[Qemu-devel] [Bug 524447] Re: virsh save is very slow

2010-08-03 Thread Frederic Van Espen
Iggy, which patch exactly? I don't seem to be able to find it. -- virsh save is very slow https://bugs.launchpad.net/bugs/524447 You received this bug notification because you are a member of qemu- devel-ml, which is subscribed to QEMU. Status in libvirt virtualization API: Unknown Status in QEM

[Qemu-devel] Questions about networking

2010-08-03 Thread Peter Niessen
Dear List, I'm trying to set up a testbed for batch systems using qemu-kvm. So far, I've created two machines, a master ("torque") and an execution host ("mom") for use with torque. I'm using the following command lines to start up the virtual machines: qemu-kvm -smp 2 -m 768 -hda ./torque.qcow2

Re: [Qemu-devel] RFC adding ioctl's to virtserial/virtconsole

2010-08-03 Thread Gerd Hoffmann
Hi, My main objection to ioctls is that you change states based on event delivery. This results in weird things like what happens when you do a chr_write while not ready or not connected. So what I'd rather see is a move to an API that was connection oriented. For instance, we could treat Cha

Re: [Qemu-devel] [PATCH] move 'unsafe' to end of caching modes in help

2010-08-03 Thread Richard W.M. Jones
On Tue, Jul 27, 2010 at 10:26:10AM +0200, Markus Armbruster wrote: > Anthony Liguori writes: > > > On 07/26/2010 02:19 PM, Avi Kivity wrote: > [...] > >> Regardless, outside of Windows users qemu will mostly be consumed > >> via distribution branches, with different levels of backport > >> happin

[Qemu-devel] Re: [PATCH] docs: Improve documentation

2010-08-03 Thread Juan Quintela
Stefan Weil wrote: > Fix some inconsistencies (tabs and punctuation) > and try to improve grammar and spelling. > > Cc: Juan Quintela > Signed-off-by: Stefan Weil Acked-by: Juan Quintela Anthony, please apply. Stefan, thanks very much for the improvements. Later, Juan.

Re: [Qemu-devel] [PATCHv3] Load "bootsplash.jpg" if present

2010-08-03 Thread Richard W.M. Jones
On Mon, Aug 02, 2010 at 12:47:53PM -0400, Kevin O'Connor wrote: > On Mon, Aug 02, 2010 at 11:33:33AM -0500, Anthony Liguori wrote: > > On 08/02/2010 11:11 AM, Kevin O'Connor wrote: > > >Load the "bootsplash.jpg" file into fw_cfg if it is found in the roms > > >directory. > > > > Sorry, I should ha

[Qemu-devel] [Bug 612901] [NEW] Qemu doesn't implement SCSI READ DISC INFORMATION command (0x51) Qemu reports: SK=5h/ASC=20h/ACQ=00h

2010-08-03 Thread Jasper Hartline
Public bug reported: # /lib/udev/cdrom_id --debug /dev/sr0 /lib/udev/cdrom_id --debug /dev/sr0 main: probing: '/dev/sr0' cd_inquiry: INQUIRY: [QEMU][QEMU DVD-ROM][0.12] cd_profiles: GET CONFIGURATION: size of features buffer 0x0010 cd_profiles: GET CONFIGURATION: feature 'profiles', with 2

[Qemu-devel] Anyone seeing huge slowdown launching qemu with Linux 2.6.35?

2010-08-03 Thread Richard W.M. Jones
qemu compiled from today's git. Using the following command line: $qemudir/x86_64-softmmu/qemu-system-x86_64 -L $qemudir/pc-bios \ -drive file=/dev/null,if=virtio \ -enable-kvm \ -nodefaults \ -nographic \ -serial stdio \ -m 500 \ -no-reboot \ -no-hpet \ -net

Re: [Qemu-devel] Anyone seeing huge slowdown launching qemu with Linux 2.6.35?

2010-08-03 Thread Gleb Natapov
On Tue, Aug 03, 2010 at 12:13:06PM +0100, Richard W.M. Jones wrote: > > qemu compiled from today's git. Using the following command line: > > $qemudir/x86_64-softmmu/qemu-system-x86_64 -L $qemudir/pc-bios \ > -drive file=/dev/null,if=virtio \ > -enable-kvm \ > -nodefaults \ > -no

[Qemu-devel] Re: [PATCH] e1000: Fix hotplug

2010-08-03 Thread Glauber Costa
On Mon, Aug 02, 2010 at 03:15:17PM -0600, Alex Williamson wrote: > When we hotplug the device, > we don't go through a reset cycle, which means a hot added e1000 is > useless until the VM reboots. I do guess, however, that this is true for any device, right? Wouldn't it be better to just call t

[Qemu-devel] [PATCH] Block: Support creation of SCSI VMDK images in qemu-img.

2010-08-03 Thread Alexander Graf
While looking through patches we have not upstreamed yet, I stumbled over this trivial patch that Kevin created back in the day. It allows to specify the creation of scsi type vmdk images. Signed-off-by: Alexander Graf --- block/vmdk.c | 12 ++-- block_int.h |2 ++ 2 files changed

Re: [Qemu-devel] Anyone seeing huge slowdown launching qemu with Linux 2.6.35?

2010-08-03 Thread Richard W.M. Jones
On Tue, Aug 03, 2010 at 02:33:02PM +0300, Gleb Natapov wrote: > On Tue, Aug 03, 2010 at 12:13:06PM +0100, Richard W.M. Jones wrote: > > > > qemu compiled from today's git. Using the following command line: > > > > $qemudir/x86_64-softmmu/qemu-system-x86_64 -L $qemudir/pc-bios \ > > -drive fi

Re: [Qemu-devel] Anyone seeing huge slowdown launching qemu with Linux 2.6.35?

