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authorChristophe Leroy <christophe.leroy@c-s.fr>2018-11-29 14:07:01 +0000
committerMichael Ellerman <mpe@ellerman.id.au>2018-12-04 19:45:01 +1100
commit32ea4c14999006fea541b5f78d008fffc1656849 (patch)
tree5f3a1af0e2a9ec621d1bfebd7e8eb51446810d07 /arch/powerpc/mm/mmu_context.c
parenta74791dd98332435550bdc57761969ba72b74769 (diff)
powerpc/mm: Extend pte_fragment functionality to PPC32
In order to allow the 8xx to handle pte_fragments, this patch extends the use of pte_fragments to PPC32 platforms. Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Diffstat (limited to 'arch/powerpc/mm/mmu_context.c')
-rw-r--r--arch/powerpc/mm/mmu_context.c10
1 files changed, 10 insertions, 0 deletions
diff --git a/arch/powerpc/mm/mmu_context.c b/arch/powerpc/mm/mmu_context.c
index f84e14f23e50..bb52320b7369 100644
--- a/arch/powerpc/mm/mmu_context.c
+++ b/arch/powerpc/mm/mmu_context.c
@@ -15,6 +15,7 @@
#include <linux/sched/mm.h>
#include <asm/mmu_context.h>
+#include <asm/pgalloc.h>
#if defined(CONFIG_PPC32)
static inline void switch_mm_pgdir(struct task_struct *tsk,
@@ -97,3 +98,12 @@ void switch_mm_irqs_off(struct mm_struct *prev, struct mm_struct *next,
switch_mmu_context(prev, next, tsk);
}
+#ifdef CONFIG_PPC32
+void arch_exit_mmap(struct mm_struct *mm)
+{
+ void *frag = pte_frag_get(&mm->context);
+
+ if (frag)
+ pte_frag_destroy(frag);
+}
+#endif