diff options
Diffstat (limited to 'target/linux/layerscape/patches-5.4/821-vfio-0010-vfio-fsl-mc-Map-the-VFIO-region-according-to-the-fla.patch')
| -rw-r--r-- | target/linux/layerscape/patches-5.4/821-vfio-0010-vfio-fsl-mc-Map-the-VFIO-region-according-to-the-fla.patch | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/target/linux/layerscape/patches-5.4/821-vfio-0010-vfio-fsl-mc-Map-the-VFIO-region-according-to-the-fla.patch b/target/linux/layerscape/patches-5.4/821-vfio-0010-vfio-fsl-mc-Map-the-VFIO-region-according-to-the-fla.patch new file mode 100644 index 0000000000..1ddbd8e985 --- /dev/null +++ b/target/linux/layerscape/patches-5.4/821-vfio-0010-vfio-fsl-mc-Map-the-VFIO-region-according-to-the-fla.patch @@ -0,0 +1,38 @@ +From 41a18521d40ed19c2e22d8e41cc427d18f082b71 Mon Sep 17 00:00:00 2001 +From: Diana Craciun <diana.craciun@nxp.com> +Date: Mon, 18 Nov 2019 16:32:08 +0200 +Subject: [PATCH] vfio/fsl-mc: Map the VFIO region according to the flags + received from mc firmware + +There are some VFIO regions which are cacheable (QMAN CENA region). +These regions should be mapped cacheable. + +Signed-off-by: Diana Craciun <diana.craciun@nxp.com> +--- + drivers/vfio/fsl-mc/vfio_fsl_mc.c | 8 +++++++- + 1 file changed, 7 insertions(+), 1 deletion(-) + +--- a/drivers/vfio/fsl-mc/vfio_fsl_mc.c ++++ b/drivers/vfio/fsl-mc/vfio_fsl_mc.c +@@ -106,6 +106,7 @@ static int vfio_fsl_mc_regions_init(stru + vdev->regions[i].flags |= VFIO_REGION_INFO_FLAG_READ; + if (!(mc_dev->regions[i].flags & IORESOURCE_READONLY)) + vdev->regions[i].flags |= VFIO_REGION_INFO_FLAG_WRITE; ++ vdev->regions[i].type = mc_dev->regions[i].flags & IORESOURCE_BITS; + } + + vdev->num_regions = mc_dev->obj_desc.region_count; +@@ -451,7 +452,12 @@ static int vfio_fsl_mc_mmap_mmio(struct + if (region.size < PAGE_SIZE || base + size > region.size) + return -EINVAL; + +- vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot); ++ if (region.type & DPRC_REGION_CACHEABLE) { ++ if (!(region.type & DPRC_REGION_SHAREABLE)) ++ vma->vm_page_prot = pgprot_cached_ns(vma->vm_page_prot); ++ } else ++ vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot); ++ + vma->vm_pgoff = (region.addr >> PAGE_SHIFT) + pgoff; + + return remap_pfn_range(vma, vma->vm_start, vma->vm_pgoff, |