From 812fadcb941a81d1f3948b10a95a4dce663da3e4 Mon Sep 17 00:00:00 2001 From: Christophe Leroy Date: Fri, 12 Jan 2018 13:45:27 +0100 Subject: powerpc/mm: extend _PAGE_PRIVILEGED to all CPUs commit ac29c64089b74 ("powerpc/mm: Replace _PAGE_USER with _PAGE_PRIVILEGED") introduced _PAGE_PRIVILEGED for BOOK3S/64 This patch generalises _PAGE_PRIVILEGED for all CPUs, allowing to have either _PAGE_PRIVILEGED or _PAGE_USER or both. PPC_8xx has a _PAGE_SHARED flag which is set for and only for all non user pages. Lets rename it _PAGE_PRIVILEGED to remove confusion as it has nothing to do with Linux shared pages. On BookE, there's a _PAGE_BAP_SR which has to be set for kernel pages: defining _PAGE_PRIVILEGED as _PAGE_BAP_SR will make this generic Signed-off-by: Christophe Leroy Signed-off-by: Michael Ellerman --- arch/powerpc/mm/pgtable.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'arch/powerpc/mm/pgtable.c') diff --git a/arch/powerpc/mm/pgtable.c b/arch/powerpc/mm/pgtable.c index a03ff3d99e0c..9f361ae571e9 100644 --- a/arch/powerpc/mm/pgtable.c +++ b/arch/powerpc/mm/pgtable.c @@ -54,7 +54,8 @@ static inline int pte_looks_normal(pte_t pte) return 0; #else return (pte_val(pte) & - (_PAGE_PRESENT | _PAGE_SPECIAL | _PAGE_NO_CACHE | _PAGE_USER)) == + (_PAGE_PRESENT | _PAGE_SPECIAL | _PAGE_NO_CACHE | _PAGE_USER | + _PAGE_PRIVILEGED)) == (_PAGE_PRESENT | _PAGE_USER); #endif } -- cgit