This patch implements a parser and qdev tree walker for bus paths and
adds qdev_device_add on top of this.
A bus path can be:
(1) full path, i.e. /i440FX-pcihost/pci.0/lsi/scsi.0
(2) bus name, i.e. "scsi.0". Best used together with id= to make
sure this is unique.
(3) relative path starting with a bus name, i.e. "pci.0/lsi/scsi.0"
For the (common) case of a single child bus being attached to a device
it is enougth to specify the device only, i.e. "pci.0/lsi" will be
accepted too.
qdev_device_add() adds devices and accepts bus= parameters to find the
bus the device should be attached to. Without bus= being specified it
takes the first bus it finds where the device can be attached to (i.e.
first pci bus for pci devices, ...).
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
Create a default bus name if none is passed to qbus_create().
If the parent device has DeviceState->id set it will be used to create
the bus name,. i.e. -device lsi,id=foo will give you a scsi bus named
"foo.0".
If there is no id BusInfo->name (lowercased) will be used instead, i.e.
-device lsi will give you a scsi bus named "scsi.0".
A scsi adapter with two scsi busses would have "scsi.0" and "scsi.1" or
"$id.0" and "$id.1" busses. The numbers of the child busses are per
device, i.e. when adding two lsi adapters both will have a "*.0" child
bus.
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
Mark McLoughlin [Wed, 22 Jul 2009 09:02:51 +0000 (10:02 +0100)]
Add a pc-0.11 machine type and make the pc type an alias
The pc-0.11 type allows users of qemu-0.11 to use a machine type which
they know will remain compatible when the upgrade to qemu-0.12.
Management tools may choose to canonicalize the 'pc' machine type to
'pc-0.11' so that if the 'pc' alias changes target in future versions
of qemu, the machine type used will remain compatible.
Signed-off-by: Mark McLoughlin <markmc@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
Mark McLoughlin [Wed, 22 Jul 2009 09:02:50 +0000 (10:02 +0100)]
Add machine type aliases
Add an 'alias' field to QEMUMachine and display it in the output of
'qemu -M ?' with an '(aliased to foo)' suffix.
Aliases can change targets in newer versions of qemu, so management tools
may choose canonicalize machine types to ensure that if a user chooses an
alias, that the actual machine type used will remain compatible in
future.
This is intended to mimic a symlink to a machine description file.
Signed-off-by: Mark McLoughlin <markmc@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
Mark McLoughlin [Wed, 22 Jul 2009 08:11:42 +0000 (09:11 +0100)]
Add support for fd=name to tap and socket networking
This allows a program to initialize a host networking device using a
file descriptor passed over a unix monitor socket.
The program must first pass the file descriptor using SCM_RIGHTS
ancillary data with the getfd monitor command. It then may do
"host_net_add tap fd=name" to use the named file descriptor.
Signed-off-by: Mark McLoughlin <markmc@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
Mark McLoughlin [Wed, 22 Jul 2009 08:11:39 +0000 (09:11 +0100)]
Add SCM_RIGHTS support to unix socket character devices
If a file descriptor is passed via a message with SCM_RIGHTS ancillary
data on a unix socket, store the file descriptor for use in the
chr_read() handler. Close the file descriptor if it was not used.
The qemu_chr_get_msgfd() API provides access to the passed descriptor.
Signed-off-by: Mark McLoughlin <markmc@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
Mark McLoughlin [Wed, 22 Jul 2009 08:11:38 +0000 (09:11 +0100)]
Make tcp_chr_read() use recvmsg()
Split out tcp_chr_recv() out of tcp_chr_read() and implement it on
non-win32 using recvmsg(). This is needed for a subsequent patch
which implements SCM_RIGHTS support.
Signed-off-by: Mark McLoughlin <markmc@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
- implement "used" bit in tlb translation entry
- mark tlb entry used if qemu code/data translation succeeds
- fold i/d mmu replacement writes code into replace_tlb_1bit_lru which
adds 1bit lru replacement algorithm; previously code tried to replace
first unlocked entry only
- extract more bitmasks to named macros
- add "immu" or "dmmu" type name to debugging output where appropriate
Signed-off-by: igor.v.kovalenko@gmail.com
--
Kind regards,
Igor V. Kovalenko
Alexander Graf [Sun, 26 Jul 2009 06:31:15 +0000 (06:31 +0000)]
PPC: Round VGA BIOS size to page boundary
When giving KVM a slot of a size not on page boundary, it chokes. So let's
just round up the VGA BIOS size so nobody complains anymore and we don't need
to implement sub-page slots.
