Re: [PATCH V2 1/1] X86: Hyper-V: Get the local APIC timer frequency from the hypervisor

2013-09-17 Thread Gleb Natapov
On Tue, Sep 17, 2013 at 07:53:36PM +, KY Srinivasan wrote: > > > Thanks Gleb. Here is the link for the latest Hyper-V specification: > > > http://www.microsoft.com/en-us/download/details.aspx?id=39289 > > > > > > This spec talks about how migration is handled with regards to TSC. > > > > > All

Re: [PATCH V2 1/1] X86: Hyper-V: Get the local APIC timer frequency from the hypervisor

2013-09-17 Thread Gleb Natapov
On Fri, Sep 13, 2013 at 02:28:35PM +, KY Srinivasan wrote: > > > > -Original Message- > > From: Gleb Natapov [mailto:g...@redhat.com] > > Sent: Friday, September 13, 2013 2:55 AM > > To: KY Srinivasan > > Cc: H. Peter Anvin; x...@kernel.org; gre...

Re: [PATCH V2 1/1] X86: Hyper-V: Get the local APIC timer frequency from the hypervisor

2013-09-13 Thread Gleb Natapov
On Fri, Sep 13, 2013 at 01:43:09AM +, KY Srinivasan wrote: > > > > -Original Message- > > From: H. Peter Anvin [mailto:h...@zytor.com] > > Sent: Thursday, September 12, 2013 5:28 PM > > To: KY Srinivasan > > Cc: x...@kernel.org; gre...@linuxfoundation.org; > > linux-ker...@vger.kerne

Re: [PATCH V2 1/1] X86: Hyper-V: Get the local APIC timer frequency from the hypervisor

2013-09-05 Thread Gleb Natapov
On Wed, Sep 04, 2013 at 03:16:30PM +, KY Srinivasan wrote: > > > > -Original Message- > > From: Gleb Natapov [mailto:g...@redhat.com] > > Sent: Wednesday, September 04, 2013 2:40 AM > > To: KY Srinivasan > > Cc: x...@kernel.org; gre...

Re: [PATCH V2 1/1] X86: Hyper-V: Get the local APIC timer frequency from the hypervisor

2013-09-04 Thread Gleb Natapov
On Tue, Sep 03, 2013 at 11:30:23AM -0700, K. Y. Srinivasan wrote: > Hyper-V supports a mechanism for retrieving the local APIC frequency.Use this > and bypass > the calibration code in the kernel. This would allow us to boot the Linux > kernel as a > "modern VM" on Hyper-V where many of the legac