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Code Issues Releases Wiki Activity

powerpc/nohash: Remove _PAGE_BUSY

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_PAGE_BUSY is always 0, remove it.

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 2018-04-24 18:31:30 +02:00 committed by Michael Ellerman
parent 45201c8794
commit 0d594aa75f
2 changed files with 3 additions and 12 deletions
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10
arch/powerpc/include/asm/nohash/64/pgtable.h
View file

@ -186,14 +186,12 @@ static inline unsigned long pte_update(struct mm_struct *mm,
__asm__ __volatile__(
"1: ldarx %0,0,%3 # pte_update\n\
andi. %1,%0,%6\n\
bne- 1b \n\
andc %1,%0,%4 \n\
or %1,%1,%7\n\
or %1,%1,%6\n\
stdcx. %1,0,%3 \n\
bne- 1b"
: "=&r" (old), "=&r" (tmp), "=m" (*ptep)
: "r" (ptep), "r" (clr), "m" (*ptep), "i" (_PAGE_BUSY), "r" (set)
: "r" (ptep), "r" (clr), "m" (*ptep), "r" (set)
: "cc" );
#else
unsigned long old = pte_val(*ptep);
@ -295,13 +293,11 @@ static inline void __ptep_set_access_flags(struct mm_struct *mm,
__asm__ __volatile__(
"1: ldarx %0,0,%4\n\
andi. %1,%0,%6\n\
bne- 1b \n\
or %0,%3,%0\n\
stdcx. %0,0,%4\n\
bne- 1b"
:"=&r" (old), "=&r" (tmp), "=m" (*ptep)
:"r" (bits), "r" (ptep), "m" (*ptep), "i" (_PAGE_BUSY)
:"r" (bits), "r" (ptep), "m" (*ptep)
:"cc");
#else
unsigned long old = pte_val(*ptep);

5
arch/powerpc/include/asm/nohash/pte-book3e.h
View file

@ -57,13 +57,8 @@
#define _PAGE_USER (_PAGE_BAP_UR | _PAGE_BAP_SR) /* Can be read */
#define _PAGE_PRIVILEGED (_PAGE_BAP_SR)
#define _PAGE_BUSY 0
#define _PAGE_SPECIAL _PAGE_SW0
/* Flags to be preserved on PTE modifications */
#define _PAGE_HPTEFLAGS _PAGE_BUSY
/* Base page size */
#ifdef CONFIG_PPC_64K_PAGES
#define _PAGE_PSIZE _PAGE_PSIZE_64K