2010-08-03 Thread Gleb Natapov
On Tue, Aug 03, 2010 at 01:10:00PM +0100, Richard W.M. Jones wrote: > On Tue, Aug 03, 2010 at 02:33:02PM +0300, Gleb Natapov wrote: > > On Tue, Aug 03, 2010 at 12:13:06PM +0100, Richard W.M. Jones wrote: > > > > > > qemu compiled from today's git. Using the following command line: > > > > > > $q

[Qemu-devel] Re: [PATCHv3] Load "bootsplash.jpg" if present

2010-08-03 Thread Paolo Bonzini
On 08/02/2010 06:47 PM, Kevin O'Connor wrote: On Mon, Aug 02, 2010 at 11:33:33AM -0500, Anthony Liguori wrote: On 08/02/2010 11:11 AM, Kevin O'Connor wrote: Load the "bootsplash.jpg" file into fw_cfg if it is found in the roms directory. Sorry, I should have provided this in the first respons

[Qemu-devel] Re: [PATCH] Block: Support creation of SCSI VMDK images in qemu-img.

2010-08-03 Thread Kevin Wolf
Hi Alex, Am 03.08.2010 14:17, schrieb Alexander Graf: > While looking through patches we have not upstreamed yet, I stumbled over this > trivial patch that Kevin created back in the day. It allows to specify the > creation of scsi type vmdk images. > > Signed-off-by: Alexander Graf Aaron (CCed)

Re: [Qemu-devel] Anyone seeing huge slowdown launching qemu with Linux 2.6.35?

2010-08-03 Thread Richard W.M. Jones
On Tue, Aug 03, 2010 at 03:37:14PM +0300, Gleb Natapov wrote: > On Tue, Aug 03, 2010 at 01:10:00PM +0100, Richard W.M. Jones wrote: > > I can't see anything about this in the kernel changelog. Can you > > point me to the commit or the key phrase to look for? > > > 7972995b0c346de76 Thanks - I se

Re: [Qemu-devel] [PATCHv3] Load "bootsplash.jpg" if present

2010-08-03 Thread Anthony Liguori
On 08/03/2010 04:52 AM, Richard W.M. Jones wrote: On Mon, Aug 02, 2010 at 12:47:53PM -0400, Kevin O'Connor wrote: On Mon, Aug 02, 2010 at 11:33:33AM -0500, Anthony Liguori wrote: On 08/02/2010 11:11 AM, Kevin O'Connor wrote: Load the "bootsplash.jpg" file into fw_cfg if it is

Re: [Qemu-devel] [PATCHv3] Load "bootsplash.jpg" if present

2010-08-03 Thread Richard W.M. Jones
On Tue, Aug 03, 2010 at 07:51:02AM -0500, Anthony Liguori wrote: > If menu=off, it probably just shouldn't display. I assume > libguestfs is passing menu=off... We don't actually, but it is a tremendously good idea so I'll add it, thanks :-) Rich. -- Richard Jones, Virtualization Group, Red Ha

[Qemu-devel] [PATCH REPOST] Don't call fw_cfg e->callback if e->callback is NULL.

2010-08-03 Thread Richard W.M. Jones
This is just a plain and obvious bug in fw_cfg. It's not currently hit because there are no writable entries in fw_cfg at the moment, but as soon as you add one, you hit this segfault. Rich. -- Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones virt-p2v converts phys

Re: [Qemu-devel] Re: [PATCH] QEMUFileBuffered: indicate that we're ready when the underlying file is ready

2010-08-03 Thread Luiz Capitulino
On Tue, 03 Aug 2010 09:12:52 +0300 Avi Kivity wrote: > On 07/07/2010 07:44 PM, Avi Kivity wrote: > > QEMUFileBuffered stops writing when the underlying QEMUFile is not ready, > > and tells its producer so. However, when the underlying QEMUFile becomes > > ready, it neglects to pass that inform

Re: [Qemu-devel] KVM call agenda for August 3

2010-08-03 Thread Luiz Capitulino
On Tue, 03 Aug 2010 01:46:01 +0200 Juan Quintela wrote: > > Please send in any agenda items you are interested in covering. - 0.13 Let's keep remembering Anthony ;-) > > thanks, > > Juan >

Re: [Qemu-devel] [PATCHv3] Load "bootsplash.jpg" if present

2010-08-03 Thread Richard W.M. Jones
On Tue, Aug 03, 2010 at 01:54:12PM +0100, Richard W.M. Jones wrote: > On Tue, Aug 03, 2010 at 07:51:02AM -0500, Anthony Liguori wrote: > > If menu=off, it probably just shouldn't display. I assume > > libguestfs is passing menu=off... > > We don't actually, but it is a tremendously good idea so I

Re: [Qemu-devel] RFC adding ioctl's to virtserial/virtconsole

2010-08-03 Thread Anthony Liguori
On 08/03/2010 03:46 AM, Gerd Hoffmann wrote: Hi, My main objection to ioctls is that you change states based on event delivery. This results in weird things like what happens when you do a chr_write while not ready or not connected. So what I'd rather see is a move to an API that was connect

[Qemu-devel] Re: [PATCH] Block: Support creation of SCSI VMDK images in qemu-img.

