#define PGDIR_SHIFT (PTE_SHIFT + PTE_BITS)
+
+#define PTRS_PER_PGD (PAGE_SIZE / (1 << PTE_MAGNITUDE))
+#define USER_PTRS_PER_PGD (TASK_SIZE/PGDIR_SIZE)
+
+#endif /* __ASM_SH_PGTABLE_2LEVEL_H */