| 12345678910111213141516171819202122232425262728293031 |
- From ef25bf644b7de83849a2f804c84bb54cd2f1255f Mon Sep 17 00:00:00 2001
- From: Alison Wang <b18965@freescale.com>
- Date: Mon, 11 Apr 2016 17:25:40 +0800
- Subject: [PATCH 09/70] armv8: aarch32: Allow RAM to be mapped for LayerScape
- SoC
- This patch is based on Kernel v4.1.8. As in v4.1.8, memremap() is not
- introduced and the WARN() check is not relaxed to allow MT_MEMORY_RW
- mappings of pfn_valid() pages, this patch is needed as a workaround for
- spin-table address which locates in RAM to be mapped.
- For the latest kernel in upstream, this patch is not needed anymore.
- Signed-off-by: Alison Wang <alison.wang@nxp.com>
- ---
- arch/arm/mm/ioremap.c | 2 ++
- 1 file changed, 2 insertions(+)
- --- a/arch/arm/mm/ioremap.c
- +++ b/arch/arm/mm/ioremap.c
- @@ -298,8 +298,10 @@ static void __iomem * __arm_ioremap_pfn_
- /*
- * Don't allow RAM to be mapped - this causes problems with ARMv6+
- */
- +#ifndef CONFIG_ARCH_LAYERSCAPE
- if (WARN_ON(pfn_valid(pfn)))
- return NULL;
- +#endif
-
- area = get_vm_area_caller(size, VM_IOREMAP, caller);
- if (!area)
|
