leandrof/linux
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

s390/mm: introduce defines to reflect the hardware mmu

Browse Source 
Add various defines like e.g. _REGION1_SHIFT to reflect the hardware
mmu. We have quite a bit code that does not make use of the Linux
memory management primitives but directly modifies page, segment and
region values.

Most of this is open-coded like e.g. "1UL << 53". In order to clean
this up introduce a couple of new defines. The existing Linux memory
management defines are changed, so the mapping to the hardware
implementation is reflected.

Reviewed-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
This commit is contained in:
Heiko Carstens
2017-06-16 17:24:39 +02:00
committed by Martin Schwidefsky
parent a31a00ba7c
commit c67da7c7c5
3 changed files with 57 additions and 23 deletions
Download Patch File Download Diff File Expand all files Collapse all files

2
arch/s390/include/asm/pgalloc.h
View File

@@ -15,6 +15,8 @@
#include <linux/gfp.h>
#include <linux/mm.h>
#define CRST_ALLOC_ORDER 2
unsigned long *crst_table_alloc(struct mm_struct *);
void crst_table_free(struct mm_struct *, unsigned long *);