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_64.c | 14 +------------- 1 file changed, 1 insertion(+), 13 deletions(-) (limited to 'arch/powerpc/mm/pgtable_64.c') diff --git a/arch/powerpc/mm/pgtable_64.c b/arch/powerpc/mm/pgtable_64.c index 813ea22c3e00..c9a623c2d8a2 100644 --- a/arch/powerpc/mm/pgtable_64.c +++ b/arch/powerpc/mm/pgtable_64.c @@ -244,20 +244,8 @@ void __iomem * ioremap_prot(phys_addr_t addr, unsigned long size, /* * Force kernel mapping. */ -#if defined(CONFIG_PPC_BOOK3S_64) - flags |= _PAGE_PRIVILEGED; -#else flags &= ~_PAGE_USER; -#endif - - -#ifdef _PAGE_BAP_SR - /* _PAGE_USER contains _PAGE_BAP_SR on BookE using the new PTE format - * which means that we just cleared supervisor access... oops ;-) This - * restores it - */ - flags |= _PAGE_BAP_SR; -#endif + flags |= _PAGE_PRIVILEGED; if (ppc_md.ioremap) return ppc_md.ioremap(addr, size, flags, caller); -- cgit v1.2.3