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| author |   Chris Metcalf <cmetcalf@tilera.com> | 2013-08-12 15:08:09 -0400 |
|---|---|---|
| committer | Chris Metcalf <cmetcalf@tilera.com> | 2013-09-03 14:52:13 -0400 |
| commit | 640710a33b54de8d90ae140ef633ed0feba76a75 (patch) | |
| tree | c58e0f7b36fef258674ddf9d5425608d3b5a430e /arch/tile/include | |
| parent | tile: support FRAME_POINTER (diff) | |
| download | linux-dev-640710a33b54de8d90ae140ef633ed0feba76a75.tar.xz linux-dev-640710a33b54de8d90ae140ef633ed0feba76a75.zip | |
tile: add virt_to_kpte() API and clean up and document behavior
We use virt_to_pte(NULL, va) a lot, which isn't very obvious.
I added virt_to_kpte(va) as a more obvious wrapper function,
that also validates the va as being a kernel adddress.
And, I fixed the semantics of virt_to_pte() so that we handle
the pud and pmd the same way, and we now document the fact that
we handle the final pte level differently.
Signed-off-by: Chris Metcalf <cmetcalf@tilera.com>
Diffstat (limited to 'arch/tile/include')
| -rw-r--r-- | arch/tile/include/asm/mmu_context.h | 2 | ||||
| -rw-r--r-- | arch/tile/include/asm/page.h | 1 |
2 files changed, 2 insertions, 1 deletions
diff --git a/arch/tile/include/asm/mmu_context.h b/arch/tile/include/asm/mmu_context.h index 37f0b741dee7..4734215e2ad4 100644 --- a/arch/tile/include/asm/mmu_context.h +++ b/arch/tile/include/asm/mmu_context.h @@ -45,7 +45,7 @@ static inline void __install_page_table(pgd_t *pgdir, int asid, pgprot_t prot) static inline void install_page_table(pgd_t *pgdir, int asid) { - pte_t *ptep = virt_to_pte(NULL, (unsigned long)pgdir); + pte_t *ptep = virt_to_kpte((unsigned long)pgdir); __install_page_table(pgdir, asid, *ptep); } diff --git a/arch/tile/include/asm/page.h b/arch/tile/include/asm/page.h index 980843dd983e..6346888f7bdc 100644 --- a/arch/tile/include/asm/page.h +++ b/arch/tile/include/asm/page.h @@ -328,6 +328,7 @@ static inline int pfn_valid(unsigned long pfn) struct mm_struct; extern pte_t *virt_to_pte(struct mm_struct *mm, unsigned long addr); +extern pte_t *virt_to_kpte(unsigned long kaddr); #endif /* !__ASSEMBLY__ */ |