From 0f90f5d6b3097fd6e7dea3389dc3d8f8894b345c Mon Sep 17 00:00:00 2001 From: Haiying Wang Date: Wed, 22 Apr 2015 13:09:47 -0400 Subject: [PATCH] arm64: add support to remap kernel cacheable memory to userspace Signed-off-by: Haiying Wang Reviewed-by: Roy Pledge Reviewed-by: Stuart Yoder --- arch/arm64/include/asm/pgtable.h | 3 +++ 1 file changed, 3 insertions(+) --- a/arch/arm64/include/asm/pgtable.h +++ b/arch/arm64/include/asm/pgtable.h @@ -422,6 +422,9 @@ static inline pmd_t pmd_mkdevmap(pmd_t p __pgprot_modify(prot, PTE_ATTRINDX_MASK, PTE_ATTRINDX(MT_DEVICE_nGnRnE) | PTE_PXN | PTE_UXN) #define pgprot_writecombine(prot) \ __pgprot_modify(prot, PTE_ATTRINDX_MASK, PTE_ATTRINDX(MT_NORMAL_NC) | PTE_PXN | PTE_UXN) +#define pgprot_cached(prot) \ + __pgprot_modify(prot, PTE_ATTRINDX_MASK, PTE_ATTRINDX(MT_NORMAL) | \ + PTE_PXN | PTE_UXN) #define pgprot_device(prot) \ __pgprot_modify(prot, PTE_ATTRINDX_MASK, PTE_ATTRINDX(MT_DEVICE_nGnRE) | PTE_PXN | PTE_UXN) /*