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powerpc/mm: Fix missing page attributes in page table dump 

On some targets, _PAGE_RW is 0 and this is _PAGE_RO which is used.
There is also _PAGE_SHARED that is missing.

Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
This commit is contained in:
Christophe Leroy 2017-04-14 07:45:16 +02:00 committed by Michael Ellerman
parent 6c01bbd2cf
commit fd893fe56a
2 changed files with 10 additions and 0 deletions
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1
arch/powerpc/include/asm/book3s/64/pgtable.h
View File

@ -13,6 +13,7 @@
#define _PAGE_BIT_SWAP_TYPE 0 #define _PAGE_BIT_SWAP_TYPE 0
#define _PAGE_RO 0 #define _PAGE_RO 0
#define _PAGE_SHARED 0
#define _PAGE_EXEC 0x00001 /* execute permission */ #define _PAGE_EXEC 0x00001 /* execute permission */
#define _PAGE_WRITE 0x00002 /* write access allowed */ #define _PAGE_WRITE 0x00002 /* write access allowed */

9
arch/powerpc/mm/dump_linuxpagetables.c
View File

@ -121,8 +121,13 @@ static const struct flag_info flag_array[] = {
.set = "user", .set = "user",
.clear = " ", .clear = " ",
}, { }, {
#if _PAGE_RO == 0
.mask = _PAGE_RW, .mask = _PAGE_RW,
.val = _PAGE_RW, .val = _PAGE_RW,
#else
.mask = _PAGE_RO,
.val = 0,
#endif
.set = "rw", .set = "rw",
.clear = "ro", .clear = "ro",
}, { }, {
@ -222,6 +227,10 @@ static const struct flag_info flag_array[] = {
.mask = _PAGE_SPECIAL, .mask = _PAGE_SPECIAL,
.val = _PAGE_SPECIAL, .val = _PAGE_SPECIAL,
.set = "special", .set = "special",
}, {
.mask = _PAGE_SHARED,
.val = _PAGE_SHARED,
.set = "shared",
} }
}; };