Glauber Costa [Tue, 21 Jul 2009 15:26:58 +0000 (12:26 -0300)]
provide tests for pit in kernel and irqchip in kernel
KVM can have an in-kernel pit or irqchip. While we don't implement it
yet, having a way for test for it (that always returns zero) will allow us
to reuse code in qemu-kvm that tests for it.
Signed-off-by: Glauber Costa <glommer@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
Jan Kiszka [Fri, 17 Jul 2009 09:20:10 +0000 (11:20 +0200)]
Link bios files when building out of tree
When starting a qemu binary directly from the build directory and that
dir is located outside the source files, the search for bios files
fails. Fix this by linking them from the build to the source directory.
Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
Glauber Costa [Thu, 16 Jul 2009 21:55:28 +0000 (17:55 -0400)]
introduce on_vcpu
on_vcpu is a qemu-kvm function that will make sure that a specific
piece of code will run on a requested cpu. We don't need that because
we're restricted to -smp 1 right now, but those days are likely to end soon.
So for the benefit of having qemu-kvm share more code with us, I'm
introducing our own version of on_vcpu(). Right now, we either run
a function on the current cpu, or abort the execution, because it would
mean something is seriously wrong.
As an example code, I "ported" kvm_update_guest_debug to use it,
with some slight differences from qemu-kvm.
This is probably 0.12 material
Signed-off-by: Glauber Costa <glommer@redhat.com> CC: Jan Kiszka <jan.kiszka@siemens.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
Replace the use of atoi which is used for pattern parsing currently with
strtol. Atoi won't parse sedecimal pattern values (it always returns 0),
but qemu-iotests use such pattern values. Also reject every pattern
that is not a unsigned char as we pass the pattern to memset which
expect a bye value (despite having the pattern argument declared as int).
Based on an earlier patch by Stefan Weil which did not include the
error handling.
Signed-off-by: Christoph Hellwig <hch@lst.de> Reported-by: Stefan Weil <weil@mail.berlios.de> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
Kevin Wolf [Mon, 20 Jul 2009 14:48:43 +0000 (16:48 +0200)]
qemu-io: Rework alloc command
The alloc command in qemu-io is mostly useless currently. Instead of doing a
single call to bdrv_is_allocated, we must call bdrv_is_allocated in a loop
until we have found out for each requested sector if it is allocated or not
(bdrv_is_allocated returns a number of sectors that are known to be in the same
state as the first one, but it is not required to include all of them)
This changes the output format of the alloc command so that a change to the
expected output of qemu-iotests 019 is necessary once this is included.
Signed-off-by: Kevin Wolf <kwolf@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
qmu-img: fix qemu-img convert to generate a valid image when the source referenced a backing file
Make 'qemu-img convert' copies unallocated parts of the source image
when -B option was not specified.
Signed-off-by: Akkarit Sangpetch <asangpet@andrew.cmu.edu> Signed-off-by: Kevin Wolf <kwolf@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
Kevin Wolf [Fri, 17 Jul 2009 06:20:41 +0000 (08:20 +0200)]
vmdk: Fix backing file handling
Instead of storing the backing file in its own BlockDriverState, VMDK uses the
BlockDriverState of the raw image file it opened. This is wrong and breaks
functions that access the backing file or protocols. This fix replaces all
occurrences of s->hd->backing_* with bs->backing_*.
This fixes qemu-iotests failure in 020 (Commit changes to backing file).
Signed-off-by: Kevin Wolf <kwolf@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
Add save/restore support to the LSI logic SCSI device model.
This patch requires "Handle BH's queued by AIO completions in
qemu_aio_flush()" to work reliably. The combination of those two
patches survived 300+ migrations with heavy IO load running in the
guest.
Signed-off-by: Nolan Leake <nolan <at> sigbus.net> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
Alexander Graf [Fri, 17 Jul 2009 11:51:48 +0000 (13:51 +0200)]
Fake dirty loggin when it's not there
Some KVM platforms don't support dirty logging yet, like IA64 and PPC,
so in order to still have screen updates on those, we need to fake it.
