diff options
| author | Dave Hansen | 2013-01-22 22:24:31 +0100 |
|---|---|---|
| committer | H. Peter Anvin | 2013-01-26 01:33:22 +0100 |
| commit | 4cbeb51b860c57ba8b2ae50c4016ee7a41f5fbd5 (patch) | |
| tree | bf51acd1c4e8c21b15e06fd87c646018efe5e0b2 /arch/x86/include/asm/pgtable_types.h | |
| parent | x86, mm: Make DEBUG_VIRTUAL work earlier in boot (diff) | |
| download | kernel-qcow2-linux-4cbeb51b860c57ba8b2ae50c4016ee7a41f5fbd5.tar.gz kernel-qcow2-linux-4cbeb51b860c57ba8b2ae50c4016ee7a41f5fbd5.tar.xz kernel-qcow2-linux-4cbeb51b860c57ba8b2ae50c4016ee7a41f5fbd5.zip | |
x86, mm: Pagetable level size/shift/mask helpers
I plan to use lookup_address() to walk the kernel pagetables
in a later patch. It returns a "pte" and the level in the
pagetables where the "pte" was found. The level is just an
enum and needs to be converted to a useful value in order to
do address calculations with it. These helpers will be used
in at least two places.
This also gives the anonymous enum a real name so that no one
gets confused about what they should be passing in to these
helpers.
"PTE_SHIFT" was chosen for naming consistency with the other
pagetable levels (PGD/PUD/PMD_SHIFT).
Cc: H. Peter Anvin <hpa@zytor.com>
Signed-off-by: Dave Hansen <dave@linux.vnet.ibm.com>
Link: http://lkml.kernel.org/r/20130122212431.405D3A8C@kernel.stglabs.ibm.com
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
Diffstat (limited to 'arch/x86/include/asm/pgtable_types.h')
| -rw-r--r-- | arch/x86/include/asm/pgtable_types.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/x86/include/asm/pgtable_types.h b/arch/x86/include/asm/pgtable_types.h index 3c32db8c539d..6c297e7998cc 100644 --- a/arch/x86/include/asm/pgtable_types.h +++ b/arch/x86/include/asm/pgtable_types.h @@ -331,7 +331,7 @@ extern void native_pagetable_init(void); struct seq_file; extern void arch_report_meminfo(struct seq_file *m); -enum { +enum pg_level { PG_LEVEL_NONE, PG_LEVEL_4K, PG_LEVEL_2M, |