summaryrefslogtreecommitdiffstats
path: root/kernel/arch/sh/include/asm/pgtable-2level.h
diff options
context:
space:
mode:
authorYunhong Jiang <yunhong.jiang@intel.com>2015-08-04 12:17:53 -0700
committerYunhong Jiang <yunhong.jiang@intel.com>2015-08-04 15:44:42 -0700
commit9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00 (patch)
tree1c9cafbcd35f783a87880a10f85d1a060db1a563 /kernel/arch/sh/include/asm/pgtable-2level.h
parent98260f3884f4a202f9ca5eabed40b1354c489b29 (diff)
Add the rt linux 4.1.3-rt3 as base
Import the rt linux 4.1.3-rt3 as OPNFV kvm base. It's from git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git linux-4.1.y-rt and the base is: commit 0917f823c59692d751951bf5ea699a2d1e2f26a2 Author: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Date: Sat Jul 25 12:13:34 2015 +0200 Prepare v4.1.3-rt3 Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> We lose all the git history this way and it's not good. We should apply another opnfv project repo in future. Change-Id: I87543d81c9df70d99c5001fbdf646b202c19f423 Signed-off-by: Yunhong Jiang <yunhong.jiang@intel.com>
Diffstat (limited to 'kernel/arch/sh/include/asm/pgtable-2level.h')
-rw-r--r--kernel/arch/sh/include/asm/pgtable-2level.h23
1 files changed, 23 insertions, 0 deletions
diff --git a/kernel/arch/sh/include/asm/pgtable-2level.h b/kernel/arch/sh/include/asm/pgtable-2level.h
new file mode 100644
index 000000000..19bd89db1
--- /dev/null
+++ b/kernel/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 */