diff options
| author |   Christophe Leroy <christophe.leroy@c-s.fr> | 2018-10-09 13:51:56 +0000 |
|---|---|---|
| committer |   Michael Ellerman <mpe@ellerman.id.au> | 2018-10-14 18:04:09 +1100 |
| commit | 26973fa5ac0e3b88d0d476caccfc10839b26098b (patch) | |
| tree | 13ef3468b67d2d965aa7787670f9f62c2e31de72 /arch/powerpc/mm/pgtable_32.c | |
| parent | powerpc/mm: don't use _PAGE_EXEC for calling hash_preload() (diff) | |
| download | wireguard-linux-26973fa5ac0e3b88d0d476caccfc10839b26098b.tar.xz wireguard-linux-26973fa5ac0e3b88d0d476caccfc10839b26098b.zip | |
powerpc/mm: use pte helpers in generic code
Get rid of platform specific _PAGE_XXXX in powerpc common code and
use helpers instead.
mm/dump_linuxpagetables.c will be handled separately
Reviewed-by: Aneesh Kumar K.V <aneesh.kumar@linux.ibm.com>
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/pgtable_32.c')
| -rw-r--r-- | arch/powerpc/mm/pgtable_32.c | 15 |
1 files changed, 8 insertions, 7 deletions
diff --git a/arch/powerpc/mm/pgtable_32.c b/arch/powerpc/mm/pgtable_32.c index 01f348938328..5877f5aa8f5d 100644 --- a/arch/powerpc/mm/pgtable_32.c +++ b/arch/powerpc/mm/pgtable_32.c @@ -112,15 +112,17 @@ EXPORT_SYMBOL(ioremap_coherent); void __iomem * ioremap_prot(phys_addr_t addr, unsigned long size, unsigned long flags) { + pte_t pte = __pte(flags); + /* writeable implies dirty for kernel addresses */ - if ((flags & (_PAGE_RW | _PAGE_RO)) != _PAGE_RO) - flags |= _PAGE_DIRTY | _PAGE_HWWRITE; + if (pte_write(pte)) + pte = pte_mkdirty(pte); /* we don't want to let _PAGE_USER and _PAGE_EXEC leak out */ - flags &= ~(_PAGE_USER | _PAGE_EXEC); - flags |= _PAGE_PRIVILEGED; + pte = pte_exprotect(pte); + pte = pte_mkprivileged(pte); - return __ioremap_caller(addr, size, __pgprot(flags), __builtin_return_address(0)); + return __ioremap_caller(addr, size, pte_pgprot(pte), __builtin_return_address(0)); } EXPORT_SYMBOL(ioremap_prot); @@ -235,8 +237,7 @@ int map_kernel_page(unsigned long va, phys_addr_t pa, pgprot_t prot) /* The PTE should never be already set nor present in the * hash table */ - BUG_ON((pte_val(*pg) & (_PAGE_PRESENT | _PAGE_HASHPTE)) && - pgprot_val(prot)); + BUG_ON((pte_present(*pg) | pte_hashpte(*pg)) && pgprot_val(prot)); set_pte_at(&init_mm, va, pg, pfn_pte(pa >> PAGE_SHIFT, prot)); } smp_wmb(); |