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| author | H. Peter Anvin <hpa@linux.intel.com> | 2012-09-21 12:43:06 -0700 |
|---|---|---|
| committer | H. Peter Anvin <hpa@linux.intel.com> | 2012-09-21 12:45:25 -0700 |
| commit | 8bd753be7a96443dd5111cb07ed5907a3787c978 (patch) | |
| tree | f97db44a7bda6557f5730d42b02e4155e0969fd8 | |
| parent | 05194cfc547528a01d655262c49da3b1311c4b11 (diff) | |
| download | linux-3.10-8bd753be7a96443dd5111cb07ed5907a3787c978.tar.gz linux-3.10-8bd753be7a96443dd5111cb07ed5907a3787c978.tar.bz2 linux-3.10-8bd753be7a96443dd5111cb07ed5907a3787c978.zip | |
x86-32, mm: The WP test should be done on a kernel page
PAGE_READONLY includes user permission, but this is a page used
exclusively by the kernel; use PAGE_KERNEL_RO instead.
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
Link: http://lkml.kernel.org/r/1348256595-29119-3-git-send-email-hpa@linux.intel.com
| -rw-r--r-- | arch/x86/mm/init_32.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/x86/mm/init_32.c b/arch/x86/mm/init_32.c index 575d86f85ce..e537b351e8c 100644 --- a/arch/x86/mm/init_32.c +++ b/arch/x86/mm/init_32.c @@ -712,7 +712,7 @@ static void __init test_wp_bit(void) "Checking if this processor honours the WP bit even in supervisor mode..."); /* Any page-aligned address will do, the test is non-destructive */ - __set_fixmap(FIX_WP_TEST, __pa(&swapper_pg_dir), PAGE_READONLY); + __set_fixmap(FIX_WP_TEST, __pa(&swapper_pg_dir), PAGE_KERNEL_RO); boot_cpu_data.wp_works_ok = do_test_wp_bit(); clear_fixmap(FIX_WP_TEST); |