[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] RE: [Xen-devel] Solaris and PVRDTSCP
I was afraid you might say that :-/ Ta, Paul > -----Original Message----- > From: Keir Fraser [mailto:keir.xen@xxxxxxxxx] > Sent: 01 July 2011 18:19 > To: Paul Durrant; xen-devel@xxxxxxxxxxxxxxxxxxx > Cc: Dan Magenheimer > Subject: Re: [Xen-devel] Solaris and PVRDTSCP > > On 01/07/2011 18:02, "Paul Durrant" <Paul.Durrant@xxxxxxxxxx> wrote: > > > Hi, > > > > I've been trying to figure out why my copy of s10u9 did not run > PV > > drivers when I installed it on Xen 4.1 when it was perfectly happy > on Xen 3.4... > > > > It turns out that the kernel is making a check that the maximal > Xen > > CPUID leaf is no greater than base + 2. This was true on Xen 3.4 > but > > when the PVRDTSCP patch was added it ceased to be true with the > > addition of the cpuid_time_leaf code. > > Clearly future versions of the Solaris kernel should revise this > > check but to allow this kernel to enable PV drivers I was > wondering > > what sort of workaround could be done. My current thoughts are > along > > the lines of disabling the extra CPUID leaf if tsc_mode is < > > TSC_MODE_PVRDTSCP. An alternative might be to introduce another > > tsc_mode that specifically causes the leaf to be obscured. > Thoughts? > > We might add other leaves in future. Best might be a domctl to > restrict max leaf per domain, and do all the relevant plumbing of > that through toolstacks. Fun. > > -- Keir > > > Paul > > > > _______________________________________________ > > Xen-devel mailing list > > Xen-devel@xxxxxxxxxxxxxxxxxxx > > http://lists.xensource.com/xen-devel > _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel
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