Messages in this thread | | | Date | Wed, 07 Oct 2009 23:08:03 +0200 | From | Avi Kivity <> | Subject | Re: [Xen-devel] Re: [PATCH 3/5] x86/pvclock: add vsyscall implementation |
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On 10/07/2009 10:48 PM, Dan Magenheimer wrote: >> We can support them by falling back to the kernel. I'm a bit worried >> about the kernel playing with the hypervisor's version field. It's >> better to introduce yet a new version for the kernel, and check both. >> > On Nehalem, apps that need timestamp information at a high > frequency will likely use rdtsc/rdtscp directly. > >
Then they will get incorrect timing once they are live migrated.
-- I have a truly marvellous patch that fixes the bug which this signature is too narrow to contain.
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