target/linux/layerscape/patches-5.4/301-arch-0002-arm64-add-support-to-remap-kernel-cacheable-memory-t.patch

   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  /*