We now enforce that you cannot write beyond the end of a non-growable file.
qcow2 files are not growable but we rely on them being growable to do
savevm/loadvm. Temporarily allow them to be growable by introducing a new
API specifically for savevm read/write operations.
Reported-by: malc Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
git-svn-id: svn://svn.savannah.nongnu.org/qemu/branches/stable_0_10@7005 c046a42c-6fe2-441c-8c8c-71466251a162
stop dirty tracking just at the end of migration (Glauber Costa)
If there is still work to do, it is not safe to assume we
can end the dirty tracking. Specifically, kvm can update the dirty
tracking log inside ram_save_block(), leaving pages still out of sync
if we go with the current code.
Based on a patch by Yaniv Kamay
Signed-off-by: Glauber Costa <glommer@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
git-svn-id: svn://svn.savannah.nongnu.org/qemu/branches/stable_0_10@7002 c046a42c-6fe2-441c-8c8c-71466251a162
This is mainly for consistency, since we don't want
anything outside of savevm setting it explicitly. There
are current no users of that in qemu tree, but there
are potential candidates on kvm-userspace. And avi
is a nice guy, let's be nice with him.
Based on a patch by Yaniv Kamay
Signed-off-by: Glauber Costa <glommer@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
git-svn-id: svn://svn.savannah.nongnu.org/qemu/branches/stable_0_10@7001 c046a42c-6fe2-441c-8c8c-71466251a162
When creating large disk images w/ qcow2 format, qcow2_create is hard
coded to creating a single refcount block. This is insufficient for
large images, and will cause qemu-img to segfault as it walks off the
end of the refcount block. Keep track of the space needed during image
create and create proper number of refcount blocks accordingly.
pci_add storage: fix error handling for 'if' parameter (Eduardo Habkost)
This fixes:
- The error message to show the actual if= argument value. It was showing
the filename instead, because 'buf' is reaused on the filename parsing.
- A bug that makes a block device to be created even when an unsupported if= arg
is passed to pci_add.
Fix (at least one cause of) qcow2 corruption. (Nolan Leake)
qcow2's get_cluster_offset() scans forward in the l2 table to find other
clusters that have the same allocation status as the first cluster.
This is used by (among others) qcow_is_allocated().
Unfortunately, it was not checking to be sure that it didn't fall off
the end of the l2 table. This patch adds that check.
The symptom that motivated me to look into this was that
bdrv_is_allocated() was returning false when there was in fact data
there. This is one of many ways this bug could lead to data corruption.
I checked the other place that scans for consecutive unallocated blocks
(alloc_cluster_offset()) and it appears to be OK:
nb_clusters = MIN(nb_clusters, s->l2_size - l2_index);
appears to prevent the same problem from occurring.
aliguori [Sat, 28 Mar 2009 18:01:29 +0000 (18:01 +0000)]
char: Fix closing of various char devices (Jan Kiszka)
This patch fixes several issues around closing char devices. Affected
were pty (timer was left behind, even running), udp (no close handling
at all) and tcp (missing async IO handler cleanup). The bugs either
caused segfaults or stalled the qemu process. So far, hot-unplugging USB
serial adapters suffered from this.
Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
git-svn-id: svn://svn.savannah.nongnu.org/qemu/branches/stable_0_10@6912 c046a42c-6fe2-441c-8c8c-71466251a162
aliguori [Sat, 28 Mar 2009 15:51:46 +0000 (15:51 +0000)]
host_device_remove: remove incorrect check for device name (Eduardo Habkost)
There is no need to check for valid prefixes on the the device name
when removing it. If the device name is found on the vlan client list,
it can be removed, regardless of the prefix used on its name.
To reproduce the bug, just run this on the monitor:
aliguori [Fri, 20 Mar 2009 16:18:45 +0000 (16:18 +0000)]
virtio: Allow guest to defer VIRTIO_F_NOTIFY_ON_EMPTY (Alex Williamson)
There may be cases where the guest does not want the avail queue
interrupt, even when it's empty. For the virtio-net case, the
guest may use a different buffering scheme or decide polling for
used buffers is more efficient. This can be accomplished by simply
checking for whether the guest has acknowledged the existing notify
on empty flag.
Signed-off-by: Alex Williamson <alex.williamson@hp.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
git-svn-id: svn://svn.savannah.nongnu.org/qemu/branches/stable_0_10_0@6868 c046a42c-6fe2-441c-8c8c-71466251a162
The RXDMT0 interrupt is supposed to fire when the number of free
RX descriptors drops to some fraction of the total descriptors.
However in practice, it seems like we're adding this interrupt
cause on every RX. Fix the logic to treat (tail - head) as the
number of free entries rather than the number of used entries.
