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| author | Borislav Petkov <bp@suse.de> | 2014-01-18 12:48:14 +0100 |
|---|---|---|
| committer | Matt Fleming <matt.fleming@intel.com> | 2014-03-04 16:16:17 +0000 |
| commit | ef6bea6ddf0e76077d0798e57b374015b23a837e (patch) | |
| tree | 262c82db081fe5ea6b3c1da63e6c9b930694a033 /arch/x86/include/asm/pgtable.h | |
| parent | 9b7d204982cf6e4e5b9b0f8bff151e48250cce58 (diff) | |
| download | linux-stable-ef6bea6ddf0e76077d0798e57b374015b23a837e.tar.gz linux-stable-ef6bea6ddf0e76077d0798e57b374015b23a837e.tar.bz2 linux-stable-ef6bea6ddf0e76077d0798e57b374015b23a837e.zip | |
x86, ptdump: Add the functionality to dump an arbitrary pagetable
With reusing the ->trampoline_pgd page table for mapping EFI regions in
order to use them after having switched to EFI virtual mode, it is very
useful to be able to dump aforementioned page table in dmesg. This adds
that functionality through the walk_pgd_level() interface which can be
called from somewhere else.
The original functionality of dumping to debugfs remains untouched.
Cc: Arjan van de Ven <arjan@linux.intel.com>
Signed-off-by: Borislav Petkov <bp@suse.de>
Tested-by: Toshi Kani <toshi.kani@hp.com>
Signed-off-by: Matt Fleming <matt.fleming@intel.com>
Diffstat (limited to 'arch/x86/include/asm/pgtable.h')
| -rw-r--r-- | arch/x86/include/asm/pgtable.h | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/arch/x86/include/asm/pgtable.h b/arch/x86/include/asm/pgtable.h index 5ad38ad07890..938ef1d0458e 100644 --- a/arch/x86/include/asm/pgtable.h +++ b/arch/x86/include/asm/pgtable.h @@ -15,9 +15,10 @@ : (prot)) #ifndef __ASSEMBLY__ - #include <asm/x86_init.h> +void ptdump_walk_pgd_level(struct seq_file *m, pgd_t *pgd); + /* * ZERO_PAGE is a global shared page that is always zero: used * for zero-mapped memory areas etc.. |