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iommu/arm-smmu: Allocate non-coherent memory for secure pagetables

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Allocate non-coherent memory for secure page tables which ensure
that the cache is clean before passing it to TZ.

Fixes: 8836cfda582e3 ("iommu: Do not set COHERENT flag for secure pagetable allocation")
Change-Id: I544c2c37e12e0597a6d452779fbe0186163b4578
Signed-off-by: Zhenhua Huang <zhenhuah@codeaurora.org>
Signed-off-by: Archana Sriram <apsrir@codeaurora.org>
This commit is contained in:
Zhenhua Huang 2018-02-26 14:35:56 +08:00 committed by Archana Sriram
parent 5475cd6f75
commit 140a526b7c
1 changed files with 1 additions and 0 deletions
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drivers/iommu/io-pgtable-msm-secure.c
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@ -66,6 +66,7 @@ int msm_iommu_sec_pgtbl_init(void)
/* Now allocate memory for the secure page tables */
attrs = DMA_ATTR_NO_KERNEL_MAPPING;
dev.coherent_dma_mask = DMA_BIT_MASK(sizeof(dma_addr_t) * 8);
arch_setup_dma_ops(&dev, 0, 0, NULL, 0);
cpu_addr = dma_alloc_attrs(&dev, psize[0], &paddr, GFP_KERNEL, attrs);
if (!cpu_addr) {
pr_err("%s: Failed to allocate %d bytes for PTBL\n",