[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [Xen-devel] [PATCH 14/16] SUPPORT.md: Add statement on PCI passthrough
On 11/16/2017 03:43 PM, Julien Grall wrote: > Hi George, > > On 13/11/17 15:41, George Dunlap wrote: >> Signed-off-by: George Dunlap <george.dunlap@xxxxxxxxxx> >> --- >> CC: Ian Jackson <ian.jackson@xxxxxxxxxx> >> CC: Wei Liu <wei.liu2@xxxxxxxxxx> >> CC: Andrew Cooper <andrew.cooper3@xxxxxxxxxx> >> CC: Jan Beulich <jbeulich@xxxxxxxx> >> CC: Stefano Stabellini <sstabellini@xxxxxxxxxx> >> CC: Konrad Wilk <konrad.wilk@xxxxxxxxxx> >> CC: Tim Deegan <tim@xxxxxxx> >> CC: Rich Persaud <persaur@xxxxxxxxx> >> CC: Marek Marczykowski-Górecki <marmarek@xxxxxxxxxxxxxxxxxxxxxx> >> CC: Christopher Clark <christopher.w.clark@xxxxxxxxx> >> CC: James McKenzie <james.mckenzie@xxxxxxxxxxx> >> --- >> 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? No, I took this from a recommendation made to me, without checking. Rich, are you going to send a patch adding this file, or did you mean to point to a different file? -George _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxx https://lists.xen.org/xen-devel
|
![]() |
Lists.xenproject.org is hosted with RackSpace, monitoring our |