From: Becky Bruce <bec...@kernel.crashing.org>
Define HUGETLB_NEED_PRELOAD in mmu-book3e.h for CONFIG_PPC64 instead
of having a much more complicated #if block. This is easier to read
and maintain.
Signed-off-by: Becky Bruce <bec...@kernel.crashing.org>
---
arch/powerpc/include/asm/hugetlb.h | 3 +--
arch/powerpc/include/asm/mmu-book3e.h | 7 +++++++
2 files changed, 8 insertions(+), 2 deletions(-)
diff --git a/arch/powerpc/include/asm/hugetlb.h
b/arch/powerpc/include/asm/hugetlb.h
index 863f49d..dfdb95b 100644
--- a/arch/powerpc/include/asm/hugetlb.h
+++ b/arch/powerpc/include/asm/hugetlb.h
@@ -124,8 +124,7 @@ static inline int huge_ptep_set_access_flags(struct
vm_area_struct *vma,
unsigned long addr, pte_t *ptep,
pte_t pte, int dirty)
{
-#if defined(CONFIG_PPC_MMU_NOHASH) && \
- !(defined(CONFIG_PPC_FSL_BOOK3E) && defined(CONFIG_PPC32))
+#ifdef HUGETLB_NEED_PRELOAD
/*
* The "return 1" forces a call of update_mmu_cache, which will write a
* TLB entry. Without this, platforms that don't do a write of the TLB
diff --git a/arch/powerpc/include/asm/mmu-book3e.h
b/arch/powerpc/include/asm/mmu-book3e.h
index e4d0afc..20d29a5 100644
--- a/arch/powerpc/include/asm/mmu-book3e.h
+++ b/arch/powerpc/include/asm/mmu-book3e.h
@@ -262,6 +262,13 @@ extern int mmu_vmemmap_psize;
#ifdef CONFIG_PPC64
extern unsigned long linear_map_top;
+
+/*
+ * 64-bit booke platforms don't load the tlb in the tlb miss handler code.
+ * HUGETLB_NEED_PRELOAD handles this - it causes huge_ptep_set_access_flags to
+ * return 1, indicating that the tlb requires preloading.
+ */
+#define HUGETLB_NEED_PRELOAD
#endif
#endif /* !__ASSEMBLY__ */
--
1.5.6.5
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