2010-08-03 Thread Alexander Graf
Am 03.08.2010 um 14:47 schrieb Kevin Wolf : Hi Alex, Am 03.08.2010 14:17, schrieb Alexander Graf: While looking through patches we have not upstreamed yet, I stumbled over this trivial patch that Kevin created back in the day. It allows to specify the creation of scsi type vmdk images. S

Re: [Qemu-devel] KVM call agenda for August 3

2010-08-03 Thread Avi Kivity
On 08/03/2010 04:01 PM, Luiz Capitulino wrote: On Tue, 03 Aug 2010 01:46:01 +0200 Juan Quintela wrote: Please send in any agenda items you are interested in covering. - 0.13 More specifically, 0.13-rc0. Tagged but not announced? I'd like to announce it so people can start testing it.

Re: [Qemu-devel] Anyone seeing huge slowdown launching qemu with Linux 2.6.35?

2010-08-03 Thread Avi Kivity
On 08/03/2010 03:48 PM, Richard W.M. Jones wrote: Thanks for the explanation. I'll repost my "DMA"-like fw-cfg patch once I've rebased it and done some more testing. This huge regression for a common operation (implementing -initrd) needs to be solved without using inb/rep ins. Adding more

Re: [Qemu-devel] KVM call agenda for August 3

2010-08-03 Thread Anthony Liguori
On 08/03/2010 08:16 AM, Avi Kivity wrote: On 08/03/2010 04:01 PM, Luiz Capitulino wrote: On Tue, 03 Aug 2010 01:46:01 +0200 Juan Quintela wrote: Please send in any agenda items you are interested in covering. - 0.13 More specifically, 0.13-rc0. Tagged but not announced? I'd like to ann

Re: [Qemu-devel] [PATCHv3] Load "bootsplash.jpg" if present

2010-08-03 Thread Anthony Liguori
On 08/03/2010 08:04 AM, Richard W.M. Jones wrote: On Tue, Aug 03, 2010 at 01:54:12PM +0100, Richard W.M. Jones wrote: On Tue, Aug 03, 2010 at 07:51:02AM -0500, Anthony Liguori wrote: If menu=off, it probably just shouldn't display. I assume libguestfs is passing menu=off...

Re: [Qemu-devel] KVM call agenda for August 3

2010-08-03 Thread Avi Kivity
On 08/03/2010 04:31 PM, Anthony Liguori wrote: On 08/03/2010 08:16 AM, Avi Kivity wrote: On 08/03/2010 04:01 PM, Luiz Capitulino wrote: On Tue, 03 Aug 2010 01:46:01 +0200 Juan Quintela wrote: Please send in any agenda items you are interested in covering. - 0.13 More specifically, 0.13-

[Qemu-devel] RE: [PATCH] Block: Support creation of SCSI VMDK images in qemu-img.

2010-08-03 Thread Aaron Mason
Hi Kevin, Yep, I'll be resubmitting that patch in the coming days. I thought I'd nuked all of the tabs but neglected to check if I was editing the file in the git repo and not the 0.12.5 stable branch... Also, I'm new to using git so I'm picking this up as I go along. Expect a patch from me

Re: [Qemu-devel] Anyone seeing huge slowdown launching qemu with Linux 2.6.35?

2010-08-03 Thread Richard W.M. Jones
On Tue, Aug 03, 2010 at 04:19:39PM +0300, Avi Kivity wrote: > On 08/03/2010 03:48 PM, Richard W.M. Jones wrote: > > > >Thanks for the explanation. I'll repost my "DMA"-like fw-cfg patch > >once I've rebased it and done some more testing. This huge regression > >for a common operation (implementi

Re: [Qemu-devel] RFC adding ioctl's to virtserial/virtconsole

2010-08-03 Thread Alon Levy
- "Anthony Liguori" wrote: > On 08/03/2010 03:46 AM, Gerd Hoffmann wrote: > > Hi, > > > >> My main objection to ioctls is that you change states based on > event > >> delivery. This results in weird things like what happens when you > do a > >> chr_write while not ready or not connected. >

Re: [Qemu-devel] [Tracing][PATCH] Add options to specify trace file name at startup and runtime.

2010-08-03 Thread Stefan Hajnoczi
On Tue, Aug 3, 2010 at 6:37 AM, Prerna Saxena wrote: > This patch adds an optional command line switch '-trace' to specify the > filename to write traces to, when qemu starts. > Eg, If compiled with the 'simple' trace backend, > [t...@system]$ qemu -trace FILENAME IMAGE > Allows the binary traces

Re: [Qemu-devel] KVM call agenda for August 3

2010-08-03 Thread Anthony Liguori
On 08/03/2010 08:49 AM, Avi Kivity wrote: On 08/03/2010 04:31 PM, Anthony Liguori wrote: On 08/03/2010 08:16 AM, Avi Kivity wrote: On 08/03/2010 04:01 PM, Luiz Capitulino wrote: On Tue, 03 Aug 2010 01:46:01 +0200 Juan Quintela wrote: Please send in any agenda items you are interested in c

Re: [Qemu-devel] KVM call agenda for August 3

2010-08-03 Thread Avi Kivity
On 08/03/2010 05:25 PM, Anthony Liguori wrote: I meant users. Many users avoid git and test tarballs which come from an announcement instead. Same for distros, things like rawhide can package an -rc0. -rc0 is available in rawhide FWIW. Cool. -- error compiling committee.c: too many arg

[Qemu-devel] Re: [PATCH] Block: Support creation of SCSI VMDK images in qemu-img.

2010-08-03 Thread Kevin Wolf
Hi Aaron, Am 03.08.2010 15:57, schrieb Aaron Mason: > Yep, I'll be resubmitting that patch in the coming days. I thought I'd nuked > all of the tabs but neglected to check if I was editing the file in the git > repo and not the 0.12.5 stable branch... > > Also, I'm new to using git so I'm pick

Re: [Qemu-devel] Anyone seeing huge slowdown launching qemu with Linux 2.6.35?

