[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [Xen-devel] [PATCH v4 2/3] VT-d: Reduce spin timeout to 1ms, which can be boot-time changed.
>>> On 14.01.16 at 02:59, <quan.xu@xxxxxxxxx> wrote: > On 14.01.2016 at 12:58am, <JBeulich@xxxxxxxx> wrote: >> >>> On 23.12.15 at 09:25, <quan.xu@xxxxxxxxx> wrote: >> > --- a/xen/drivers/passthrough/vtd/qinval.c >> > +++ b/xen/drivers/passthrough/vtd/qinval.c >> > @@ -28,6 +28,11 @@ >> > #include "vtd.h" >> > #include "extern.h" >> > >> > +static int __read_mostly iommu_qi_timeout_ms = 1; >> > +integer_param("iommu_qi_timeout_ms", iommu_qi_timeout_ms); >> >> But wait - this needs to be accompanied by an entry in >> docs/misc/xen-command-line.markdown. >> > > Jan, Is the following right? No - you appear to add to the "iommu" option description. Either you need to change the implementation to match that (which probably would be a good idea, as that's what "iommu" is being used for in other cases), or you need to add a new standalone entry with the correct option name. Jan > --- a/docs/misc/xen-command-line.markdown > +++ b/docs/misc/xen-command-line.markdown > @@ -901,6 +901,14 @@ debug hypervisor only). > > >> Control the use of Queued Invalidation. > > +> `qi_timeout_ms` (VT-d) > + > +> Default: `1` > + > +> `= <integer>` > + > +>> Specify the timeout of the VT-d Queued Invalidation in ms. > + > > `snoop` (Intel) > > > Default: `true` > > > -Quan _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxx http://lists.xen.org/xen-devel
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