Hi George,
On 13/11/17 15:41, George Dunlap wrote:
Signed-off-by: George Dunlap <[email protected]>
---
CC: Ian Jackson <[email protected]>
CC: Wei Liu <[email protected]>
CC: Andrew Cooper <[email protected]>
CC: Jan Beulich <[email protected]>
CC: Stefano Stabellini <[email protected]>
CC: Konrad Wilk <[email protected]>
CC: Tim Deegan <[email protected]>
CC: Rich Persaud <[email protected]>
CC: Marek Marczykowski-Górecki <[email protected]>
CC: Christopher Clark <[email protected]>
CC: James McKenzie <[email protected]>
---
SUPPORT.md | 33 ++++++++++++++++++++++++++++++++-
1 file changed, 32 insertions(+), 1 deletion(-)
diff --git a/SUPPORT.md b/SUPPORT.md
index 3e352198ce..a8388f3dc5 100644
--- a/SUPPORT.md
+++ b/SUPPORT.md
@@ -454,9 +454,23 @@ there is currently no xl support.
## Security
+### Driver Domains
+
+ Status: Supported, with caveats
+
+"Driver domains" means allowing non-Domain 0 domains
+with access to physical devices to act as back-ends.
+
+See the appropriate "Device Passthrough" section
+for more information about security support.
+
### Device Model Stub Domains
- Status: Supported
+ Status: Supported, with caveats
+
+Vulnerabilities of a device model stub domain
+to a hostile driver domain (either compromised or untrusted)
+are excluded from security support.
### KCONFIG Expert
@@ -522,6 +536,23 @@ Virtual Performance Management Unit for HVM guests
Disabled by default (enable with hypervisor command line option).
This feature is not security supported: see
http://xenbits.xen.org/xsa/advisory-163.html
+### x86/PCI Device Passthrough
+
+ Status: Supported, with caveats
+
+Only systems using IOMMUs will be supported.
+
+Not compatible with migration, altp2m, introspection, memory sharing, or
memory paging.
+
+Because of hardware limitations
+(affecting any operating system or hypervisor),
+it is generally not safe to use this feature
+to expose a physical device to completely untrusted guests.
+However, this feature can still confer significant security benefit
+when used to remove drivers and backends from domain 0
+(i.e., Driver Domains).
+See docs/PCI-IOMMU-bugs.txt for more information.
Where can I find this file? Is it in staging?
Cheers,
--
Julien Grall
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