[PATCH] uml: pte_mkread fix
Fix the fact that pte_mkread set _PAGE_RW instead of _PAGE_USER (the logic is copied from i386 in most place, so it is really as bad as you're thinking). Thus currently page tables are more permissive than they should. Such a change may trigger other latent bugs, so be careful with this. Signed-off-by: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it> Signed-off-by: Jeff Dike <jdike@addtoit.com> Cc: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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@ -270,7 +270,7 @@ static inline pte_t pte_wrprotect(pte_t pte)
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static inline pte_t pte_mkread(pte_t pte)
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{
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pte_set_bits(pte, _PAGE_RW);
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pte_set_bits(pte, _PAGE_USER);
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return(pte_mknewprot(pte));
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}
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