| Message ID | 20201113110952.68086-1-tsbogend@alpha.franken.de (mailing list archive) |
|---|---|
| State | Accepted |
| Commit | 724d554a117a0552c2c982f0b5cd1d685274d678 |
| Headers | show |
| Series | [1/4] MIPS: vdso: Use vma page protection for remapping | expand |
On Fri, Nov 13, 2020 at 12:09:49PM +0100, Thomas Bogendoerfer wrote: > 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> > --- > arch/mips/kernel/vdso.c | 4 ++-- > 1 file changed, 2 insertions(+), 2 deletions(-) applied to mips-next. Thomas.
diff --git a/arch/mips/kernel/vdso.c b/arch/mips/kernel/vdso.c index 242dc5e83847..7d0b91ad2581 100644 --- 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;
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> --- arch/mips/kernel/vdso.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)