Hi all,
On Thu, 4 Jun 2020 17:49:25 +1000 Stephen Rothwell <sfr@xxxxxxxxxxxxxxxx> wrote:
>
> diff --cc arch/powerpc/include/asm/nohash/32/pgtable.h
> index 639f3b3713ec,eb8538c85077..1927e1b653f2
> --- a/arch/powerpc/include/asm/nohash/32/pgtable.h
> +++ b/arch/powerpc/include/asm/nohash/32/pgtable.h
> @@@ -342,15 -334,6 +337,10 @@@ static inline int pte_young(pte_t pte
> pfn_to_page((__pa(pmd_val(pmd)) >> PAGE_SHIFT))
> #endif
>
> - /* Find an entry in the third-level page table.. */
> - #define pte_index(address) \
> - (((address) >> PAGE_SHIFT) & (PTRS_PER_PTE - 1))
> +#define pte_offset_kernel(dir, addr) \
> + (pmd_bad(*(dir)) ? NULL : (pte_t *)pmd_page_vaddr(*(dir)) + \
> + pte_index(addr))
> - #define pte_offset_map(dir, addr) pte_offset_kernel((dir), (addr))
> - static inline void pte_unmap(pte_t *pte) { }
> +
> /*
> * Encode and decode a swap entry.
> * Note that the bits we use in a PTE for representing a swap entry
I have added this hunk (sort of - see below) to linux-next for tomorrow
as a fix for mm-consolidate-pte_index-and-pte_offset_-definitions.
From: Stephen Rothwell <sfr@xxxxxxxxxxxxxxxx>
Date: Thu, 4 Jun 2020 21:16:19 +1000
Subject: [PATCH] mm-consolidate-pte_index-and-pte_offset_-definitions-fix
Signed-off-by: Stephen Rothwell <sfr@xxxxxxxxxxxxxxxx>
---
arch/powerpc/include/asm/nohash/32/pgtable.h | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/arch/powerpc/include/asm/nohash/32/pgtable.h b/arch/powerpc/include/asm/nohash/32/pgtable.h
index c188a6f64bcd..d94bcd117c5b 100644
--- a/arch/powerpc/include/asm/nohash/32/pgtable.h
+++ b/arch/powerpc/include/asm/nohash/32/pgtable.h
@@ -341,6 +341,10 @@ static inline int pte_young(pte_t pte)
pfn_to_page((__pa(pmd_val(pmd)) >> PAGE_SHIFT))
#endif
+#define pte_offset_kernel(dir, addr) \
+ (pmd_bad(*(dir)) ? NULL : (pte_t *)pmd_page_vaddr(*(dir)) + \
+ pte_index(addr))
+
/*
* Encode and decode a swap entry.
* Note that the bits we use in a PTE for representing a swap entry
--
2.27.0.rc2
--
Cheers,
Stephen Rothwell
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