Avi Kivity wrote: > [Resurrecting post from the dead] > > > Marcelo Tosatti wrote: >> Forcing clustered APIC mode works only on SMP, and there were high CPU >> consumption on Windows SMP guests due to C3 state being reported (fixed >> in kvm-30 something). >> >> So perhaps: >> - Faking clustered APIC on SMP - Faking C3 on UP >> >> And turning of the TSC bit (for 32-bit guests). >> >> Is the way to go? >> Avi, do you understand why C3 was causing the Windows SMP problems ? >> >> > > It's probably inb()ing on the port in a loop. It's not SMP causing > the problems, but the ACPI HAL. I'll check this. >
Yes, it's reading 0xb010 and 0xb014, which ought to place the cpu in sleep mode, but don't. -- Do not meddle in the internals of kernels, for they are subtle and quick to panic. ------------------------------------------------------------------------- This SF.net email is sponsored by the 2008 JavaOne(SM) Conference Don't miss this year's exciting event. There's still time to save $100. Use priority code J8TL2D2. http://ad.doubleclick.net/clk;198757673;13503038;p?http://java.sun.com/javaone _______________________________________________ kvm-devel mailing list kvm-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/kvm-devel
