MIPS: vdso: Use vma page protection for remapping

MIPS protection bits are setup during runtime so using defines like
PAGE_READONLY ignores these runtime changes. To fix this we simply
use the page protection of the setup vma.

Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>

diff --git a/arch/mips/kernel/vdso.c b/arch/mips/kernel/vdso.c
index 242dc5e..7d0b91a 100644 (file)
--- a/arch/mips/kernel/vdso.c
+++ b/arch/mips/kernel/vdso.c
@@ -161,7 +161,7 @@ int arch_setup_additional_pages(struct linux_binprm *bprm, int uses_interp)
                gic_pfn = virt_to_phys(mips_gic_base + MIPS_GIC_USER_OFS) >> PAGE_SHIFT;
 
                ret = io_remap_pfn_range(vma, base, gic_pfn, gic_size,
-                                        pgprot_noncached(PAGE_READONLY));
+                                        pgprot_noncached(vma->vm_page_prot));
                if (ret)
                        goto out;
        }
@@ -169,7 +169,7 @@ int arch_setup_additional_pages(struct linux_binprm *bprm, int uses_interp)
        /* Map data page. */
        ret = remap_pfn_range(vma, data_addr,
                              virt_to_phys(vdso_data) >> PAGE_SHIFT,
-                             PAGE_SIZE, PAGE_READONLY);
+                             PAGE_SIZE, vma->vm_page_prot);
        if (ret)
                goto out;