Jason Wang [Wed, 30 Jan 2013 11:12:35 +0000 (19:12 +0800)]
vhost: multiqueue support
This patch lets vhost support multiqueue. The idea is simple, just launching
multiple threads of vhost and let each of vhost thread processing a subset of
the virtqueues of the device. After this change each emulated device can have
multiple vhost threads as its backend.
To do this, a virtqueue index were introduced to record to first virtqueue that
will be handled by this vhost_net device. Based on this and nvqs, vhost could
calculate its relative index to setup vhost_net device.
Since we may have many vhost/net devices for a virtio-net device. The setting of
guest notifiers were moved out of the starting/stopping of a specific vhost
thread. The vhost_net_{start|stop}() were renamed to
vhost_net_{start|stop}_one(), and a new vhost_net_{start|stop}() were introduced
to configure the guest notifiers and start/stop all vhost/vhost_net devices.
Signed-off-by: Jason Wang <jasowang@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
Jason Wang [Wed, 30 Jan 2013 11:12:34 +0000 (19:12 +0800)]
tap: multiqueue support
Recently, linux support multiqueue tap which could let userspace call TUNSETIFF
for a signle device many times to create multiple file descriptors as
independent queues. User could also enable/disabe a specific queue through
TUNSETQUEUE.
The patch adds the generic infrastructure to create multiqueue taps. To achieve
this a new parameter "queues" were introduced to specify how many queues were
expected to be created for tap by qemu itself. Alternatively, management could
also pass multiple pre-created tap file descriptors separated with ':' through a
new parameter fds like -netdev tap,id=hn0,fds="X:Y:..:Z". Multiple vhost file
descriptors could also be passed in this way.
Each TAPState were still associated to a tap fd, which mean multiple TAPStates
were created when user needs multiqueue taps. Since each TAPState contains one
NetClientState, with the multiqueue nic support, an N peers of NetClientState
were built up.
A new parameter, mq_required were introduce in tap_open() to create multiqueue
tap fds.
Signed-off-by: Jason Wang <jasowang@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
Jason Wang [Wed, 30 Jan 2013 11:12:33 +0000 (19:12 +0800)]
tap: introduce a helper to get the name of an interface
This patch introduces a helper tap_get_ifname() to get the device name of tap
device. This is needed when ifname is unspecified in the command line and qemu
were asked to create tap device by itself. In this situation, the name were
allocated by kernel, so if multiqueue is asked, we need to fetch its name after
creating the first queue.
Only linux has this support since it's the only platform that supports
multiqueue tap.
Signed-off-by: Jason Wang <jasowang@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
Jason Wang [Wed, 30 Jan 2013 11:12:32 +0000 (19:12 +0800)]
tap: support enabling or disabling a queue
This patch introduce a new bit - enabled in TAPState which tracks whether a
specific queue/fd is enabled. The tap/fd is enabled during initialization and
could be enabled/disabled by tap_enalbe() and tap_disable() which calls platform
specific helpers to do the real work. Polling of a tap fd can only done when
the tap was enabled.
Signed-off-by: Jason Wang <jasowang@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
Jason Wang [Wed, 30 Jan 2013 11:12:31 +0000 (19:12 +0800)]
tap: add Linux multiqueue support
This patch add basic multiqueue support for Linux. When multiqueue is needed, we
will first check whether kernel support multiqueue tap before creating more
queues. Two new functions tap_fd_enable() and tap_fd_disable() were introduced
to enable and disable a specific queue. Since the multiqueue is only supported
in Linux, return error on other platforms.
Signed-off-by: Jason Wang <jasowang@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
Jason Wang [Wed, 30 Jan 2013 11:12:29 +0000 (19:12 +0800)]
tap: import linux multiqueue constants
Import multiqueue constants from if_tun.h from 3.8-rc3. A new ifr flag
IFF_MULTI_QUEUE were introduced to create a multiqueue backend by calling
TUNSETIFF with the this flag and with the same interface name many times.
A new ioctl TUNSETQUEUE were introduced. When doing this ioctl with
IFF_DETACH_QUEUE, the queue were disabled in the linux kernel. When doing this
ioctl with IFF_ATTACH_QUEUE, the queue were enabled in the linux kernel.
