xiaomi-sm8450/android_kernel_xiaomi_sm8450
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tile: add virt_to_kpte() API and clean up and document behavior

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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>
This commit is contained in:
Chris Metcalf
2013-08-12 15:08:09 -04:00
parent 49cf78ef7b
commit 640710a33b
6 changed files with 30 additions and 11 deletions
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2
arch/tile/include/asm/mmu_context.h
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@@ -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);
}