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authorDavid Gibson <david@gibson.dropbear.id.au>2008-10-12 17:54:24 +0000
committerBenjamin Herrenschmidt <benh@kernel.crashing.org>2008-10-14 10:35:27 +1100
commitf5ea64dcbad89875d130596df14c9b25d994a737 (patch)
tree03bde08104ea5c29edcaafc11576eb5594a7426c /arch/powerpc/mm
parentcd301c7ba4bbb5a0ee6ebf13eb4a304f29b13847 (diff)
powerpc: Get USE_STRICT_MM_TYPECHECKS working again
The typesafe version of the powerpc pagetable handling (with USE_STRICT_MM_TYPECHECKS defined) has bitrotted again. This patch makes a bunch of small fixes to get it back to building status. It's still not enabled by default as gcc still generates worse code with it for some reason. Signed-off-by: David Gibson <david@gibson.dropbear.id.au> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Diffstat (limited to 'arch/powerpc/mm')
-rw-r--r--arch/powerpc/mm/gup.c7
-rw-r--r--arch/powerpc/mm/hash_utils_64.c4
-rw-r--r--arch/powerpc/mm/init_64.c4
3 files changed, 8 insertions, 7 deletions
diff --git a/arch/powerpc/mm/gup.c b/arch/powerpc/mm/gup.c
index 9fdf4d6335e..28a114db3ba 100644
--- a/arch/powerpc/mm/gup.c
+++ b/arch/powerpc/mm/gup.c
@@ -41,7 +41,7 @@ static noinline int gup_pte_range(pmd_t pmd, unsigned long addr,
page = pte_page(pte);
if (!page_cache_get_speculative(page))
return 0;
- if (unlikely(pte != *ptep)) {
+ if (unlikely(pte_val(pte) != pte_val(*ptep))) {
put_page(page);
return 0;
}
@@ -92,7 +92,7 @@ static noinline int gup_huge_pte(pte_t *ptep, struct hstate *hstate,
*nr -= refs;
return 0;
}
- if (unlikely(pte != *ptep)) {
+ if (unlikely(pte_val(pte) != pte_val(*ptep))) {
/* Could be optimized better */
while (*nr) {
put_page(page);
@@ -237,7 +237,8 @@ int get_user_pages_fast(unsigned long start, int nr_pages, int write,
pgd_t pgd = *pgdp;
VM_BUG_ON(shift != mmu_psize_defs[get_slice_psize(mm, addr)].shift);
- pr_debug(" %016lx: normal pgd %p\n", addr, (void *)pgd);
+ pr_debug(" %016lx: normal pgd %p\n", addr,
+ (void *)pgd_val(pgd));
next = pgd_addr_end(addr, end);
if (pgd_none(pgd))
goto slow;
diff --git a/arch/powerpc/mm/hash_utils_64.c b/arch/powerpc/mm/hash_utils_64.c
index 09db4efe192..5c64af17475 100644
--- a/arch/powerpc/mm/hash_utils_64.c
+++ b/arch/powerpc/mm/hash_utils_64.c
@@ -541,7 +541,7 @@ static unsigned long __init htab_get_table_size(void)
void create_section_mapping(unsigned long start, unsigned long end)
{
BUG_ON(htab_bolt_mapping(start, end, __pa(start),
- PAGE_KERNEL, mmu_linear_psize,
+ pgprot_val(PAGE_KERNEL), mmu_linear_psize,
mmu_kernel_ssize));
}
@@ -649,7 +649,7 @@ void __init htab_initialize(void)
mtspr(SPRN_SDR1, _SDR1);
}
- prot = PAGE_KERNEL;
+ prot = pgprot_val(PAGE_KERNEL);
#ifdef CONFIG_DEBUG_PAGEALLOC
linear_map_hash_count = lmb_end_of_DRAM() >> PAGE_SHIFT;
diff --git a/arch/powerpc/mm/init_64.c b/arch/powerpc/mm/init_64.c
index 036fe2f10c7..3e6a6543f53 100644
--- a/arch/powerpc/mm/init_64.c
+++ b/arch/powerpc/mm/init_64.c
@@ -228,8 +228,8 @@ int __meminit vmemmap_populate(struct page *start_page,
start, p, __pa(p));
mapped = htab_bolt_mapping(start, start + page_size, __pa(p),
- PAGE_KERNEL, mmu_vmemmap_psize,
- mmu_kernel_ssize);
+ pgprot_val(PAGE_KERNEL),
+ mmu_vmemmap_psize, mmu_kernel_ssize);
BUG_ON(mapped < 0);
}