Signed-off-by: Jason Wang <jasowang@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
Jason Wang [Wed, 30 Jan 2013 11:12:28 +0000 (19:12 +0800)]
net: multiqueue support
This patch adds basic multiqueue support for qemu. The idea is simple, an array
of NetClientStates were introduced in NICState, parse_netdev() were extended to
find and match all NetClientStates belongs to the backend and place their
pointers in NICConf. Then qemu_new_nic can setup a N:N mapping between NICStates
that belongs to a nic and NICStates belongs to the netdev. And a queue_index
were introduced in NetClientState to track its index. After this, each peers of
a NICState were abstracted as a queue.
After this change, all NetClientState that belongs to the same backend/nic has
the same id. When use want to change the link status, all NetClientStates that
belongs to the same backend/nic will be also changed. When user want to delete
a device or netdev, all NetClientStates that belongs to the same backend/nic
will be deleted also. Changing or deleting an specific queue is not allowed.
Signed-off-by: Jason Wang <jasowang@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
Jason Wang [Wed, 30 Jan 2013 11:12:27 +0000 (19:12 +0800)]
net: introduce NetClientState destructor
To allow allocating an array of NetClientState and free it once, this patch
introduces destructor of NetClientState. Which could do type specific free,
which could be used by multiqueue to free the array once.
Signed-off-by: Jason Wang <jasowang@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
Jason Wang [Wed, 30 Jan 2013 11:12:26 +0000 (19:12 +0800)]
net: introduce qemu_net_client_setup()
This patch separates the setup of NetClientState from its allocation, this will
allow allocating an arrays of NetClientState and does the initialization one by
one which is what multiqueue needs.
Signed-off-by: Jason Wang <jasowang@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
Jason Wang [Wed, 30 Jan 2013 11:12:25 +0000 (19:12 +0800)]
net: introduce qemu_find_net_clients_except()
In multiqueue, all NetClientState that belongs to the same netdev or nic has the
same id. So this patches introduces an helper qemu_find_net_clients_except()
which finds all NetClientState with the same id. This will be used by multiqueue
networking.
Signed-off-by: Jason Wang <jasowang@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
Jason Wang [Wed, 30 Jan 2013 11:12:24 +0000 (19:12 +0800)]
net: intorduce qemu_del_nic()
To support multiqueue nic, this patch separate the nic destructor from
qemu_del_net_client() to a new helper qemu_del_nic() since the mapping bettween
NiCState and NetClientState were not 1:1 in multiqueue. The following patches
would refactor this function to support multiqueue nic.
Signed-off-by: Jason Wang <jasowang@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
Jason Wang [Wed, 30 Jan 2013 11:12:23 +0000 (19:12 +0800)]
net: introduce qemu_get_nic()
To support multiqueue, this patch introduces a helper qemu_get_nic() to get
NICState from a NetClientState. The following patches would refactor this helper
to support multiqueue.
Signed-off-by: Jason Wang <jasowang@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
Jason Wang [Wed, 30 Jan 2013 11:12:22 +0000 (19:12 +0800)]
net: introduce qemu_get_queue()
To support multiqueue, the patch introduce a helper qemu_get_queue()
which is used to get the NetClientState of a device. The following patches would
refactor this helper to support multiqueue.
Signed-off-by: Jason Wang <jasowang@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
Eduardo Habkost [Mon, 28 Jan 2013 18:15:16 +0000 (16:15 -0200)]
libqtest: Wait for the right child PID after killing QEMU
When running "make check" with gcov enabled, we get the following
message:
hw/tmp105.gcda:cannot open data file, assuming not executed
The problem happens because:
* tmp105-test exits before QEMU exits, because waitpid() at
qtest_quit() fails;
* waitpid() fails because there's another process already
waiting for the QEMU process;
* The process that is already waiting for QEMU is the child created by
qtest_init() to run system();
* qtest_quit() is incorrectly waiting for the QEMU PID directly instead
of the child created by qtest_init().
This fixes the problem by sending SIGTERM to QEMU, but waiting for the
child process created by qtest_init() (that exits immediately after QEMU
exits).
Reported-by: Andreas Färber <afaerber@suse.de> Signed-off-by: Eduardo Habkost <ehabkost@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
Andreas Färber [Sun, 20 Jan 2013 17:56:18 +0000 (18:56 +0100)]
isa: QOM'ify isa_bus_from_device()
DeviceState::parent_bus is document as private and should be accessed
through qdev_get_parent_bus(). Use a DEVICE() cast instead of accessing
ISADevice's qdev field directly. Use ISA_BUS() in place of DO_UPCAST().