2010-08-03 Thread Avi Kivity
On 08/03/2010 05:05 PM, Richard W.M. Jones wrote: On Tue, Aug 03, 2010 at 04:19:39PM +0300, Avi Kivity wrote: On 08/03/2010 03:48 PM, Richard W.M. Jones wrote: Thanks for the explanation. I'll repost my "DMA"-like fw-cfg patch once I've rebased it and done some more testing. This huge regr

[Qemu-devel] [PATCH 3/6] block migration: replace tabs by spaces.

2010-08-03 Thread Kevin Wolf
From: Yoshiaki Tamura Signed-off-by: Yoshiaki Tamura Signed-off-by: Kevin Wolf --- block-migration.c | 12 ++-- 1 files changed, 6 insertions(+), 6 deletions(-) diff --git a/block-migration.c b/block-migration.c index 8eda307..0bfdb73 100644 --- a/block-migration.c +++ b/block-migra

[Qemu-devel] [PATCH 2/6] loadvm: improve tests before bdrv_snapshot_goto()

2010-08-03 Thread Kevin Wolf
From: Miguel Di Ciurcio Filho This patch improves the resilience of the load_vmstate() function, doing further and better ordered tests. In load_vmstate(), if there is any error on bdrv_snapshot_goto(), except if the error is on VM state device, load_vmstate() will return zero and the VM will be

[Qemu-devel] [PATCH 1/6] block: Change bdrv_commit to handle multiple sectors at once

2010-08-03 Thread Kevin Wolf
bdrv_commit copies the image to its backing file sector by sector, which is (surprise!) relatively slow. Let's take a larger buffer and handle more sectors at once if possible. With a 1G qcow2 file, this brought the time bdrv_commit takes down from 5:06 min to 1:14 min for me. Signed-off-by: Kevi

[Qemu-devel] [PULL 0/6] Block patches

2010-08-03 Thread Kevin Wolf
The following changes since commit 5933e8a96ab9c59cb6b6c80c9db385364a68c959: fix last cpu timer initialization (2010-08-02 18:49:13 +) are available in the git repository at: git://repo.or.cz/qemu/kevin.git for-anthony Andrea Arcangeli (1): ide: Avoid canceling IDE DMA Kevin Wolf

[Qemu-devel] [PATCH 4/6] block: Fix bdrv_has_zero_init

2010-08-03 Thread Kevin Wolf
Assuming that any image on a block device is not properly zero-initialized is actually wrong: Only raw images have this problem. Any other image format shouldn't care about it, they initialize everything properly themselves. Signed-off-by: Kevin Wolf --- block.c |6 ++ block/ra

[Qemu-devel] [PATCH 6/6] ide: Avoid canceling IDE DMA

2010-08-03 Thread Kevin Wolf
From: Andrea Arcangeli The reason for not actually canceling the I/O is because with virtualization and lots of VM running, a guest fs may mistake a overload of the host, as an IDE timeout. So rather than canceling the I/O, it's safer to wait I/O completion and simulate that the I/O has completed

[Qemu-devel] [PATCH 5/6] block: Change bdrv_eject() not to drop the image

2010-08-03 Thread Kevin Wolf
From: Markus Armbruster bdrv_eject() gets called when a device model opens or closes the tray. If the block driver implements method bdrv_eject(), that method gets called. Drivers host_cdrom implements it, and it opens and closes the physical tray, and nothing else. When a device model opens,

[Qemu-devel] [STABLE 0.13][PULL 0/3] Block patches for stable-0.13

2010-08-03 Thread Kevin Wolf
The following changes since commit 8f6e28789faeac4f01f8dbfdac147a3d3b635f24: savevm: Fix memory leak of compat struct (2010-07-30 23:02:03 +0200) are available in the git repository at: git://repo.or.cz/qemu/kevin.git for-stable-0.13 Andrea Arcangeli (1): ide: Avoid canceling IDE DMA

[Qemu-devel] [STABLE 0.13][PATCH 2/3] block: Change bdrv_eject() not to drop the image

2010-08-03 Thread Kevin Wolf
From: Markus Armbruster bdrv_eject() gets called when a device model opens or closes the tray. If the block driver implements method bdrv_eject(), that method gets called. Drivers host_cdrom implements it, and it opens and closes the physical tray, and nothing else. When a device model opens,

[Qemu-devel] [STABLE 0.13][PATCH 3/3] ide: Avoid canceling IDE DMA

2010-08-03 Thread Kevin Wolf
From: Andrea Arcangeli The reason for not actually canceling the I/O is because with virtualization and lots of VM running, a guest fs may mistake a overload of the host, as an IDE timeout. So rather than canceling the I/O, it's safer to wait I/O completion and simulate that the I/O has completed

[Qemu-devel] [STABLE 0.13][PATCH 1/3] block: Fix bdrv_has_zero_init

2010-08-03 Thread Kevin Wolf
Assuming that any image on a block device is not properly zero-initialized is actually wrong: Only raw images have this problem. Any other image format shouldn't care about it, they initialize everything properly themselves. Signed-off-by: Kevin Wolf (cherry picked from commit 336c1c12551ff0a6e1a

Re: [Qemu-devel] Anyone seeing huge slowdown launching qemu with Linux 2.6.35?

2010-08-03 Thread Richard W.M. Jones
On Tue, Aug 03, 2010 at 05:38:25PM +0300, Avi Kivity wrote: > The time will only continue to grow as you add features and as the > distro bloats naturally. > > Much better to create it once and only update it if some dependent > file changes (basically the current on-the-fly code + save a list of

[Qemu-devel] [PATCH REPOST] fw_cfg: Allow guest to read kernel etc via fast, synchronous "DMA"-type operation.

