Re: [Qemu-devel] Ensuring data is written to disk

2006-08-07 Thread R. Armiento
Jens Axboe wrote: On Tue, Aug 01 2006, Jamie Lokier wrote: Should we change to only reiserfs and expect fsync() to commit data reliably only with that fs? I realise this is a lot of difficult questions, that apply to more than just Qemu... Yes, reiser is the only one that works reliably

Re: [Qemu-devel] Ensuring data is written to disk

2006-08-07 Thread R. Armiento
Thomas Steffen wrote: On 8/7/06, R. Armiento [EMAIL PROTECTED] wrote: And some IDE disks do not let you switch off write-caching. So as far as I know, you need SCSI for transactional guarantees. I don't think the fact that there are some buggy drives/firmwares out there should be taken

Re: [Qemu-devel] add 'monitor' and 'mwait' instruction (update)

2006-07-09 Thread R. Armiento
R. Armiento wrote: Couldn't there be situations where someone depends on mwait waking up without there being an event that wakes hlt? Or are we sure qemu's hlt will happen to wake up anyway? Joachim Henke wrote: Currently the Linux kernel simply uses monitor/mwait as a faster 'hlt

Re: [Qemu-devel] [PATCH] add 'monitor' and 'mwait' instruction (update)

2006-07-08 Thread R. Armiento
Hi, Joachim Henke wrote: Please use the updated patch attached below. Great work! The patch fixes the kernel panic for me. Thank you. However, as you probably know, despite not declaring MONITOR in qemu, kqemu sees MONITOR on the host processor and Linux CPU usage will still be 100%, even

Re: [Qemu-devel] add 'monitor' and 'mwait' instruction (update)

2006-07-08 Thread R. Armiento
Hi, Again, thank you for helping out with updated patches, it is much appreciated. Joachim Henke wrote: R. Armiento wrote: So even with your patch applied one should use the 'idle=halt' kernel parameter when booting Linux with -kernel-kqemu on newer processors. [...] To lower the cpu usage

Re: [Qemu-devel] Pentium D with guest Ubuntu 6.06 server kernel panic with kqemu

2006-07-07 Thread R. Armiento
R. Armiento wrote: The error looks very similar to the one reported here: http://www.mail-archive.com/qemu-devel@nongnu.org/msg03964.html But I believe that reported issue should not appear in recent qemu, since SSE3 is now emulated (right?). (At least the patch in the end of that thread