Signed-off-by: Andreas Färber <afaerber@suse.de> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
Andreas Färber [Fri, 25 Jan 2013 08:12:54 +0000 (09:12 +0100)]
i2c: Drop I2C_SLAVE_FROM_QDEV() macro
It is not being used in hot paths and is obsoleted by I2C_SLAVE()
QOM cast macro. Clean it up using a scripted conversion, so that it
doesn't get used in new code.
Some of its callers were combining it with FROM_I2C_SLAVE() macro, which
is equally obsolete but needs to be replaced in a type-specific way.
Signed-off-by: Andreas Färber <afaerber@suse.de> Cc: Kuo-Jung Su <dantesu@faraday-tech.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
Andreas Färber [Sun, 27 Jan 2013 15:16:19 +0000 (16:16 +0100)]
configure: Keep -Werror enabled for Release Candidates
The automatic drop of -Werror during the RC phases has in the past led
to warnings creeping into submaintainer trees.
Last QEMU Summit it was concluded that -Werror should stay on and
enabled only as part of the release process.
To relieve our release manager, instead of always enabling -Werror or
doing some number magic, let's enable it depending on whether a .git/
directory exists in the source tree.
Signed-off-by: Andreas Färber <afaerber@suse.de> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
I'm not sure what issue the original commit was meant to fix, or if
the logic is actually wrong, but it causes e1000 to stop working
after a guest issues a reset.
>From what I can tell a guest with an e1000 nic has no way of changing
the link status, as far as it's NetClient peer is concerned, except
in the auto-negotiation path, so with this patch in place there's no
recovery after a reset, since the link goes down and stays that way.
Revert this patch now to fix the bigger problem, and handle any
lingering issues with a follow-up.
Reproduced/tested with qemu-jeos and Ubuntu 12.10.
Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
Anthony Liguori [Fri, 1 Feb 2013 15:08:14 +0000 (09:08 -0600)]
Merge remote-tracking branch 'quintela/migration.next' into staging
# By Orit Wasserman
# Via Juan Quintela
* quintela/migration.next:
Fix error message in migrate_set_capability HMP command
Allow XBZRLE decoding without enabling the capability
Fix example for query-migrate-capabilities
Add XBZRLE testing
Move XBZRLE encoding code to a separate file to allow testing
Anthony Liguori [Fri, 1 Feb 2013 15:06:23 +0000 (09:06 -0600)]
Merge remote-tracking branch 'agraf/s390-for-upstream' into staging
# By Andreas Färber
# Via Alexander Graf
* agraf/s390-for-upstream:
target-s390x: Pass S390CPU to s390_{add, del}_running_cpu()
target-s390x: Clean up cpu_inject_*() signatures
target-s390x: Fix debug output
target-s390x: Fix debug output (continued)
Anthony Liguori [Fri, 1 Feb 2013 15:02:09 +0000 (09:02 -0600)]
Merge remote-tracking branch 'agraf/ppc-for-upstream' into staging
# By Andreas Färber (2) and Alexander Graf (1)
# Via Alexander Graf
* agraf/ppc-for-upstream:
target-ppc: Fix build for PPC_DEBUG_DISAS
target-ppc: Fix unused variable warning for FLUSH_ALL_TLBS
PPC: Unify dcbzl code path
Orit Wasserman [Thu, 31 Jan 2013 07:12:18 +0000 (09:12 +0200)]
Allow XBZRLE decoding without enabling the capability
Before this fix we couldn't load a guest from
XBZRLE compressed file.
For example:
The user activated the XBZRLE capability
The user run migrate -d "exec:gzip -c > vm.gz"
The user won't be able to load vm.gz and get an error.