This patch just tells the getter function for dirty bitmaps, that all
pages within a slot are dirty when the slot has dirty logging enabled.
That way we can implement dirty logging on those platforms sometime when
it drags down performance, but share the rest of the code with dirty
logging capable platforms.
Signed-off-by: Alexander Graf <agraf@suse.de> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
Alexander Graf [Fri, 17 Jul 2009 11:51:43 +0000 (13:51 +0200)]
Set PVR in sregs
We need to tell the kernel about some initial CPU state we don't have yet,
so let's use the "sregs" IOCTL for that and simply put the Processor Version
Register in there.
Now the kernel knows which guest CPU to virtualize.
Signed-off-by: Alexander Graf <agraf@suse.de> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
Christoph Egger [Fri, 17 Jul 2009 17:48:03 +0000 (17:48 +0000)]
bsd-users: fix strace
Hi!
Attached patch fixes an unlock bug in strace.
Catched by gcc due to an use of uninitialized variable.
Signed-off-by: Christoph Egger <Christoph.Egger@amd.com>
--
---to satisfy European Law for business letters:
Advanced Micro Devices GmbH
Karl-Hammerschmidt-Str. 34, 85609 Dornach b. Muenchen
Geschaeftsfuehrer: Thomas M. McCoy, Giuliano Meroni
Sitz: Dornach, Gemeinde Aschheim, Landkreis Muenchen
Registergericht Muenchen, HRB Nr. 43632
Christoph Egger [Fri, 17 Jul 2009 17:48:02 +0000 (17:48 +0000)]
isxdigit -> qemu_isxdigit
Hi!
Attached patch uses qemu_isxdigit() instead of isxdigit().
Fixes build warning on NetBSD.
Signed-off-by: Christoph Egger <Christoph.Egger@amd.com>
--
---to satisfy European Law for business letters:
Advanced Micro Devices GmbH
Karl-Hammerschmidt-Str. 34, 85609 Dornach b. Muenchen
Geschaeftsfuehrer: Thomas M. McCoy, Giuliano Meroni
Sitz: Dornach, Gemeinde Aschheim, Landkreis Muenchen
Registergericht Muenchen, HRB Nr. 43632
Christoph Egger [Fri, 17 Jul 2009 17:48:01 +0000 (17:48 +0000)]
fix build warnings
Hi!
Attached patch fixes build warnings due to use of different pointer
signedness.
Signed-off-by: Christoph Egger <Christoph.Egger@amd.com>
--
---to satisfy European Law for business letters:
Advanced Micro Devices GmbH
Karl-Hammerschmidt-Str. 34, 85609 Dornach b. Muenchen
Geschaeftsfuehrer: Thomas M. McCoy, Giuliano Meroni
Sitz: Dornach, Gemeinde Aschheim, Landkreis Muenchen
Registergericht Muenchen, HRB Nr. 43632
Paul Brook [Fri, 17 Jul 2009 11:48:08 +0000 (12:48 +0100)]
Userspace guest address offsetting
Re-implement GUEST_BASE support.
Offset guest ddress space by default if the guest binary contains
regions below the host mmap_min_addr.
Implement support for i386, x86-64 and arm hosts.
Signed-off-by: Riku Voipio <riku.voipio@iki.fi> Signed-off-by: Paul Brook <paul@codesourcery.com>
Blue Swirl [Fri, 17 Jul 2009 11:01:45 +0000 (11:01 +0000)]
Fix OpenBSD build
The header sys-queue.h must be #included early, otherwise at some point OS
queue macros will be used. On OpenBSD, those don't define TAILQ_FOREACH_SAFE.
#define snd_pcm_sw_params_alloca(ptr) do { assert(ptr); *ptr = (snd_pcm_sw_params_t *) alloca(snd_pcm_sw_params_sizeof()); memset(*ptr, 0, snd_pcm_sw_params_sizeof()); } while (0)
The assert generates: "error: the address of 'sw_params' will always
evaluate as 'true'" which combined with -Werror prevents alsaaudio.o
from being built with certain versions of GCC.
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