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OpenCloudOS-Kernel
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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>
This commit is contained in:
Thomas Bogendoerfer 2020-11-13 12:09:49 +01:00
parent 8c9e8b0a28
commit 724d554a11
1 changed files with 2 additions and 2 deletions
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4
arch/mips/kernel/vdso.c
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@ -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;