2010-08-03 Thread Richard W.M. Jones
I rebased this and rechecked it. The *total* libguestfs boot time goes from 86 seconds down to 7.7 seconds. The proportion of that attributable to loading the appliance is approximately 650 times [sic] faster. Rich. -- Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjo

[Qemu-devel] [PATCH 2/2] virtio-blk: Fix migration of queued requests

2010-08-03 Thread Kevin Wolf
in_sg[].iovec and out_sg[].ioved are pointer to (source) host memory and therefore invalid after migration. When loading the device state we must create a new mapping on the destination host. Signed-off-by: Kevin Wolf --- hw/virtio-blk.c |5 + 1 files changed, 5 insertions(+), 0 deletion

[Qemu-devel] [PATCH 0/2] virtio-blk: Fix migration of queued requests

2010-08-03 Thread Kevin Wolf
With queued requests the destination will crash after migration has completed because it uses invalid pointers to source host memory. Kevin Wolf (2): virtio: Factor virtqueue_map_sg out virtio-blk: Fix migration of queued requests hw/virtio-blk.c |5 + hw/virtio.c | 38

[Qemu-devel] [PATCH 1/2] virtio: Factor virtqueue_map_sg out

2010-08-03 Thread Kevin Wolf
Separate the mapping of requests to host memory from the descriptor iteration. The next patch will make use of it in a different context. Signed-off-by: Kevin Wolf --- hw/virtio.c | 38 -- hw/virtio.h |3 +++ 2 files changed, 27 insertions(+), 14 deletio

[Qemu-devel] Re: [PATCH] Create USB buses and devices based on USB version.

2010-08-03 Thread David S. Ahern
ping. This patch request was first submitted to the list 3 weeks ago. If there are no objections, please apply. On 07/26/10 07:50, David Ahern wrote: > Create USB buses and devices based on USB version. This addresses > addresses a number of FIXME's by assigning USB devices to a specific bus. > t

Re: [Qemu-devel] RFC adding ioctl's to virtserial/virtconsole

2010-08-03 Thread Gerd Hoffmann
On 08/03/10 15:12, Anthony Liguori wrote: On 08/03/2010 03:46 AM, Gerd Hoffmann wrote: Hi, My main objection to ioctls is that you change states based on event delivery. This results in weird things like what happens when you do a chr_write while not ready or not connected. So what I'd rather

Re: [Qemu-devel] RFC adding ioctl's to virtserial/virtconsole

2010-08-03 Thread Anthony Liguori
On 08/03/2010 10:28 AM, Gerd Hoffmann wrote: On 08/03/10 15:12, Anthony Liguori wrote: On 08/03/2010 03:46 AM, Gerd Hoffmann wrote: Hi, My main objection to ioctls is that you change states based on event delivery. This results in weird things like what happens when you do a chr_write while n

[Qemu-devel] [Bug 611142] Re: seabios should have native scsi support

2010-08-03 Thread Mathias Gug
** Changed in: qemu-kvm (Ubuntu) Importance: Undecided => Wishlist -- seabios should have native scsi support https://bugs.launchpad.net/bugs/611142 You received this bug notification because you are a member of qemu- devel-ml, which is subscribed to QEMU. Status in QEMU: New Status in “qemu-

Re: [Qemu-devel] Anyone seeing huge slowdown launching qemu with Linux 2.6.35?

2010-08-03 Thread Avi Kivity
On 08/03/2010 05:53 PM, Richard W.M. Jones wrote: Total saving: 115ms. 815 ms by my arithmetic. no, not true, 115ms. If you bypass creating the initrd/cdrom (700 ms) and loading it (115ms) you save 815ms. You also save 3*N-2*P memory where N is the size of your initrd and P is the actu

[Qemu-devel] Re: [PATCH] e1000: Fix hotplug

2010-08-03 Thread Alex Williamson
On Tue, 2010-08-03 at 08:17 -0400, Glauber Costa wrote: > On Mon, Aug 02, 2010 at 03:15:17PM -0600, Alex Williamson wrote: > > When we hotplug the device, > > we don't go through a reset cycle, which means a hot added e1000 is > > useless until the VM reboots. > > I do guess, however, that this

[Qemu-devel] [PATCH] qdev: Reset hotplugged devices

2010-08-03 Thread Alex Williamson
Several devices rely on their reset() function being called to initialize device state, e1000 and rtl8139 in particular. When the device is hot added, the reset doesn't occur, often leaving the device in an unusable state. Adding a call to reset() after init() for hotplugged devices puts the devi

Re: [Qemu-devel] Anyone seeing huge slowdown launching qemu with Linux 2.6.35?

2010-08-03 Thread Richard W.M. Jones
On Tue, Aug 03, 2010 at 07:10:18PM +0300, Avi Kivity wrote: > -kernel and -initrd is a developer's interface intended to make life > easier for users that use qemu to develop kernels. It was not > intended as a high performance DMA engine. Neither was the firmware > _configuration_ interface. Th

Re: [Qemu-devel] Anyone seeing huge slowdown launching qemu with Linux 2.6.35?

2010-08-03 Thread Anthony Liguori
On 08/03/2010 09:53 AM, Richard W.M. Jones wrote: On Tue, Aug 03, 2010 at 05:38:25PM +0300, Avi Kivity wrote: The time will only continue to grow as you add features and as the distro bloats naturally. Much better to create it once and only update it if some dependent file changes (basicall

Re: [Qemu-devel] RFC adding ioctl's to virtserial/virtconsole

2010-08-03 Thread Gerd Hoffmann
Hi, /me wonders what the point of the 'backlog' struct element is then. Because it could be used for host event but let's ignore that for now. I doubt using the same beast for both host and guest is going to fly ... Yes, we can do that. I don't think it is useful. Oh, and it also changes

Re: [Qemu-devel] Anyone seeing huge slowdown launching qemu with Linux 2.6.35?

