Commit 724d554a authored by Thomas Bogendoerfer's avatar Thomas Bogendoerfer
Browse files

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: default avatarThomas Bogendoerfer <tsbogend@alpha.franken.de>
parent 8c9e8b0a

arch/mips/kernel/vdso.c

+2 −2
Original line number Diff line number Diff line
@@ -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;