Signed-off-by: Orit Wasserman <owasserm@redhat.com> Reviewed-by: Paolo Bonzini <pbonzini@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Signed-off-by: Juan Quintela <quintela@redhat.com>
Anthony Liguori [Fri, 1 Feb 2013 01:37:33 +0000 (19:37 -0600)]
Merge remote-tracking branch 'afaerber/qom-cpu' into staging
# By Andreas Färber
# Via Andreas Färber
* afaerber/qom-cpu:
linux-user: bsd-user: Don't reset X86CPU twice
target-i386: Pass X86CPU to cpu_x86_set_a20()
target-unicore32: Rename CPU subtypes
target-openrisc: Rename CPU subtypes
target-openrisc: TYPE_OPENRISC_CPU should be abstract
target-m68k: Rename CPU subtypes
target-m68k: Mark as unmigratable
target-s390x: Mark as unmigratable
target-sh4: Mark as unmigratable
target-xtensa: Mark as unmigratable
target-microblaze: Mark as unmigratable
target-unicore32: Mark as unmigratable
ide/mmio: QOM'ify MMIO IDE for R2D
Anthony Liguori [Fri, 1 Feb 2013 01:37:23 +0000 (19:37 -0600)]
Merge remote-tracking branch 'afaerber-or/cocoa-for-upstream' into staging
# By Henry Harrington (1) and Stefan Weil (1)
# Via Andreas Färber
* afaerber-or/cocoa-for-upstream:
cocoa: Replace non-portable asprintf() by g_strdup_printf()
cocoa: Fix VBE function Set Display Start
Anthony Liguori [Fri, 1 Feb 2013 01:35:24 +0000 (19:35 -0600)]
Merge remote-tracking branch 'mst/tags/for_anthony' into staging
virtio,make,pci,e1000,vfio,piix
This includes my timestamp generation cleanup,
Amos's and my work on virtio net commands,
pci,e1000,vfio and piix fixes.
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
# gpg: Signature made Thu 31 Jan 2013 06:20:27 AM CST using RSA key ID D28D5469
# gpg: Can't check signature: public key not found
# By Michael S. Tsirkin (6) and others
# Via Michael S. Tsirkin
* mst/tags/for_anthony:
vfio-pci: Enable PCIe extended config space
PIIX3: reset the VM when the Reset Control Register's RCPU bit gets set
ich9: add support for pci assignment
virtio-net: rename ctrl rx commands
virtio-net: introduce a new macaddr control
virtio-net: remove layout assumptions for ctrl vq
virtio-net: revert mac on reset
rules/mak: make clean should blow away timestamp files
Makefile: clean timestamp generation rule
rules.mak: cleanup config generation rules
e1000: document ICS read behaviour
Andreas Färber [Wed, 30 Jan 2013 12:48:24 +0000 (12:48 +0000)]
target-s390x: Clean up cpu_inject_*() signatures
Despite cautioning that S390CPU is needed for upcoming CPUState
refactorings, commit 5d69c547d947798cba92d836d06f6e017ba2b19d (s390:
I/O interrupt and machine check injection.) added functions
cpu_inject_io() and cpu_inject_crw_mchk() with CPUS390XState argument,
claiming consistency with cpu_inject_ext().
This complicates making cpu_interrupt() take a CPUState even more and it
required to pass &cpu->env from some S390CPU-aware call sites already,
creating inconsistency elsewhere. Address that.
This also eliminates the need for CPUS390XState in s390_virtio_irq().
Signed-off-by: Andreas Färber <afaerber@suse.de> Acked-by: Cornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by: Alexander Graf <agraf@suse.de>
Andreas Färber [Sun, 27 Jan 2013 03:32:03 +0000 (03:32 +0000)]
target-s390x: Fix debug output
Commit 71e470886fb6092504503a5fe41092ace71c096c (target-s390x: fix
style) renamed the cpu_s390x_handle_mmu_fault() argument from _vaddr to
orig_vaddr. Update the debug output code.
Signed-off-by: Andreas Färber <afaerber@suse.de> Signed-off-by: Alexander Graf <agraf@suse.de>
Andreas Färber [Sun, 27 Jan 2013 03:32:02 +0000 (03:32 +0000)]
target-ppc: Fix build for PPC_DEBUG_DISAS
In r5949 / 76db3ba44ee8db671f804755f13b016eefd13288 (target-ppc: memory
load/store rework) variable little_endian was replaced with ctx.le_mode.
Update the debug code.
Signed-off-by: Andreas Färber <afaerber@suse.de> Signed-off-by: Alexander Graf <agraf@suse.de>
Alexander Graf [Tue, 29 Jan 2013 12:36:02 +0000 (13:36 +0100)]
PPC: Unify dcbzl code path
The bit that makes a dcbz instruction a dcbzl instruction was declared as
reserved in ppc32 ISAs. However, hardware simply ignores the bit, making
code valid if it simply invokes dcbzl instead of dcbz even on 750 and G4.
