target/linux/layerscape/patches-4.4/3034-arm64-add-support-to-remap-kernel-cacheable-memory-t.patch

   1 From 52bffb91d40a3090ecf9138fadca97f77c99afa4 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 34/70] arm64: add support to remap kernel cacheable memory to
   5  userspace
   6
   7 Signed-off-by: Haiying Wang <Haiying.Wang@freescale.com>
   8 Change-Id: I50ee4798a2929932fa9ff7c9cdb42cd1a215f77a
   9 Reviewed-on: http://git.am.freescale.net:8181/35488
  10 Tested-by: Review Code-CDREVIEW <CDREVIEW@freescale.com>
  11 Reviewed-by: Roy Pledge <roy.pledge@freescale.com>
  12 Reviewed-by: Stuart Yoder <stuart.yoder@freescale.com>
  13 ---
  14  arch/arm64/include/asm/pgtable.h |    3 +++
  15  1 file changed, 3 insertions(+)
  16
  17 --- a/arch/arm64/include/asm/pgtable.h
  18 +++ b/arch/arm64/include/asm/pgtable.h
  19 @@ -389,6 +389,9 @@ static inline int has_transparent_hugepa
  20         __pgprot_modify(prot, PTE_ATTRINDX_MASK, PTE_ATTRINDX(MT_DEVICE_nGnRnE) | PTE_PXN | PTE_UXN)
  21  #define pgprot_writecombine(prot) \
  22         __pgprot_modify(prot, PTE_ATTRINDX_MASK, PTE_ATTRINDX(MT_NORMAL_NC) | PTE_PXN | PTE_UXN)
  23 +#define pgprot_cached(prot) \
  24 +       __pgprot_modify(prot, PTE_ATTRINDX_MASK, PTE_ATTRINDX(MT_NORMAL) | \
  25 +                       PTE_PXN | PTE_UXN)
  26  #define pgprot_device(prot) \
  27         __pgprot_modify(prot, PTE_ATTRINDX_MASK, PTE_ATTRINDX(MT_DEVICE_nGnRE) | PTE_PXN | PTE_UXN)
  28  #define __HAVE_PHYS_MEM_ACCESS_PROT