2010-08-03 Thread Richard W.M. Jones
On Tue, Aug 03, 2010 at 11:39:43AM -0500, Anthony Liguori wrote: > Let's be fair. I think we've all agreed to adjust the fw_cfg > interface to implement DMA. The only requirement was that the DMA > operation not be triggered from a single port I/O but rather based > on a polling operation which b

Re: [Qemu-devel] Anyone seeing huge slowdown launching qemu with Linux 2.6.35?

2010-08-03 Thread Avi Kivity
On 08/03/2010 07:28 PM, Richard W.M. Jones wrote: On Tue, Aug 03, 2010 at 07:10:18PM +0300, Avi Kivity wrote: -kernel and -initrd is a developer's interface intended to make life easier for users that use qemu to develop kernels. It was not intended as a high performance DMA engine. Neither w

Re: [Qemu-devel] Anyone seeing huge slowdown launching qemu with Linux 2.6.35?

2010-08-03 Thread Anthony Liguori
On 08/03/2010 11:44 AM, Avi Kivity wrote: On 08/03/2010 07:28 PM, Richard W.M. Jones wrote: On Tue, Aug 03, 2010 at 07:10:18PM +0300, Avi Kivity wrote: -kernel and -initrd is a developer's interface intended to make life easier for users that use qemu to develop kernels. It was not intended a

Re: [Qemu-devel] RFC adding ioctl's to virtserial/virtconsole

2010-08-03 Thread Anthony Liguori
On 08/03/2010 11:42 AM, Gerd Hoffmann wrote: understand what state the session is in. Spice would basically (ab-)use it as event delivery mechanism. Can you explain what spice uses these events for? Spice would then implement it's own CharServerState and would use it to spice-vmc code regis

Re: [Qemu-devel] Anyone seeing huge slowdown launching qemu with Linux 2.6.35?

2010-08-03 Thread Avi Kivity
On 08/03/2010 07:44 PM, Avi Kivity wrote: It's not a good path to follow. Tomorrow we'll need to load 300MB initrds and we'll have to rework this yet again. Meanwhile the kernel and virtio support demand loading of any image size you'd want to use. Even better would be to use virtio-9p.

Re: [Qemu-devel] Anyone seeing huge slowdown launching qemu with Linux 2.6.35?

2010-08-03 Thread Richard W.M. Jones
On Tue, Aug 03, 2010 at 07:48:17PM +0300, Avi Kivity wrote: > On 08/03/2010 07:44 PM, Avi Kivity wrote: > > > >It's not a good path to follow. Tomorrow we'll need to load 300MB > >initrds and we'll have to rework this yet again. Meanwhile the > >kernel and virtio support demand loading of any im

Re: [Qemu-devel] Anyone seeing huge slowdown launching qemu with Linux 2.6.35?

2010-08-03 Thread Avi Kivity
On 08/03/2010 07:53 PM, Anthony Liguori wrote: On 08/03/2010 11:50 AM, Avi Kivity wrote: On 08/03/2010 07:46 PM, Anthony Liguori wrote: It doesn't appear to support live migration, or hiding the feature for -M older. It's not a good path to follow. Tomorrow we'll need to load 300MB initrd

Re: [Qemu-devel] RFC adding ioctl's to virtserial/virtconsole

2010-08-03 Thread Gerd Hoffmann
On 08/03/10 18:45, Anthony Liguori wrote: On 08/03/2010 11:42 AM, Gerd Hoffmann wrote: spice-vmc code registers/unregisters the interface within the spice server. So the interface is only activated in case the guest uses it. Spice client sees the interface being active or not and can act accordi

Re: [Qemu-devel] Anyone seeing huge slowdown launching qemu with Linux 2.6.35?

2010-08-03 Thread Anthony Liguori
On 08/03/2010 11:50 AM, Avi Kivity wrote: On 08/03/2010 07:46 PM, Anthony Liguori wrote: It doesn't appear to support live migration, or hiding the feature for -M older. It's not a good path to follow. Tomorrow we'll need to load 300MB initrds and we'll have to rework this yet again. Meanw

Re: [Qemu-devel] Anyone seeing huge slowdown launching qemu with Linux 2.6.35?

2010-08-03 Thread Richard W.M. Jones
On Tue, Aug 03, 2010 at 07:44:49PM +0300, Avi Kivity wrote: > On 08/03/2010 07:28 PM, Richard W.M. Jones wrote: > >I have posted a small patch which makes this 650x faster without > >appreciable complication. > > It doesn't appear to support live migration, or hiding the feature > for -M older.

Re: [Qemu-devel] Anyone seeing huge slowdown launching qemu with Linux 2.6.35?

2010-08-03 Thread Avi Kivity
On 08/03/2010 08:00 PM, Richard W.M. Jones wrote: On Tue, Aug 03, 2010 at 07:48:17PM +0300, Avi Kivity wrote: On 08/03/2010 07:44 PM, Avi Kivity wrote: It's not a good path to follow. Tomorrow we'll need to load 300MB initrds and we'll have to rework this yet again. Meanwhile the kernel an

Re: [Qemu-devel] Anyone seeing huge slowdown launching qemu with Linux 2.6.35?

