On 04.08.2010, at 18:54, Avi Kivity wrote: > On 08/04/2010 07:45 PM, Alexander Graf wrote: >> >> I see two alternatives out of this mess: >> >> 1) Speed up string PIO so we're actually fast again. > > Certainly, the best option given that it needs no new interfaces, and improves the most workloads. > >> 2) Using a different interface (that could also be DMA fw_cfg - remember, we're on a private interface anyways) > > A guest/host interface is not private. fw_cfg is as private as it gets with host/guest interfaces. It's about as close as CPU specific MSRs or SMC chips. > >> Admittedly 1 would also help in more cases than just booting with -kernel and -initrd, but if that won't get us to acceptable levels (and yes, 8 seconds for 100MB is unacceptable) I don't see any way around 2. > > 3) don't use -kernel for 100MB or more. It's not the right tool. Why not? You're the one always ranting about caring about users. Now you get at least 3 users from the Qemu development community actually using a feature and you just claim it's wrong? Please, we've added way more useless features for worse reasons. Alex -- 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