Thus, mark the bit as unreserved so that we properly emulate a simple dcbz
in case we're running on non-G5s.
While at it, also refactor the code to check the 970 special case during
runtime. This way we don't need to differenciate between a 970 dcbz and
any other dcbz anymore. We also allow for future improvements to add e500mc
dcbz handling.
Reported-by: Amadeusz Sławiński <amade@asmblr.net> Signed-off-by: Alexander Graf <agraf@suse.de>
Andreas Färber [Sun, 20 Jan 2013 04:34:10 +0000 (05:34 +0100)]
linux-user: bsd-user: Don't reset X86CPU twice
Since commit 65dee38052597b6285eb208125369f01b29ba6c1 (target-i386:
move cpu_reset and reset callback to cpu.c) the x86 CPU is reset through
cpu_init() but was still reset immediately after in linux-user and
bsd-user. Clean this up.
Similarly in linux-user/syscall.c it is also reset after cpu_copy().
But that's a bug of its own, fixing which poses a semantic change.
Signed-off-by: Andreas Färber <afaerber@suse.de> Reviewed-by: Igor Mammedov <imammedo@redhat.com>
Andreas Färber [Sun, 27 Jan 2013 22:25:25 +0000 (23:25 +0100)]
target-unicore32: Rename CPU subtypes
In the initial conversion of CPU models to QOM types, model names were
mapped 1:1 to type names. As a side effect this gained us a type "any",
which is now a device.
To avoid "-device any" silliness and to pave the way for compiling
multiple targets into one executable, adopt a <name>-<arch>-cpu scheme.
Andreas Färber [Sun, 27 Jan 2013 21:27:17 +0000 (22:27 +0100)]
target-openrisc: TYPE_OPENRISC_CPU should be abstract
A basic assumption of CPU subtypes is that only specific models get
instantiated. A user is not supposed to instantiate an <arch>-cpu.
Suppress it via abstract = true, which also drops or32-cpu from
-cpu ? output.
Cc: qemu-stable@nongnu.org Cc: Jia Liu <proljc@gmail.com> Signed-off-by: Andreas Färber <afaerber@suse.de>
Andreas Färber [Sun, 27 Jan 2013 19:16:17 +0000 (20:16 +0100)]
target-m68k: Rename CPU subtypes
In the initial conversion of CPU models to QOM types, model names were
mapped 1:1 to type names. As a side effect this gained us a type "any",
which is now a device.
To avoid "-device any" silliness and to pave the way for compiling
multiple targets into one executable, adopt a <name>-<arch>-cpu scheme.
No functional changes for -cpu arguments or -cpu ? output.
Andreas Färber [Sun, 20 Jan 2013 18:41:06 +0000 (19:41 +0100)]
target-s390x: Mark as unmigratable
CPU_SAVE_VERSION was undefined, so "cpu_common" VMState and
cpu_{save,load}() were not registered. They were no-ops.
Therefore there is no backwards compatibility to keep, so we can mark
S390CPU as unmigratable at device level.
Signed-off-by: Andreas Färber <afaerber@suse.de> Acked-by: Alexander Graf <agraf@suse.de> Reviewed-by: Juan Quintela <quintela@redhat.com>
Andreas Färber [Sun, 20 Jan 2013 18:22:41 +0000 (19:22 +0100)]
target-xtensa: Mark as unmigratable
There was no CPU_SAVE_VERSION defined, so neither "cpu_common" VMState
nor cpu_{save,load}() were registered. Their implementation was no-op.
Therefore there is no backwards compatibility to keep, so mark XtensaCPU
as unmigratable at device level.
Signed-off-by: Andreas Färber <afaerber@suse.de> Reviewed-by: Juan Quintela <quintela@redhat.com>
Andreas Färber [Sun, 20 Jan 2013 18:03:32 +0000 (19:03 +0100)]
target-microblaze: Mark as unmigratable
cpu_{save,load} were no-ops, so de facto it is unmigratable and no
backwards compatibility to keep. Therefore mark the MicroBlazeCPU as
unmigratable at device level the QOM way and suppress "cpu_common"
VMState registration by dropping CPU_SAVE_VERSION.