2010-08-03 Thread Avi Kivity
On 08/03/2010 07:56 PM, Richard W.M. Jones wrote: On Tue, Aug 03, 2010 at 07:44:49PM +0300, Avi Kivity wrote: On 08/03/2010 07:28 PM, Richard W.M. Jones wrote: I have posted a small patch which makes this 650x faster without appreciable complication. It doesn't appear to support live migrat

Re: [Qemu-devel] Anyone seeing huge slowdown launching qemu with Linux 2.6.35?

2010-08-03 Thread Anthony Liguori
On 08/03/2010 11:50 AM, Avi Kivity wrote: On 08/03/2010 07:46 PM, Anthony Liguori wrote: It doesn't appear to support live migration, or hiding the feature for -M older. It's not a good path to follow. Tomorrow we'll need to load 300MB initrds and we'll have to rework this yet again. Meanw

Re: [Qemu-devel] Anyone seeing huge slowdown launching qemu with Linux 2.6.35?

2010-08-03 Thread Avi Kivity
On 08/03/2010 07:46 PM, Anthony Liguori wrote: It doesn't appear to support live migration, or hiding the feature for -M older. It's not a good path to follow. Tomorrow we'll need to load 300MB initrds and we'll have to rework this yet again. Meanwhile the kernel and virtio support demand

[Qemu-devel] [RFC] qcow2: Add snapshot inherantance and uuid identification

2010-08-03 Thread Miguel Di Ciurcio Filho
As discussed on today's call, here is a prototype to support snapshots inherantance in qcow2 and to use uuid as identification mechanism. Bugs/Limitations: * 'info snapshots' output is huge Displaying one item per line seams cumbersome. Maybe we should have two commands, like lvscan and lvdisplay

[Qemu-devel] Re: [PATCH] qdev: Reset hotplugged devices

2010-08-03 Thread Glauber Costa
On Tue, Aug 03, 2010 at 10:19:47AM -0600, Alex Williamson wrote: > Several devices rely on their reset() function being called to > initialize device state, e1000 and rtl8139 in particular. When > the device is hot added, the reset doesn't occur, often leaving > the device in an unusable state. A

Re: [Qemu-devel] Anyone seeing huge slowdown launching qemu with Linux 2.6.35?

2010-08-03 Thread Anthony Liguori
On 08/03/2010 12:01 PM, Avi Kivity wrote: You mean, only one class of users cares about the performance of loading an initrd. However, you've also argued in other threads how important it is not to break libvirt even if it means we have to do silly things (like change help text). So... why i

Re: [Qemu-devel] RFC adding ioctl's to virtserial/virtconsole

2010-08-03 Thread Anthony Liguori
On 08/03/2010 12:02 PM, Gerd Hoffmann wrote: On 08/03/10 18:45, Anthony Liguori wrote: On 08/03/2010 11:42 AM, Gerd Hoffmann wrote: spice-vmc code registers/unregisters the interface within the spice server. So the interface is only activated in case the guest uses it. Spice client sees the int

Re: [Qemu-devel] Anyone seeing huge slowdown launching qemu with Linux 2.6.35?

2010-08-03 Thread Avi Kivity
On 08/03/2010 08:42 PM, Anthony Liguori wrote: However, I don't think we can objectively differentiate between a "major" and "minor" user. Generally speaking, I would rather that we not take the position of "you are a minor user therefore we're not going to accommodate you". Again it's a ma

Re: [Qemu-devel] Anyone seeing huge slowdown launching qemu with Linux 2.6.35?

2010-08-03 Thread Richard W.M. Jones
On Tue, Aug 03, 2010 at 08:58:10PM +0300, Avi Kivity wrote: > Richard, can you test kvm.git > master? it already contains one fix and we plan to add more. Yup, I will ... Rich. -- Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones Read my programming blog: http://rwm

[Qemu-devel] [PATCH 1/1] Added PMCR support

2010-08-03 Thread matt . waddel
From: Matt Waddel Added support for the CP15c9-CR12 register(Performance Monitor Control Register). Calls to this register are being implemented in the ARM Linux kernel. The register has several bit fields, as described in the ARM technical reference manual, but right now I only implemented it

[Qemu-devel] vhost-net requested but could not be initialized

2010-08-03 Thread John Bellessa
Hi everyone, I'm trying to get qemu running with vhost enabled but I seem to be running into an error which I can't figure out. Here's what I've done so far 1) I've downloaded and installed the kernel and userspace tools found at http://www.linux-kvm.org/page/VhostNet 2) I created a qcow2 image w

[Qemu-devel] Re: vhost-net requested but could not be initialized

2010-08-03 Thread John Bellessa
Hi everyone, Sorry this is a duplicate.  I accidentally hit send while I was typing it up.  Let me start over: I'm trying to get qemu running with vhost enabled but I seem to be running into an error which I can't figure out. Here's what I've done so far 1) I've downloaded and installed the kern

Re: [Qemu-devel] Anyone seeing huge slowdown launching qemu with Linux 2.6.35?

2010-08-03 Thread Anthony Liguori
On 08/03/2010 12:58 PM, Avi Kivity wrote: On 08/03/2010 08:42 PM, Anthony Liguori wrote: However, I don't think we can objectively differentiate between a "major" and "minor" user. Generally speaking, I would rather that we not take the position of "you are a minor user therefore we're not g

Re: [Qemu-devel] Anyone seeing huge slowdown launching qemu with Linux 2.6.35?

2010-08-03 Thread Avi Kivity
On 08/03/2010 09:26 PM, Anthony Liguori wrote: On 08/03/2010 12:58 PM, Avi Kivity wrote: On 08/03/2010 08:42 PM, Anthony Liguori wrote: However, I don't think we can objectively differentiate between a "major" and "minor" user. Generally speaking, I would rather that we not take the positio

Re: [Qemu-devel] Anyone seeing huge slowdown launching qemu with Linux 2.6.35?

