layerscape: add patches-5.4

[openwrt/staging/wigyori.git] / target / linux / layerscape / patches-5.4 / 301-arch-0002-arm64-add-support-to-remap-kernel-cacheable-memory-t.patch

diff --git a/target/linux/layerscape/patches-5.4/301-arch-0002-arm64-add-support-to-remap-kernel-cacheable-memory-t.patch b/target/linux/layerscape/patches-5.4/301-arch-0002-arm64-add-support-to-remap-kernel-cacheable-memory-t.patch
new file mode 100644 (file)
index 0000000..282f8e9
--- /dev/null
+++ b/target/linux/layerscape/patches-5.4/301-arch-0002-arm64-add-support-to-remap-kernel-cacheable-memory-t.patch
@@ -0,0 +1,25 @@
+From 0f90f5d6b3097fd6e7dea3389dc3d8f8894b345c Mon Sep 17 00:00:00 2001
+From: Haiying Wang <Haiying.Wang@freescale.com>
+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 <Haiying.Wang@freescale.com>
+Reviewed-by: Roy Pledge <roy.pledge@freescale.com>
+Reviewed-by: Stuart Yoder <stuart.yoder@freescale.com>
+---
+ 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
+@@ -414,6 +414,9 @@ 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)
+ /*