Re: [PATCH v8 05/18] iommu: Only map direct mapped regions

From: Tomasz Nowicki
Date: Tue Jan 17 2017 - 07:29:39 EST


On 11.01.2017 10:41, Eric Auger wrote:
As we introduced new reserved region types which do not require
mapping, let's make sure we only map direct mapped regions.

Signed-off-by: Eric Auger <eric.auger@xxxxxxxxxx>

Reviewed-by: Tomasz Nowicki <tomasz.nowicki@xxxxxxxxxxxxxxxxxx>

Thanks,
Tomasz


---

v3 -> v4:
- use region's type and reword commit message and title
---
drivers/iommu/iommu.c | 3 +++
1 file changed, 3 insertions(+)

diff --git a/drivers/iommu/iommu.c b/drivers/iommu/iommu.c
index 927878d..41c1906 100644
--- a/drivers/iommu/iommu.c
+++ b/drivers/iommu/iommu.c
@@ -343,6 +343,9 @@ static int iommu_group_create_direct_mappings(struct iommu_group *group,
start = ALIGN(entry->start, pg_size);
end = ALIGN(entry->start + entry->length, pg_size);

+ if (entry->type != IOMMU_RESV_DIRECT)
+ continue;
+
for (addr = start; addr < end; addr += pg_size) {
phys_addr_t phys_addr;