2010-08-03 Thread Avi Kivity
On 08/03/2010 09:43 PM, Avi Kivity wrote: Really, the bar on new interfaces (both to guest and host) should be high, much higher than it is now. Interfaces should be well documented, future proof, migration safe, and orthogonal to existing interfaces. While the first three points could be im

Re: [Qemu-devel] Anyone seeing huge slowdown launching qemu with Linux 2.6.35?

2010-08-03 Thread Anthony Liguori
On 08/03/2010 01:43 PM, Avi Kivity wrote: If Richard is willing to do the work to make -kernel perform faster in such a way that it fits into the overall mission of what we're building, then I see no reason to reject it. The criteria for evaluating a patch should only depend on how it affect

Re: [Qemu-devel] Anyone seeing huge slowdown launching qemu with Linux 2.6.35?

2010-08-03 Thread Avi Kivity
On 08/03/2010 09:55 PM, Anthony Liguori wrote: On 08/03/2010 01:43 PM, Avi Kivity wrote: If Richard is willing to do the work to make -kernel perform faster in such a way that it fits into the overall mission of what we're building, then I see no reason to reject it. The criteria for evalu

Re: [Qemu-devel] Anyone seeing huge slowdown launching qemu with Linux 2.6.35?

2010-08-03 Thread Gleb Natapov
On Tue, Aug 03, 2010 at 09:43:39PM +0300, Avi Kivity wrote: > > > >If Richard is willing to do the work to make -kernel perform > >faster in such a way that it fits into the overall mission of what > >we're building, then I see no reason to reject it. The criteria > >for evaluating a patch should

Re: [Qemu-devel] Anyone seeing huge slowdown launching qemu with Linux 2.6.35?

2010-08-03 Thread Avi Kivity
On 08/03/2010 10:05 PM, Gleb Natapov wrote: That's true, but extending fwcfg doesn't fit into the overall picture well. We have well defined interfaces for pushing data into a guest: virtio-serial (dma upload), virtio-blk (adds demand paging), and virtio-p9fs (no image needed). Adapting libg

Re: [Qemu-devel] Anyone seeing huge slowdown launching qemu with Linux 2.6.35?

2010-08-03 Thread Richard W.M. Jones
On Tue, Aug 03, 2010 at 09:43:39PM +0300, Avi Kivity wrote: > libguestfs does not depend on an x86 architectural feature. > qemu-system-x86_64 emulates a PC, and PCs don't have -kernel. We > should discourage people from depending on this interface for > production use. I really don't get this wh

Re: [Qemu-devel] Anyone seeing huge slowdown launching qemu with Linux 2.6.35?

2010-08-03 Thread Anthony Liguori
On 08/03/2010 02:05 PM, Gleb Natapov wrote: On Tue, Aug 03, 2010 at 09:43:39PM +0300, Avi Kivity wrote: If Richard is willing to do the work to make -kernel perform faster in such a way that it fits into the overall mission of what we're building, then I see no reason to reject it. The crit

Re: [Qemu-devel] Anyone seeing huge slowdown launching qemu with Linux 2.6.35?

2010-08-03 Thread Gleb Natapov
On Tue, Aug 03, 2010 at 08:13:46PM +0100, Richard W.M. Jones wrote: > On Tue, Aug 03, 2010 at 09:43:39PM +0300, Avi Kivity wrote: > > libguestfs does not depend on an x86 architectural feature. > > qemu-system-x86_64 emulates a PC, and PCs don't have -kernel. We > > should discourage people from d

Re: [Qemu-devel] Anyone seeing huge slowdown launching qemu with Linux 2.6.35?

2010-08-03 Thread Anthony Liguori
On 08/03/2010 02:13 PM, Richard W.M. Jones wrote: On Tue, Aug 03, 2010 at 09:43:39PM +0300, Avi Kivity wrote: libguestfs does not depend on an x86 architectural feature. qemu-system-x86_64 emulates a PC, and PCs don't have -kernel. We should discourage people from depending on this interfac

Re: [Qemu-devel] Anyone seeing huge slowdown launching qemu with Linux 2.6.35?

2010-08-03 Thread Avi Kivity
On 08/03/2010 10:13 PM, Richard W.M. Jones wrote: On Tue, Aug 03, 2010 at 09:43:39PM +0300, Avi Kivity wrote: libguestfs does not depend on an x86 architectural feature. qemu-system-x86_64 emulates a PC, and PCs don't have -kernel. We should discourage people from depending on this interface f

Re: [Qemu-devel] Anyone seeing huge slowdown launching qemu with Linux 2.6.35?

2010-08-03 Thread Avi Kivity
On 08/03/2010 10:15 PM, Anthony Liguori wrote: fw_cfg has to be available pretty early on so relying on a PCI device isn't reasonable. Having dual interfaces seems wasteful. Agree. We're already doing bulk data transfer over fw_cfg as we need to do it to transfer roms and potentially a

Re: [Qemu-devel] Anyone seeing huge slowdown launching qemu with Linux 2.6.35?

2010-08-03 Thread Gleb Natapov
On Tue, Aug 03, 2010 at 02:15:05PM -0500, Anthony Liguori wrote: > On 08/03/2010 02:05 PM, Gleb Natapov wrote: > >On Tue, Aug 03, 2010 at 09:43:39PM +0300, Avi Kivity wrote: > >>>If Richard is willing to do the work to make -kernel perform > >>>faster in such a way that it fits into the overall mis

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