On Tue, Sep 06, 2011 at 07:06:34PM +0300, Avi Kivity wrote: > On 09/06/2011 07:01 PM, Nikola Ciprich wrote: > >> 404 > >ouch, dumb me :-/ > >http://nelide.cz/downloads/nik/trace.dat.bz2 > >sorry > >n. > > > > qemu-kvm-4618 [000] 13698.803169: kvm_emulate_insn: > 0:806edb12: rep outsw > qemu-kvm-4618 [000] 13698.803170: kvm_pio: > pio_write at 0x1f0 size 2 count 1 > qemu-kvm-4618 [000] 13698.803171: kvm_userspace_exit: > reason KVM_EXIT_IO (2) > qemu-kvm-4618 [000] 13698.803186: kvm_entry: vcpu 0 > qemu-kvm-4618 [000] 13698.803189: kvm_exit: > reason IO_INSTRUCTION rip 0x806edb12 info 1f00031 0 > > qemu-kvm-4618 [000] 13698.803191: kvm_emulate_insn: > 0:806edb12: rep outsw > qemu-kvm-4618 [000] 13698.803192: kvm_pio: > pio_write at 0x1f0 size 2 count 1 > qemu-kvm-4618 [000] 13698.803193: kvm_userspace_exit: > reason KVM_EXIT_IO (2) > qemu-kvm-4618 [000] 13698.803195: kvm_entry: vcpu 0 > qemu-kvm-4618 [000] 13698.803198: kvm_exit: > reason IO_INSTRUCTION rip 0x806edb12 info 1f00031 0 > > > One of your guests is using IDE PIO instead of DMA. Switch it back to DMA. > > Gleb, is rep/outsw our pio regression or was it another instruction? > It is rep/in-out. But why it became noticeable only after adding more physical memory to the host is a mystery. -- Gleb. -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
