On 2015-05-26 03:37, Yong Wang wrote: > On Mon, May 25, 2015 at 03:24:05PM +0200, Paolo Bonzini wrote: >> -----BEGIN PGP SIGNED MESSAGE----- >> Hash: SHA256 >> >> >> >> On 24/05/2015 17:22, Jan Kiszka wrote: >>> From: Jan Kiszka <jan.kiszka@xxxxxxxxxxx> >>> >>> There is no reason to deny this feature to guests. We are >>> emulating the APIC timer, thus are exposing it without stops in >>> power-saving states. >>> >>> Signed-off-by: Jan Kiszka <jan.kiszka@xxxxxxxxxxx> >> >> Thanks, looks good. >> > > What's the motivation of exposing ARAT to guests? First of all, another step towards feature correctness for real CPU models. But I also have a setup where Linux only has APICs as clockevents (Jailhouse non-root cells), thus has no broadcast source. In that case it depends on ARAT to switch to highres mode. Jan
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