Re: [Qemu-devel] [Qemu-ppc] Migrating decrementer

[Mark Cave-Ayland]

On 25/02/16 04:33, Mark Cave-Ayland wrote:

> cpu_start/resume():
>     cpu->tb_env->tb_offset =
>         qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL) * tb_env->tb_freq +
>             cpu->tb_env->tb_offset -
>         qemu_clock_get_ns(QEMU_CLOCK_HOST)

Actually just realised this is slightly wrong and in fact should be:

cpu_start/resume():
    cpu->tb_env->tb_offset =
        muldiv64(qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL),
                 cpu->tb_env->tb_freq, NANOSECONDS_PER_SECOND) +
            cpu->tb_env->tb_offset -
        qemu_clock_get_ns(QEMU_CLOCK_HOST)


ATB,

Mark.