----- Original Message ----- > From: "Yu Zhang" <yu.c.zhang@xxxxxxxxxxxxxxx> > To: "Paolo Bonzini" <pbonzini@xxxxxxxxxx> > Cc: "qian ouyang" <qian.ouyang@xxxxxxxxx>, linux-kernel@xxxxxxxxxxxxxxx, kvm@xxxxxxxxxxxxxxx > Sent: Wednesday, March 1, 2017 10:04:17 AM > Subject: Re: [RFC PATCH 0/4] KVM: Emulate UMIP (or almost do so) > > > > On 12/13/2016 7:03 PM, Paolo Bonzini wrote: > > > > On 13/12/2016 05:03, Li, Liang Z wrote: > >> Hi Paolo, > >> > >> We intended to enable UMIP for KVM and found you had already worked on it. > >> Do you have any plan for the following patch set? It's there anything else > >> you expect > >> us help to do? > > Yes, I plan to resend these patches for 4.11. > > Hi Paolo, > > Previously we saw your RFC patches of UMIP sent out, and we would > like to try some unit test in Intel. I found a patch written by you in > https://patchwork.kernel.org/patch/9225929/, guess this is for the kvm > unit test(though I failed to git apply it directly). > And I wonder, when will it be integrated to kvm unit test repo? Probably together with the patches for UMIP support and emulation. > Besides, is this all the test for UMIP unit test? I.e. do we need to > construct a scenario in the test to trigger vm exit and let hypervisor > inject a GP fault? - I did not see this scenario in this patch. Or any > other suggestions? :-) The unit test only tests that UMIP works as advertised; if the host processor does not support UMIP, it will test the hypervisor emulation path. Whenever UMIP support is added to KVM, we will probably add a module parameter so that we can force UMIP emulation path even on processor that have native support. Paolo
