diff options
| author | Christophe Leroy <christophe.leroy@c-s.fr> | 2018-10-09 13:51:43 +0000 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2018-10-14 18:04:09 +1100 |
| commit | 56f3c1413f5cce0c8f4d6f1ab79d790da5aa61af (patch) | |
| tree | a1ec8ea4a338d63d56353383ae49caad7b5b23dc /arch/powerpc/mm | |
| parent | aa91796ec46339f2ed53da311bd3ea77a3e4dfe1 (diff) | |
powerpc/mm: properly set PAGE_KERNEL flags in ioremap()
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>
Diffstat (limited to 'arch/powerpc/mm')
| -rw-r--r-- | arch/powerpc/mm/pgtable_32.c | 28 | ||||
| -rw-r--r-- | arch/powerpc/mm/pgtable_64.c | 10 |
2 files changed, 15 insertions, 23 deletions
diff --git a/arch/powerpc/mm/pgtable_32.c b/arch/powerpc/mm/pgtable_32.c index 4c3adde09d95..6a81a2446c47 100644 --- a/arch/powerpc/mm/pgtable_32.c +++ b/arch/powerpc/mm/pgtable_32.c @@ -76,32 +76,36 @@ pgtable_t pte_alloc_one(struct mm_struct *mm, unsigned long address) void __iomem * ioremap(phys_addr_t addr, unsigned long size) { - return __ioremap_caller(addr, size, _PAGE_NO_CACHE | _PAGE_GUARDED, - __builtin_return_address(0)); + unsigned long flags = pgprot_val(pgprot_noncached(PAGE_KERNEL)); + + return __ioremap_caller(addr, size, flags, __builtin_return_address(0)); } EXPORT_SYMBOL(ioremap); void __iomem * ioremap_wc(phys_addr_t addr, unsigned long size) { - return __ioremap_caller(addr, size, _PAGE_NO_CACHE, - __builtin_return_address(0)); + unsigned long flags = pgprot_val(pgprot_noncached_wc(PAGE_KERNEL)); + + return __ioremap_caller(addr, size, flags, __builtin_return_address(0)); } EXPORT_SYMBOL(ioremap_wc); void __iomem * ioremap_wt(phys_addr_t addr, unsigned long size) { - return __ioremap_caller(addr, size, _PAGE_WRITETHRU, - __builtin_return_address(0)); + unsigned long flags = pgprot_val(pgprot_cached_wthru(PAGE_KERNEL)); + + return __ioremap_caller(addr, size, flags, __builtin_return_address(0)); } EXPORT_SYMBOL(ioremap_wt); void __iomem * ioremap_coherent(phys_addr_t addr, unsigned long size) { - return __ioremap_caller(addr, size, _PAGE_COHERENT, - __builtin_return_address(0)); + unsigned long flags = pgprot_val(pgprot_cached(PAGE_KERNEL)); + + return __ioremap_caller(addr, size, flags, __builtin_return_address(0)); } EXPORT_SYMBOL(ioremap_coherent); @@ -134,14 +138,6 @@ __ioremap_caller(phys_addr_t addr, unsigned long size, unsigned long flags, phys_addr_t p; int err; - /* Make sure we have the base flags */ - if ((flags & _PAGE_PRESENT) == 0) - flags |= pgprot_val(PAGE_KERNEL); - - /* Non-cacheable page cannot be coherent */ - if (flags & _PAGE_NO_CACHE) - flags &= ~_PAGE_COHERENT; - /* * Choose an address to map it to. * Once the vmalloc system is running, we use it. diff --git a/arch/powerpc/mm/pgtable_64.c b/arch/powerpc/mm/pgtable_64.c index c0f356d9b135..1f1bb40555a8 100644 --- a/arch/powerpc/mm/pgtable_64.c +++ b/arch/powerpc/mm/pgtable_64.c @@ -118,10 +118,6 @@ void __iomem * __ioremap_at(phys_addr_t pa, void *ea, unsigned long size, { unsigned long i; - /* Make sure we have the base flags */ - if ((flags & _PAGE_PRESENT) == 0) - flags |= pgprot_val(PAGE_KERNEL); - /* We don't support the 4K PFN hack with ioremap */ if (flags & H_PAGE_4K_PFN) return NULL; @@ -204,7 +200,7 @@ void __iomem * __ioremap(phys_addr_t addr, unsigned long size, void __iomem * ioremap(phys_addr_t addr, unsigned long size) { - unsigned long flags = pgprot_val(pgprot_noncached(__pgprot(0))); + unsigned long flags = pgprot_val(pgprot_noncached(PAGE_KERNEL)); void *caller = __builtin_return_address(0); if (ppc_md.ioremap) @@ -214,7 +210,7 @@ void __iomem * ioremap(phys_addr_t addr, unsigned long size) void __iomem * ioremap_wc(phys_addr_t addr, unsigned long size) { - unsigned long flags = pgprot_val(pgprot_noncached_wc(__pgprot(0))); + unsigned long flags = pgprot_val(pgprot_noncached_wc(PAGE_KERNEL)); void *caller = __builtin_return_address(0); if (ppc_md.ioremap) @@ -224,7 +220,7 @@ void __iomem * ioremap_wc(phys_addr_t addr, unsigned long size) void __iomem *ioremap_coherent(phys_addr_t addr, unsigned long size) { - unsigned long flags = pgprot_val(pgprot_cached(__pgprot(0))); + unsigned long flags = pgprot_val(pgprot_cached(PAGE_KERNEL)); void *caller = __builtin_return_address(0); if (ppc_md.ioremap) |