Signed-off-by: Alex Williamson <alex.williamson@hp.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
git-svn-id: svn://svn.savannah.nongnu.org/qemu/branches/stable_0_10_0@6867 c046a42c-6fe2-441c-8c8c-71466251a162
aliguori [Fri, 20 Mar 2009 16:18:35 +0000 (16:18 +0000)]
x86: Add NULL check to lsl (Jan Kiszka)
According to the Intel specs, lsl performs a check against NULL for the
provided selector, just like lar does. helper_lar() includes the
corresponding code, helper_lsl() was lacking it so far.
Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
git-svn-id: svn://svn.savannah.nongnu.org/qemu/branches/stable_0_10_0@6866 c046a42c-6fe2-441c-8c8c-71466251a162
aliguori [Fri, 13 Mar 2009 18:11:17 +0000 (18:11 +0000)]
stop dirty logging while updating cirrus bank memory (Glauber Costa)
Otherwise, slot tracking gets confused.
This fixes a screen corruption bug with Ubuntu guest installation.
Signed-off-by: Glauber Costa <glommer@redhat.com> Signed-off-by: Avi Kivity <avi@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
git-svn-id: svn://svn.savannah.nongnu.org/qemu/branches/stable_0_10_0@6853 c046a42c-6fe2-441c-8c8c-71466251a162
aliguori [Wed, 11 Mar 2009 20:16:16 +0000 (20:16 +0000)]
Revert r6404
This series is broken by design as it requires expensive IO operations at
open time causing very long delays when starting a virtual machine for the
first time.
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
git-svn-id: svn://svn.savannah.nongnu.org/qemu/branches/stable_0_10_0@6821 c046a42c-6fe2-441c-8c8c-71466251a162
aliguori [Wed, 11 Mar 2009 20:16:12 +0000 (20:16 +0000)]
Revert r6405
This series is broken by design as it requires expensive IO operations at
open time causing very long delays when starting a virtual machine for the
first time.
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
git-svn-id: svn://svn.savannah.nongnu.org/qemu/branches/stable_0_10_0@6820 c046a42c-6fe2-441c-8c8c-71466251a162
aliguori [Wed, 11 Mar 2009 20:16:05 +0000 (20:16 +0000)]
Revert r6406
This series is broken by design as it requires expensive IO operations at
open time causing very long delays when starting a virtual machine for the
first time.
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
git-svn-id: svn://svn.savannah.nongnu.org/qemu/branches/stable_0_10_0@6819 c046a42c-6fe2-441c-8c8c-71466251a162
aliguori [Wed, 11 Mar 2009 20:16:01 +0000 (20:16 +0000)]
Revert r6407
This series is broken by design as it requires expensive IO operations at
open time causing very long delays when starting a virtual machine for the
first time.
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
git-svn-id: svn://svn.savannah.nongnu.org/qemu/branches/stable_0_10_0@6818 c046a42c-6fe2-441c-8c8c-71466251a162
aliguori [Wed, 11 Mar 2009 20:15:55 +0000 (20:15 +0000)]
Revert r6408
This series is broken by design as it requires expensive IO operations at
open time causing very long delays when starting a virtual machine for the
first time.
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
git-svn-id: svn://svn.savannah.nongnu.org/qemu/branches/stable_0_10_0@6817 c046a42c-6fe2-441c-8c8c-71466251a162
aurel32 [Fri, 6 Mar 2009 21:49:37 +0000 (21:49 +0000)]
Fix race condition on access to env->interrupt_request
env->interrupt_request is accessed as the bit level from both main code
and signal handler, making a race condition possible even on CISC CPU.
This causes freeze of QEMU under high load when running the dyntick
clock.
The patch below move the bit corresponding to CPU_INTERRUPT_EXIT in a
separate variable, declared as volatile sig_atomic_t, so it should be
work even on RISC CPU.
We may want to move the cpu_interrupt(env, CPU_INTERRUPT_EXIT) case in
its own function and get rid of CPU_INTERRUPT_EXIT. That can be done
later, I wanted to keep the patch short for easier review.
aliguori [Thu, 5 Mar 2009 19:42:40 +0000 (19:42 +0000)]
monitor: Rework early disk password inquiry (Jan Kiszka)
Reading the passwords for encrypted hard disks during early startup is
broken (I guess for quiet a while now):
- No monitor terminal is ready for input at this point
- Forcing all mux'ed terminals into monitor mode can confuse other
users of that channels
To overcome these issues and to lay the ground for a clean decoupling of
monitor terminals, this patch changes the initial password inquiry as
follows:
- Prevent autostart if there is some encrypted disk
- Once the user tries to resume the VM, prompt for all missing
passwords
- Only resume if all passwords were accepted
Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
git-svn-id: svn://svn.savannah.nongnu.org/qemu/branches/stable_0_10_0@6699 c046a42c-6fe2-441c-8c8c-71466251a162
aliguori [Thu, 5 Mar 2009 19:42:36 +0000 (19:42 +0000)]
monitor: Report encrypted disks in snapshot mode (Jan Kiszka)
If the backing file is encrypted, 'info block' currently does not report
the disk as encrypted. Fix this by using the standard API to check disk
encryption mode. Moreover, switch to a canonical output format.
Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
git-svn-id: svn://svn.savannah.nongnu.org/qemu/branches/stable_0_10_0@6698 c046a42c-6fe2-441c-8c8c-71466251a162
aliguori [Thu, 5 Mar 2009 19:42:30 +0000 (19:42 +0000)]
monitor: Use reasonable default virtual console size (Jan Kiszka)
If a target uses a tiny display (like the MusicPal), the default monitor
is currently set to the same size. Fix this by applying the same
defaults like already used serial and virtio consoles.
Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
git-svn-id: svn://svn.savannah.nongnu.org/qemu/branches/stable_0_10_0@6697 c046a42c-6fe2-441c-8c8c-71466251a162
aliguori [Thu, 5 Mar 2009 19:42:07 +0000 (19:42 +0000)]
char-mux: Use separate input buffers (Jan Kiszka)
Currently, the intermediate input buffer of mux'ed character devices
records data across all sub-devices. This has the side effect that we
easily leak data recorded over one sub-devices to another once we switch
the focus. Avoid data loss and confusion by defining exclusive buffers.
Note: In contrast to the original author's claim, the buffering concept
still breaks down when the fifo of the currently active sub-device is
full. As we cannot accept futher data from this point on without risking
to loose it, we will also miss escape sequences, just like without all
that buffering. In short: There is no reliable escape sequence handling
without infinite buffers or the risk of loosing some data.
Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
git-svn-id: svn://svn.savannah.nongnu.org/qemu/branches/stable_0_10_0@6693 c046a42c-6fe2-441c-8c8c-71466251a162
aliguori [Thu, 5 Mar 2009 19:42:04 +0000 (19:42 +0000)]
char: Fix initial reset (Jan Kiszka)
Recent changes to the graphical console initialization broke the initial
CHR_EVENT_RESET distribution. The reset BHs generated on char device
initialization are now already consumed during machine init (ide init
... -> qemu_aio_wait -> qemu_bh_poll). Therefore, this patch moves the
initial qemu_chr_reset calls into a separate funtion which is called
after machine init.
Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
git-svn-id: svn://svn.savannah.nongnu.org/qemu/branches/stable_0_10_0@6692 c046a42c-6fe2-441c-8c8c-71466251a162
Signed-off-by: Ryan Harper <ryanh@us.ibm.com>
---
Subject: [PATCH] lsi: add ISTAT1 register read
From: Ryan Harper <ryanh@us.ibm.com> Cc: kvm@vger.kernel.org
SLES10 SP2 installer complains when probing a scsi disk and exits qemu when
failing to read one of the registers.
lsi_scsi: error: readb 0x15
Signed-off-by: Ryan Harper <ryanh@us.ibm.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
git-svn-id: svn://svn.savannah.nongnu.org/qemu/branches/stable_0_10_0@6690 c046a42c-6fe2-441c-8c8c-71466251a162
aliguori [Wed, 4 Mar 2009 19:25:22 +0000 (19:25 +0000)]
Update cocoa.m to match new DisplayState code (Samuel Benson)
Version 2 does as follows:
[1]: Corrects endianness on issues by using native BGR to RGB conversion
[2]: Uses DisplayState accessors for obtaining graphics context information,
which
[3]: Removes now unused variables, and
[4]: Allows reading of varying color modes (32bit/24/16), and converting to
native colorspace
[5]: Attempts to keep itself centered on screen (as opposed to bottom right,
which immediately goes off screen after bios load) on context changes
(window resizes)
Testing working on i386 (gentoo, Windows 2000) and PPC (debian) guests on PPC
and x86 Macs.
In regards to [4], Windows 2000 displays fine on quick tests, but on the lowest
setting I could test, 16bit color depth at 4bpp, colors are slightly off. I
used gentoo install-x86-minimal-2008.0 in framebuffer mode to test above
setting; the usual grey text is now blue, and Tux appears to be BGR shifted. I
do not know if previous code worked at such a low color setting.
Signed-off-by: Samuel Benson <qemu_ml@digitalescape.info>
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6683 c046a42c-6fe2-441c-8c8c-71466251a162
pbrook [Wed, 4 Mar 2009 12:18:15 +0000 (12:18 +0000)]
The different VFP variants will never occur at the same time, and giving them
different names confuses GDB, so use org.gnu.gdb.arm.vfp for all of them.
