Re: [PATCH RESEND] KVM: nVMX: mask unrestricted_guest if disabled on L0

2015-03-17 Thread Kashyap Chamarthy
7e35 ("KVM: nVMX: Disable unrestricted mode if ept=0") > Cc: sta...@vger.kernel.org > Tested-By: Kashyap Chamarthy Thanks Radim, for resending it. I was trying to find it in one of the recent pull requests. :-) Just for forerence, test confirmation: http://article.gmane.org/g

Re: intel_pstate divide error with v3.13-rc4-256-gb7000ad

2013-12-30 Thread Kashyap Chamarthy
On 12/29/2013 04:04 PM, Rafael J. Wysocki wrote: > On Sunday, December 29, 2013 01:12:18 PM Kashyap Chamarthy wrote: >> [. . .] >> >>>> Here's host dmesg: https://bugzilla.kernel.org/attachment.cgi?id=119751 >>>> >>>>>> Can you ftrace t

Re: intel_pstate divide error with v3.13-rc4-256-gb7000ad

2013-12-29 Thread Kashyap Chamarthy
[. . .] >> Here's host dmesg: https://bugzilla.kernel.org/attachment.cgi?id=119751 >> Can you ftrace the failure? >> >> Can try, need some time (rest of the day I'll be away travelling, >> will try to do it over the weekend, and update the Kernel >> bugzilla with observations). >> >>> Ug

Re: intel_pstate divide error with v3.13-rc4-256-gb7000ad

2013-12-27 Thread Kashyap Chamarthy
On 12/27/2013 06:01 PM, Gleb Natapov wrote: > On Fri, Dec 27, 2013 at 06:52:48PM +0200, Gleb Natapov wrote: >> On Fri, Dec 27, 2013 at 03:15:39PM +0100, Kashyap Chamarthy wrote: >>> [. . .] >>> >>>>> KVM does not emulate P-states at all. intel_pstate_init

Re: intel_pstate divide error with v3.13-rc4-256-gb7000ad

2013-12-27 Thread Kashyap Chamarthy
[. . .] >> KVM does not emulate P-states at all. intel_pstate_init() calls >> intel_pstate_msrs_not_valid() before printing "Intel P-state driver >> initializing." which suppose to fail since it checks that two reads of >> MSR_IA32_APERF return different values, but KVM does not emulate this msr

Arbitrary host crash with kvm.git queue (8a3c1a33476f6bfebd07954e2277dbc88003bd37)

2013-10-09 Thread Kashyap Chamarthy
Heya, I've seen this crash thrice so far on an Intel Haswell machine while doing some nested virtualization tests (KVM on KVM). At this moment, I can't pin-point an to exact trigger. On two occasions, it crashed when I tried to reboot a guest hypervisor (as part of nested virtualization testing).