Re: [Qemu-devel] [PATCH v3] kvmclock: update system_time_msr address forcibly

2017-05-29 Thread Roman Kagan
On Mon, May 29, 2017 at 01:49:04PM +0300, Denis Plotnikov wrote: > Do an update of system_time_msr address every time before reading > the value of tsc_timestamp from guest's kvmclock page. > > There is no other code paths which ensure that qemu has an up-to-date > value of system_time_msr. So,

[Qemu-devel] [PATCH v3] kvmclock: update system_time_msr address forcibly

2017-05-29 Thread Denis Plotnikov
Do an update of system_time_msr address every time before reading the value of tsc_timestamp from guest's kvmclock page. There is no other code paths which ensure that qemu has an up-to-date value of system_time_msr. So, force this update on guest's tsc_timestamp reading. This bug causes effect