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powerpc/mm: properly set PAGE_KERNEL flags in ioremap()

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Set PAGE_KERNEL directly in the caller and do not rely on a
hack adding PAGE_KERNEL flags when _PAGE_PRESENT is not set.

As already done for PPC64, use pgprot_cache() helpers instead of
_PAGE_XXX flags in PPC32 ioremap() derived functions.

Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
This commit is contained in:
Christophe Leroy
2018-10-09 13:51:43 +00:00
committed by Michael Ellerman
parent aa91796ec4
commit 56f3c1413f
7 changed files with 24 additions and 33 deletions
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2
arch/powerpc/include/asm/nohash/pgtable.h
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@@ -197,6 +197,8 @@ extern int ptep_set_access_flags(struct vm_area_struct *vma, unsigned long addre
#if _PAGE_WRITETHRU != 0
#define pgprot_cached_wthru(prot) (__pgprot((pgprot_val(prot) & ~_PAGE_CACHE_CTL) | \
_PAGE_COHERENT | _PAGE_WRITETHRU))
#else
#define pgprot_cached_wthru(prot) pgprot_noncached(prot)
#endif
#define pgprot_cached_noncoherent(prot) \