aboutsummaryrefslogtreecommitdiff
path: root/arch
diff options
context:
space:
mode:
Diffstat (limited to 'arch')
-rw-r--r--arch/ppc64/kernel/vdso.c12
-rw-r--r--arch/sparc/mm/generic.c3
-rw-r--r--arch/sparc64/mm/generic.c3
3 files changed, 13 insertions, 5 deletions
diff --git a/arch/ppc64/kernel/vdso.c b/arch/ppc64/kernel/vdso.c
index efa985f05ac..4aacf521e3e 100644
--- a/arch/ppc64/kernel/vdso.c
+++ b/arch/ppc64/kernel/vdso.c
@@ -176,13 +176,13 @@ static struct page * vdso_vma_nopage(struct vm_area_struct * vma,
return NOPAGE_SIGBUS;
/*
- * Last page is systemcfg, special handling here, no get_page() a
- * this is a reserved page
+ * Last page is systemcfg.
*/
if ((vma->vm_end - address) <= PAGE_SIZE)
- return virt_to_page(systemcfg);
+ pg = virt_to_page(systemcfg);
+ else
+ pg = virt_to_page(vbase + offset);
- pg = virt_to_page(vbase + offset);
get_page(pg);
DBG(" ->page count: %d\n", page_count(pg));
@@ -259,7 +259,7 @@ int arch_setup_additional_pages(struct linux_binprm *bprm, int executable_stack)
* gettimeofday will be totally dead. It's fine to use that for setting
* breakpoints in the vDSO code pages though
*/
- vma->vm_flags = VM_READ | VM_EXEC | VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC;
+ vma->vm_flags = VM_READ | VM_EXEC | VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC | VM_RESERVED;
vma->vm_flags |= mm->def_flags;
vma->vm_page_prot = protection_map[vma->vm_flags & 0x7];
vma->vm_ops = &vdso_vmops;
@@ -603,6 +603,8 @@ void __init vdso_init(void)
ClearPageReserved(pg);
get_page(pg);
}
+
+ get_page(virt_to_page(systemcfg));
}
int in_gate_area_no_task(unsigned long addr)
diff --git a/arch/sparc/mm/generic.c b/arch/sparc/mm/generic.c
index 20ccb957fb7..659c9a71f86 100644
--- a/arch/sparc/mm/generic.c
+++ b/arch/sparc/mm/generic.c
@@ -73,6 +73,9 @@ int io_remap_pfn_range(struct vm_area_struct *vma, unsigned long from,
int space = GET_IOSPACE(pfn);
unsigned long offset = GET_PFN(pfn) << PAGE_SHIFT;
+ /* See comment in mm/memory.c remap_pfn_range */
+ vma->vm_flags |= VM_IO | VM_RESERVED;
+
prot = __pgprot(pg_iobits);
offset -= from;
dir = pgd_offset(mm, from);
diff --git a/arch/sparc64/mm/generic.c b/arch/sparc64/mm/generic.c
index c954d91f01d..afc01cec701 100644
--- a/arch/sparc64/mm/generic.c
+++ b/arch/sparc64/mm/generic.c
@@ -127,6 +127,9 @@ int io_remap_pfn_range(struct vm_area_struct *vma, unsigned long from,
int space = GET_IOSPACE(pfn);
unsigned long offset = GET_PFN(pfn) << PAGE_SHIFT;
+ /* See comment in mm/memory.c remap_pfn_range */
+ vma->vm_flags |= VM_IO | VM_RESERVED;
+
prot = __pgprot(pg_iobits);
offset -= from;
dir = pgd_offset(mm, from);