Re: [Qemu-devel] [RFC] darwin: work around sigfd
Am 30.05.2011 um 10:03 schrieb Paolo Bonzini: On 05/29/2011 06:50 PM, Andreas Färber wrote: Am 08.05.2011 um 11:15 schrieb Andreas Färber: Am 05.05.2011 um 15:15 schrieb Alexander Graf: On 05.05.2011, at 14:56, Paolo Bonzini wrote: On 05/05/2011 11:36 AM, Alexander Graf wrote: When running qemu-system on Darwin, the vcpu processes guest code, but I don't get to see anything on the cocoa screen. Out of curiosity, does it work with iothread? Seems to work with -nographic, yes. With cocoa it doesn't seem as happy :o. It certainly gets a lot further than without. -nographic has issues with --enable-io-thread, too. Ping? The patch is obviously masking the real issue, I don't think Alex meant it to be applied. Neither did I... I would really like to look at iothread under Mac OS X, but I just don't have the time right now. but I would expect whomever introduced this feature/breakage to comment on what might be going wrong and what we/I might try. Like I said, it happens with and without iothread enabled. The symptoms I'm seeing is that qemu-system-ppc[64] with -nographic - prom-env 'auto-boot?=false' hangs once the OpenBIOS prompt is displayed and keyboard input does not work, including Ctrl+a,x so that I have to kill the process the hard way. With Cocoa frontend, qemu with iothread gets to the Haiku desktop but is unusably sluggish (mouse movement and key presses take seconds to get processed) whereas without iothread it got stuck during boot splash already iirc. Andreas
Re: [Qemu-devel] [RFC] darwin: work around sigfd
Am 08.05.2011 um 11:15 schrieb Andreas Färber: Am 05.05.2011 um 15:15 schrieb Alexander Graf: On 05.05.2011, at 14:56, Paolo Bonzini wrote: On 05/05/2011 11:36 AM, Alexander Graf wrote: When running qemu-system on Darwin, the vcpu processes guest code, but I don't get to see anything on the cocoa screen. Out of curiosity, does it work with iothread? Seems to work with -nographic, yes. With cocoa it doesn't seem as happy :o. It certainly gets a lot further than without. -nographic has issues with --enable-io-thread, too. Ping?
Re: [Qemu-devel] [RFC] darwin: work around sigfd
On 05/08/2011 12:10 PM, Andreas Färber wrote: Alex, Am 08.05.2011 um 11:15 schrieb Andreas Färber: Am 05.05.2011 um 15:15 schrieb Alexander Graf: On 05.05.2011, at 14:56, Paolo Bonzini wrote: On 05/05/2011 11:36 AM, Alexander Graf wrote: When running qemu-system on Darwin, the vcpu processes guest code, but I don't get to see anything on the cocoa screen. Out of curiosity, does it work with iothread? Seems to work with -nographic, yes. With cocoa it doesn't seem as happy :o. It certainly gets a lot further than without. -nographic has issues with --enable-io-thread, too. It gets further than Cocoa though before it bails out. Actually, I'm still seeing issues with your patch as well. Might be multiple independent issues that have cropped up? In particular I'm observing that AIX on qemu-system-ppc - as reported by Kenneth - doesn't reach the point where it tells us the 32-bit CPU is incompatible. With your patch it is now possible to exit the QEMU process though. Any ppc64 guests don't even seem to enter OpenBIOS at all, whether OpenBIOS/ppc or OpenBIOS/ppc64. It seems there is a DSI exception when turning on the MMU in OpenBIOS (before any serial output occurs). Does that ring a bell with you, some pSeries change maybe? The pSeries changes did some cleanups to the MMU code, yes, but they looked pretty much sane to me. Are you running on a ppc64 host? Maybe there's some undefined corner case shifting happening :). Alex