Signed-off-by: Paul Brook <paul@codesourcery.com>
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6682 c046a42c-6fe2-441c-8c8c-71466251a162
edgar_igl [Tue, 3 Mar 2009 18:07:11 +0000 (18:07 +0000)]
CRIS: Avoid endless loops for unstested CRIS cpu-state load/save.
Fix several endless loops.
Signed-off-by: Stefan Weil <weil@mail.berlios.de> Acked-by: Edgar E. Iglesias <edgar.iglesias@gmail.com>
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6679 c046a42c-6fe2-441c-8c8c-71466251a162
aliguori [Tue, 3 Mar 2009 17:37:21 +0000 (17:37 +0000)]
Fix SDL on evdev hosts (Anthony Liguori)
This patch corrects SDL support on X11 hosts using evdev. It's losely based
on the previous patch by Dustin Kirkland and the evdev support code in gtk-vnc
written by Daniel Berrange.
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6678 c046a42c-6fe2-441c-8c8c-71466251a162
Introduce a growable flag that's set by bdrv_file_open(). Block devices should
never be growable, only files that are being used by block devices.
I went through Fabrice's early comments about the patch that was first applied.
While I disagree with that patch, I also disagree with Fabrice's suggestion.
There's no good reason to do the checks in the block drivers themselves. It
just increases the possibility that this bug could show up again. Since we're
calling bdrv_getlength() to determine the length, we're giving the block drivers
a chance to chime in and let us know what range is valid.
Basically, this patch makes the BlockDriver API guarantee that all requests are
within 0..bdrv_getlength() which to me seems like a Good Thing.
What do others think?
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6677 c046a42c-6fe2-441c-8c8c-71466251a162
aurel32 [Mon, 2 Mar 2009 17:13:21 +0000 (17:13 +0000)]
SH: Implement MOVCO.L and MOVLI.L
* target-sh4/cpu.h (struct CPUSH4State): New field ldst.
* target-sh4/translate.c (cpu_ldst): New.
(sh4_translate_init): Initialize cpu_ldst.
(_decode_opc): Support MOVCO.L and MOVLI.L.
blueswir1 [Sat, 28 Feb 2009 20:14:00 +0000 (20:14 +0000)]
Flush stdout after printing usage()
Fixes qemu-arm|grep cpu - with _exit() getting output from qemu --help
is a bit random. Since no atexit() handlers are registered for user mode
emulation, just use exit() instead.
aliguori [Sat, 28 Feb 2009 16:51:01 +0000 (16:51 +0000)]
Change default werror semantics from "report" to "enospc"
Practically speaking, "report" causes a lot of issues when encountering a host
ENOSPC error. Switch to "enospc" as the default werror semantics. All host
errors other than ENOSPC will be reported to the guest. ENOSPC will cause the
VM to stop. Asynchronous notifications are needed to inform management tools
that some action should be taken but stopping the VM is at least better than
undefined behavior in the guest.
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6655 c046a42c-6fe2-441c-8c8c-71466251a162
blueswir1 [Sat, 28 Feb 2009 08:25:29 +0000 (08:25 +0000)]
Fix typo in gen_qemu_ld32s
When the CPU is in little endian mode, it should load values from RAM
in byte swapped manner. This check is in all the ld and st functions,
but misspelled in gen_qemu_ld32s.
This patch fixes the misspelling and makes ppc64 Linux happier.
Signed-off-by: Alexander Graf <alex@csgraf.de>
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6654 c046a42c-6fe2-441c-8c8c-71466251a162
aliguori [Fri, 27 Feb 2009 22:09:45 +0000 (22:09 +0000)]
chroot and change user support (Nolan)
Resent with fixed formatting.
This patch adds two new command line options:
-chroot <dir>
-runas <user>
This is useful for running qemu as an unprivileged user in a chroot
jail. To avoid having to populate the jail, chrooting happens right
before the start of guest execution.
aliguori [Fri, 27 Feb 2009 19:53:57 +0000 (19:53 +0000)]
Missing cirrus_invalidate_region() in cirrus_do_copy() (Brian Kress)
After doing a video to video copy, cirrus_do_copy() in cirrus_vga.c does a
conditional call to cirrus_invalidate_region() with an "if (!notify)" test.
However at this point the blt has already been done so it seems like this call
should be made unconditionally. The patch below fixes some display update
problems when dragging windows under both X (fedora 10 guest) and a Windows XP
guest.
Signed-off-by: Brian Kress <kressb@moose.net> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6646 c046a42c-6fe2-441c-8c8c-71466251a162
edgar_igl [Sun, 22 Feb 2009 11:59:59 +0000 (11:59 +0000)]
CRIS: Fix remaining build warnings.
Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> Acked-by: Edgar E. Iglesias <edgar.iglesias@gmail.com>
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6638 c046a42c-6fe2-441c-8c8c-71466251a162
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