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Subject[PATCH v1 22/27] powerpc/mm: move slice_mask_for_size() into mmu.h
Date
Move slice_mask_for_size() into subarch mmu.h

Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>
---
arch/powerpc/include/asm/book3s/64/mmu.h | 22 +++++++++++++----
arch/powerpc/include/asm/nohash/32/mmu-8xx.h | 18 ++++++++++++++
arch/powerpc/mm/slice.c | 36 ----------------------------
3 files changed, 36 insertions(+), 40 deletions(-)

diff --git a/arch/powerpc/include/asm/book3s/64/mmu.h b/arch/powerpc/include/asm/book3s/64/mmu.h
index 1ceee000c18d..927e3714b0d8 100644
--- a/arch/powerpc/include/asm/book3s/64/mmu.h
+++ b/arch/powerpc/include/asm/book3s/64/mmu.h
@@ -123,7 +123,6 @@ typedef struct {
/* NPU NMMU context */
struct npu_context *npu_context;

-#ifdef CONFIG_PPC_MM_SLICES
/* SLB page size encodings*/
unsigned char low_slices_psize[BITS_PER_LONG / BITS_PER_BYTE];
unsigned char high_slices_psize[SLICE_ARRAY_SIZE];
@@ -136,9 +135,6 @@ typedef struct {
struct slice_mask mask_16m;
struct slice_mask mask_16g;
# endif
-#else
- u16 sllp; /* SLB page size encoding */
-#endif
unsigned long vdso_base;
#ifdef CONFIG_PPC_SUBPAGE_PROT
struct subpage_prot_table spt;
@@ -172,6 +168,24 @@ extern int mmu_vmalloc_psize;
extern int mmu_vmemmap_psize;
extern int mmu_io_psize;

+static inline struct slice_mask *slice_mask_for_size(mm_context_t *ctx, int psize)
+{
+#ifdef CONFIG_PPC_64K_PAGES
+ if (psize == MMU_PAGE_64K)
+ return &ctx->mask_64k;
+#endif
+ if (psize == MMU_PAGE_4K)
+ return &ctx->mask_4k;
+#ifdef CONFIG_HUGETLB_PAGE
+ if (psize == MMU_PAGE_16M)
+ return &ctx->mask_16m;
+ if (psize == MMU_PAGE_16G)
+ return &ctx->mask_16g;
+#endif
+ WARN_ON(true);
+ return NULL;
+}
+
/* MMU initialization */
void mmu_early_init_devtree(void);
void hash__early_init_devtree(void);
diff --git a/arch/powerpc/include/asm/nohash/32/mmu-8xx.h b/arch/powerpc/include/asm/nohash/32/mmu-8xx.h
index 0a1a3fc54e54..4ba92c48b3a5 100644
--- a/arch/powerpc/include/asm/nohash/32/mmu-8xx.h
+++ b/arch/powerpc/include/asm/nohash/32/mmu-8xx.h
@@ -255,4 +255,22 @@ extern s32 patch__itlbmiss_perf, patch__dtlbmiss_perf;

#define mmu_linear_psize MMU_PAGE_8M

+#ifndef __ASSEMBLY__
+#ifdef CONFIG_PPC_MM_SLICES
+static inline struct slice_mask *slice_mask_for_size(mm_context_t *ctx, int psize)
+{
+ if (psize == mmu_virtual_psize)
+ return &ctx->mask_base_psize;
+#ifdef CONFIG_HUGETLB_PAGE
+ if (psize == MMU_PAGE_512K)
+ return &ctx->mask_512k;
+ if (psize == MMU_PAGE_8M)
+ return &ctx->mask_8m;
+#endif
+ WARN_ON(true);
+ return NULL;
+}
+#endif
+#endif /* !__ASSEMBLY__ */
+
#endif /* _ASM_POWERPC_MMU_8XX_H_ */
diff --git a/arch/powerpc/mm/slice.c b/arch/powerpc/mm/slice.c
index 231fd88d97e2..357d64e14757 100644
--- a/arch/powerpc/mm/slice.c
+++ b/arch/powerpc/mm/slice.c
@@ -126,42 +126,6 @@ static void slice_mask_for_free(struct mm_struct *mm, struct slice_mask *ret,
__set_bit(i, ret->high_slices);
}

-#ifdef CONFIG_PPC_BOOK3S_64
-static struct slice_mask *slice_mask_for_size(mm_context_t *ctx, int psize)
-{
-#ifdef CONFIG_PPC_64K_PAGES
- if (psize == MMU_PAGE_64K)
- return &ctx->mask_64k;
-#endif
- if (psize == MMU_PAGE_4K)
- return &ctx->mask_4k;
-#ifdef CONFIG_HUGETLB_PAGE
- if (psize == MMU_PAGE_16M)
- return &ctx->mask_16m;
- if (psize == MMU_PAGE_16G)
- return &ctx->mask_16g;
-#endif
- WARN_ON(true);
- return NULL;
-}
-#elif defined(CONFIG_PPC_8xx)
-static struct slice_mask *slice_mask_for_size(mm_context_t *ctx, int psize)
-{
- if (psize == mmu_virtual_psize)
- return &ctx->mask_base_psize;
-#ifdef CONFIG_HUGETLB_PAGE
- if (psize == MMU_PAGE_512K)
- return &ctx->mask_512k;
- if (psize == MMU_PAGE_8M)
- return &ctx->mask_8m;
-#endif
- WARN_ON(true);
- return NULL;
-}
-#else
-#error "Must define the slice masks for page sizes supported by the platform"
-#endif
-
static bool slice_check_range_fits(struct mm_struct *mm,
const struct slice_mask *available,
unsigned long start, unsigned long len)
--
2.13.3
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