Re: [Qemu-devel] [RFC] darwin: work around sigfd
Am 05.05.2011 um 15:15 schrieb Alexander Graf: On 05.05.2011, at 14:56, Paolo Bonzini wrote: On 05/05/2011 11:36 AM, Alexander Graf wrote: When running qemu-system on Darwin, the vcpu processes guest code, but I don't get to see anything on the cocoa screen. Out of curiosity, does it work with iothread? Seems to work with -nographic, yes. With cocoa it doesn't seem as happy :o. It certainly gets a lot further than without. -nographic has issues with --enable-io-thread, too. It gets further than Cocoa though before it bails out. Andreas
Re: [Qemu-devel] [RFC] darwin: work around sigfd
Alex, Am 08.05.2011 um 11:15 schrieb Andreas Färber: Am 05.05.2011 um 15:15 schrieb Alexander Graf: On 05.05.2011, at 14:56, Paolo Bonzini wrote: On 05/05/2011 11:36 AM, Alexander Graf wrote: When running qemu-system on Darwin, the vcpu processes guest code, but I don't get to see anything on the cocoa screen. Out of curiosity, does it work with iothread? Seems to work with -nographic, yes. With cocoa it doesn't seem as happy :o. It certainly gets a lot further than without. -nographic has issues with --enable-io-thread, too. It gets further than Cocoa though before it bails out. Actually, I'm still seeing issues with your patch as well. Might be multiple independent issues that have cropped up? In particular I'm observing that AIX on qemu-system-ppc - as reported by Kenneth - doesn't reach the point where it tells us the 32-bit CPU is incompatible. With your patch it is now possible to exit the QEMU process though. Any ppc64 guests don't even seem to enter OpenBIOS at all, whether OpenBIOS/ppc or OpenBIOS/ppc64. It seems there is a DSI exception when turning on the MMU in OpenBIOS (before any serial output occurs). Does that ring a bell with you, some pSeries change maybe? Andreas
Re: [Qemu-devel] [RFC] darwin: work around sigfd
On 05/05/2011 11:36 AM, Alexander Graf wrote: When running qemu-system on Darwin, the vcpu processes guest code, but I don't get to see anything on the cocoa screen. Out of curiosity, does it work with iothread? Paolo
Re: [Qemu-devel] [RFC] darwin: work around sigfd
On 05.05.2011, at 14:56, Paolo Bonzini wrote: On 05/05/2011 11:36 AM, Alexander Graf wrote: When running qemu-system on Darwin, the vcpu processes guest code, but I don't get to see anything on the cocoa screen. Out of curiosity, does it work with iothread? Seems to work with -nographic, yes. With cocoa it doesn't seem as happy :o. It certainly gets a lot further than without. Alex
Re: [Qemu-devel] [RFC] darwin: work around sigfd
On 05/05/2011 03:15 PM, Alexander Graf wrote: On 05.05.2011, at 14:56, Paolo Bonzini wrote: On 05/05/2011 11:36 AM, Alexander Graf wrote: When running qemu-system on Darwin, the vcpu processes guest code, but I don't get to see anything on the cocoa screen. Out of curiosity, does it work with iothread? Seems to work with -nographic, yes. With cocoa it doesn't seem as happy :o. It certainly gets a lot further than without. And SDL? Paolo
Re: [Qemu-devel] [RFC] darwin: work around sigfd
On 05.05.2011, at 15:23, Paolo Bonzini wrote: On 05/05/2011 03:15 PM, Alexander Graf wrote: On 05.05.2011, at 14:56, Paolo Bonzini wrote: On 05/05/2011 11:36 AM, Alexander Graf wrote: When running qemu-system on Darwin, the vcpu processes guest code, but I don't get to see anything on the cocoa screen. Out of curiosity, does it work with iothread? Seems to work with -nographic, yes. With cocoa it doesn't seem as happy :o. It certainly gets a lot further than without. And SDL? SDL doesn't compile on Mac OS X :). Otherwise we wouldn't have the cocoa backend. Alex
