imrcpan/erofs-linux
1
0 Fork 0
mirror of git://git.kernel.org/pub/scm/linux/kernel/git/xiang/erofs.git synced 2026-11-08 18:43:21 +01:00
Code Issues Packages Projects Releases Wiki Activity

powerpc: reserve fixmap entries for early debug

Browse Source 
Add a set of entries to the fixmap table to allow usage of known
reserved virtual address space by early debug code.

The address space reserved is the top 128K of the 32-bit address
space. This allows, if required, the use of a BAT to do the mappings.

Signed-off-by: Albert Herranz <[email protected]>
Acked-by: Benjamin Herrenschmidt <[email protected]>
Signed-off-by: Grant Likely <[email protected]>
This commit is contained in:
Albert Herranz authored and Grant Likely committed 2009-12-12 22:24:30 -07:00
1 parent 08b95a7adb
commit b8e8efaa86
1 file changed
+3
Download Patch File Download Diff File Expand all files Collapse all files
arch/powerpc/include/asm/fixmap.h
+3
View File
@@ -44,6 +44,9 @@
*/
enum fixed_addresses {
FIX_HOLE,
/* reserve the top 128K for early debugging purposes */
FIX_EARLY_DEBUG_TOP = FIX_HOLE,
FIX_EARLY_DEBUG_BASE = FIX_EARLY_DEBUG_TOP+((128*1024)/PAGE_SIZE)-1,
#ifdef CONFIG_HIGHMEM
FIX_KMAP_BEGIN, /* reserved pte's for temporary kernel mappings */
FIX_KMAP_END = FIX_KMAP_BEGIN+(KM_TYPE_NR*NR_CPUS)-1,