mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-17 10:52:26 +07:00
powerpc/mm: Define platform default caches related flags
Cache related flags like _PAGE_COHERENT and _PAGE_WRITETHRU are defined on most platforms. The platforms not defining them don't define any alternative. So we can give them a NUL value directly for those platforms directly. Reviewed-by: Aneesh Kumar K.V <aneesh.kumar@linux.ibm.com> Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
This commit is contained in:
parent
a0da4bc166
commit
cbcbbf4afd
@ -53,6 +53,9 @@
|
||||
/* No page size encoding in the linux PTE */
|
||||
#define _PAGE_PSIZE 0
|
||||
|
||||
/* cache related flags non existing on 40x */
|
||||
#define _PAGE_COHERENT 0
|
||||
|
||||
#define _PAGE_KERNEL_RO 0
|
||||
#define _PAGE_KERNEL_ROX _PAGE_EXEC
|
||||
#define _PAGE_KERNEL_RW (_PAGE_DIRTY | _PAGE_RW | _PAGE_HWWRITE)
|
||||
|
@ -46,6 +46,10 @@
|
||||
#define _PAGE_NA 0x0200 /* Supervisor NA, User no access */
|
||||
#define _PAGE_RO 0x0600 /* Supervisor RO, User no access */
|
||||
|
||||
/* cache related flags non existing on 8xx */
|
||||
#define _PAGE_COHERENT 0
|
||||
#define _PAGE_WRITETHRU 0
|
||||
|
||||
#define _PAGE_KERNEL_RO (_PAGE_PRIVILEGED | _PAGE_RO)
|
||||
#define _PAGE_KERNEL_ROX (_PAGE_PRIVILEGED | _PAGE_RO | _PAGE_EXEC)
|
||||
#define _PAGE_KERNEL_RW (_PAGE_PRIVILEGED | _PAGE_DIRTY)
|
||||
|
@ -1,17 +1,6 @@
|
||||
/* SPDX-License-Identifier: GPL-2.0 */
|
||||
/* Included from asm/pgtable-*.h only ! */
|
||||
|
||||
/*
|
||||
* Some bits are only used on some cpu families... Make sure that all
|
||||
* the undefined gets a sensible default
|
||||
*/
|
||||
#ifndef _PAGE_COHERENT
|
||||
#define _PAGE_COHERENT 0
|
||||
#endif
|
||||
#ifndef _PAGE_WRITETHRU
|
||||
#define _PAGE_WRITETHRU 0
|
||||
#endif
|
||||
|
||||
/* Location of the PFN in the PTE. Most 32-bit platforms use the same
|
||||
* as _PAGE_SHIFT here (ie, naturally aligned).
|
||||
* Platform who don't just pre-define the value so we don't override it here
|
||||
|
Loading…
Reference in New Issue
Block a user