| b.liu | e958203 | 2025-04-17 19:18:16 +0800 | [diff] [blame] | 1 | From 0f90f5d6b3097fd6e7dea3389dc3d8f8894b345c Mon Sep 17 00:00:00 2001 |
| 2 | From: Haiying Wang <Haiying.Wang@freescale.com> |
| 3 | Date: Wed, 22 Apr 2015 13:09:47 -0400 |
| 4 | Subject: [PATCH] arm64: add support to remap kernel cacheable memory to |
| 5 | userspace |
| 6 | |
| 7 | Signed-off-by: Haiying Wang <Haiying.Wang@freescale.com> |
| 8 | Reviewed-by: Roy Pledge <roy.pledge@freescale.com> |
| 9 | Reviewed-by: Stuart Yoder <stuart.yoder@freescale.com> |
| 10 | --- |
| 11 | arch/arm64/include/asm/pgtable.h | 3 +++ |
| 12 | 1 file changed, 3 insertions(+) |
| 13 | |
| 14 | --- a/arch/arm64/include/asm/pgtable.h |
| 15 | +++ b/arch/arm64/include/asm/pgtable.h |
| 16 | @@ -428,6 +428,9 @@ static inline pmd_t pmd_mkdevmap(pmd_t p |
| 17 | __pgprot_modify(prot, PTE_ATTRINDX_MASK, PTE_ATTRINDX(MT_DEVICE_nGnRnE) | PTE_PXN | PTE_UXN) |
| 18 | #define pgprot_writecombine(prot) \ |
| 19 | __pgprot_modify(prot, PTE_ATTRINDX_MASK, PTE_ATTRINDX(MT_NORMAL_NC) | PTE_PXN | PTE_UXN) |
| 20 | +#define pgprot_cached(prot) \ |
| 21 | + __pgprot_modify(prot, PTE_ATTRINDX_MASK, PTE_ATTRINDX(MT_NORMAL) | \ |
| 22 | + PTE_PXN | PTE_UXN) |
| 23 | #define pgprot_device(prot) \ |
| 24 | __pgprot_modify(prot, PTE_ATTRINDX_MASK, PTE_ATTRINDX(MT_DEVICE_nGnRE) | PTE_PXN | PTE_UXN) |
| 25 | /* |