Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]
Groups > linux.kernel > #1522676
| From | Eric Auger <eric.auger@redhat.com> |
|---|---|
| Newsgroups | linux.kernel |
| Subject | [RFC v3 05/10] iommu: Do not map reserved regions |
| Date | 2016-11-15 14:20 +0100 |
| Message-ID | <sDLOx-5pg-1@gated-at.bofh.it> (permalink) |
| References | <sDLER-5lG-1@gated-at.bofh.it> |
| Organization | linux.* mail to news gateway |
As we introduced IOMMU_RESV_NOMAP and IOMMU_RESV_MSI regions,
let's prevent those new regions from being mapped.
Signed-off-by: Eric Auger <eric.auger@redhat.com>
---
drivers/iommu/iommu.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/drivers/iommu/iommu.c b/drivers/iommu/iommu.c
index 6ee529f..a4530ad 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->prot & IOMMU_RESV_MASK)
+ continue;
+
for (addr = start; addr < end; addr += pg_size) {
phys_addr_t phys_addr;
--
1.9.1
Back to linux.kernel | Previous | Next — Previous in thread | Next in thread | Find similar | Unroll thread
[RFC v3 00/10] KVM PCIe/MSI passthrough on ARM/ARM64 and IOVA reserved regions Eric Auger <eric.auger@redhat.com> - 2016-11-15 14:10 +0100 [RFC v3 02/10] iommu: Rename iommu_dm_regions into iommu_resv_regions Eric Auger <eric.auger@redhat.com> - 2016-11-15 14:10 +0100 [RFC v3 01/10] iommu/dma: Allow MSI-only cookies Eric Auger <eric.auger@redhat.com> - 2016-11-15 14:10 +0100 [RFC v3 05/10] iommu: Do not map reserved regions Eric Auger <eric.auger@redhat.com> - 2016-11-15 14:20 +0100 [RFC v3 08/10] iommu/vt-d: Implement reserved region get/put callbacks Eric Auger <eric.auger@redhat.com> - 2016-11-15 14:20 +0100 [RFC v3 10/10] vfio/type1: Get MSI cookie Eric Auger <eric.auger@redhat.com> - 2016-11-15 14:20 +0100 [RFC v3 09/10] iommu/arm-smmu: Implement reserved region get/put callbacks Eric Auger <eric.auger@redhat.com> - 2016-11-15 14:20 +0100 [RFC v3 03/10] iommu: Add new reserved IOMMU attributes Eric Auger <eric.auger@redhat.com> - 2016-11-15 14:20 +0100 [RFC v3 06/10] iommu: iommu_get_group_resv_regions Eric Auger <eric.auger@redhat.com> - 2016-11-15 14:20 +0100 [RFC v3 07/10] iommu: Implement reserved_regions iommu-group sysfs file Eric Auger <eric.auger@redhat.com> - 2016-11-15 14:20 +0100 [RFC v3 04/10] iommu: iommu_alloc_resv_region Eric Auger <eric.auger@redhat.com> - 2016-11-15 14:20 +0100 Re: [RFC v3 00/10] KVM PCIe/MSI passthrough on ARM/ARM64 and IOVA reserved regions Auger Eric <eric.auger@redhat.com> - 2016-11-18 09:40 +0100 RE: [RFC v3 00/10] KVM PCIe/MSI passthrough on ARM/ARM64 and IOVA reserved regions Bharat Bhushan <bharat.bhushan@nxp.com> - 2016-11-18 11:10 +0100
csiph-web