[Top][All Lists]
[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
[Qemu-devel] KVM call minutes for June 8
From: |
Chris Wright |
Subject: |
[Qemu-devel] KVM call minutes for June 8 |
Date: |
Tue, 8 Jun 2010 08:05:00 -0700 |
User-agent: |
Mutt/1.5.20 (2009-08-17) |
Accelerating counters (aka moving PIT to userspace, keeping HPET in
userspace)
- PIT (in-kernel, userspace, or split)
- userspace PIT, too slow
- kernel PIT (already seen bugs)
- split PIT, not realistic w/out a sane interface (see bugs above)
- exit to userspace is a base cost, add MSR save/restore, add qemu
overhead...and exit to userspace is expensive
- hpet in userspace (at least minimal counter reading)
- ioapic
- less than half is architectural, more than half endds of being
interrupt reinjection
Live migration + hotplug
- start a machine, hotplug device, allocate ram...can't migrate
- last_offset and ramblock sections coming from cmdline may not be
compatible w/ hotplug
- worst case is different ramblock order and data corruption
- alex has patches to convert ramblocks into queuelist
- give name, offset
- will clean up and send out today
migration events?
- QMP (wire protocol) has nice async events
- QError reasonable
- migration is async command, can complete w/ error or success
- QMP broken for error
- need context for error, default is monitor, but async command
- redo qerror_report, propagate error (or always have error context
available)
- monitor and qmp done w/ same dispatch functions
- should do monitor in terms of qmp
- every qerror replacing monitor printf error
- ends up not sharing enough ($foo not found, where $foo is contextual)
- async command (pass in command completion)
- may have to do limited (throw away for 0.13 and redo properly for 0.14)
- anthony has a (not fully working) tree, and will document direction on wiki
migration subsections.
- stable IDE version 3 is different for <= 0.12.2 than > 0.12.2
- for stable could bump to version 4, blacklist version 3
- unstable IDE version 4, works
APIC wiring problems (attached slides)
- postponed until tomorrow's code overview slot
- [Qemu-devel] KVM call minutes for June 8,
Chris Wright <=
- [Qemu-devel] Re: KVM call minutes for June 8, Anthony Liguori, 2010/06/08
- Re: [Qemu-devel] Re: KVM call minutes for June 8, Luiz Capitulino, 2010/06/08
- Re: [Qemu-devel] Re: KVM call minutes for June 8, Anthony Liguori, 2010/06/08
- Re: [Qemu-devel] Re: KVM call minutes for June 8, Luiz Capitulino, 2010/06/09
- Re: [Qemu-devel] Re: KVM call minutes for June 8, Daniel P. Berrange, 2010/06/09
- Re: [Qemu-devel] Re: KVM call minutes for June 8, Anthony Liguori, 2010/06/09
- Re: [Qemu-devel] Re: KVM call minutes for June 8, Daniel P. Berrange, 2010/06/09
- Re: [Qemu-devel] Re: KVM call minutes for June 8, Kevin Wolf, 2010/06/10
- Re: [Qemu-devel] Re: KVM call minutes for June 8, Anthony Liguori, 2010/06/10
- Re: [Qemu-devel] Re: KVM call minutes for June 8, Kevin Wolf, 2010/06/10