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
malc [Sat, 21 Feb 2009 05:48:19 +0000 (05:48 +0000)]
Properly handle pthread_cond_timedwait timing out
pthread_cond_timedwait is allowed to both consume the signal and
return with the value indicating the timeout, hence predicate should
always be (re)checked before taking an action
malc [Sat, 21 Feb 2009 05:48:15 +0000 (05:48 +0000)]
Avoid thundering herd problem
Broadcast was used so that the I/O threads would wakeup, reset their
ts values and all but one go to sleep, in other words an optimization
to prevent threads from exiting in presence of continuing I/O
activity. Spurious wakeups make the looping around cond_timedwait with
ever reinitialized ts potentially unsafe and as such ts in no longer
reinitilized inside the loop, hence switch to signal is warranted and
this benefits of this particlaur optimization are lost.
(It's worth noting that timed variants of pthread calls use realtime
clock by default, and therefore can hang "forever" should the host
time be changed. Unfortunatelly not all host systems QEMU runs on
support CLOCK_MONOTONIC and/or pthread_condattr_setclock with this
value)
aurel32 [Wed, 18 Feb 2009 21:37:17 +0000 (21:37 +0000)]
Fix cpu_physical_memory_rw() for 64-bit I/O accesses
KVM uses cpu_physical_memory_rw() to access the I/O devices. When a
read or write with a length of 8-byte is requested, it is split into 2
4-byte accesses.
This has been broken in revision 5849. After this revision, only the
first 4 bytes are actually read/write to the device, as the target
address is changed, so on the next iteration of the loop the next 4
bytes are actually read/written elsewhere (in the RAM for the graphic
card).
This patch fixes screen corruption (and most probably data corruption)
with FreeBSD/amd64. Bug #2556746 in KVM bugzilla.
aliguori [Mon, 16 Feb 2009 14:59:35 +0000 (14:59 +0000)]
Fix hardware accelerated video to video copy on Cirrus VGA (Brian Kress)
cirrus_do_copy() in hw/cirrus_vga.c seems to make some incorrect assumptions
about video memory layout. It tries to convert addresses to coordinates
assuming that one row of data is (width * depth) bytes long. The correct way
seems to be to use the pitch fields in the CirrusVGAState structure instead.
Without this patch, I get lots of screen corruption when I try to drag a window
under X as it's passing the wrong coordinates to the display surface for the
copy. With this patch I can drag a window with no screen corruption.
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@6622 c046a42c-6fe2-441c-8c8c-71466251a162
aliguori [Mon, 16 Feb 2009 14:59:30 +0000 (14:59 +0000)]
Support multiple VNC clients (Brian Kress)
Change structure associated with a display from VncState to a new structure
VncDisplay. Remove client specific fields from VncDisplay. Remove display
specific fields from VncState. Maintain a linked list of VncStates per
VncDisplay structure, update as necessary. When updates/resizes/copies come in
from the hardware, dispatch to all clients.
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@6621 c046a42c-6fe2-441c-8c8c-71466251a162
projects / qemu.git / log