Signed-off-by: Juan Quintela <quintela@redhat.com> Signed-off-by: Andreas Färber <afaerber@suse.de> Reviewed-by: Juan Quintela <quintela@redhat.com>
Andreas Färber [Sun, 20 Jan 2013 10:43:30 +0000 (11:43 +0100)]
target-unicore32: Mark as unmigratable
CPU_SAVE_VERSION 2 was bogus as both save and load would just throw a
hw_error(). Therefore we can without problems suppress registration of
"cpu_common" VMState by dropping CPU_SAVE_VERSION define and provide an
unmigratable "cpu" VMStateDescription for UniCore32CPU at device level
instead, where we can attach this the QOM way.
Signed-off-by: Juan Quintela <quintela@redhat.com> Signed-off-by: Andreas Färber <afaerber@suse.de> Reviewed-by: Juan Quintela <quintela@redhat.com>
Petar Jovanovic [Wed, 23 Jan 2013 03:17:41 +0000 (04:17 +0100)]
target-mips: fix incorrect test for MTHLIP
The pos field in the DSPControl register is not correctly initialized.
Per documentation, the result of MTHLIP is unpredictable if the value of the
pos field before the execution is greater than 32.
Signed-off-by: Petar Jovanovic <petarj@mips.com> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
Petar Jovanovic [Wed, 23 Jan 2013 02:57:02 +0000 (03:57 +0100)]
target-mips: enable access to DSP ASE if implemented
compute_hflags() will reset DSP h-flags, so MX bit should be initially set
for usermode in cpu_state_reset() if DSP ASE is implemented.
This change will bring back user-mode support for DSP ASE, since one of the
recent changes broke it.
Signed-off-by: Petar Jovanovic <petarj@mips.com> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
Turn MADD.fmt, MSUB.fmt, NMADD.fmt and NMSUB.fmt from fused to unfused
operations, so that they behave in the same way as a separate multiplication
and addition. The instructions were only fused in early MIPS IV processors.
Signed-off-by: Richard Sandiford <rdsandiford@googlemail.com> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
Sign-extend the result of LWR, as is already done for LWL. This is necessary
in the case where LWR loads the full word (i.e. the address is actually
aligned). In the other cases, it is implementation defined whether the
upper 32 bits of the result are unchanged or a copy of bit 31. The latter
seems easier to implement.
Aurelien Jarno [Thu, 31 Jan 2013 22:33:14 +0000 (23:33 +0100)]
Merge branch 'target-arm.next' of git://git.linaro.org/people/pmaydell/qemu-arm
* 'target-arm.next' of git://git.linaro.org/people/pmaydell/qemu-arm:
target-arm: Rename CPU types
target-arm: Fix TCG temp leaks for WI and UNDEF VFP sysreg writes
Aurelien Jarno [Tue, 1 Jan 2013 17:02:24 +0000 (18:02 +0100)]
target-mips: implement DSP (d)append sub-class with TCG
DSP instruction from the (d)append sub-class can be implemented with
TCG. Use a different function for these instructions are they are quite
different from compare-pick sub-class.
Fix BALIGN instruction for negative value, where the value should be
zero-extended before being shift to the right.
Reviewed-by: Richard Henderson <rth@twiddle.net> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
Aurelien Jarno [Tue, 1 Jan 2013 17:02:23 +0000 (18:02 +0100)]
target-mips: add unions to access DSP elements
Instead of playing with bit shifting, add two unions (one for 32-bit
values, one for 64-bit ones) to access all the DSP elements with the
correct type.
This make the code easier to read and less error prone, and allow GCC
to vectorize the code in some cases.
Reviewed-by: Eric Johnson <ericj@mips.com> Reviewed-by: Richard Henderson <rth@twiddle.net> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
Aurelien Jarno [Tue, 1 Jan 2013 17:02:22 +0000 (18:02 +0100)]
target-mips: copy insn_flags in DisasContext
Copy insn_flags in DisasContext to avoid passing a CPUMIPSState pointer
to subroutines, as suggested by Richard Henderson. Change subroutines to
use this new field and remove the first argument.
Reviewed-by: Richard Henderson <rth@twiddle.net> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
Anthony Liguori [Wed, 30 Jan 2013 16:51:47 +0000 (10:51 -0600)]
Merge remote-tracking branch 'pmaydell/arm-devs.next' into staging
# By Christoffer Dall (1) and Peter Maydell (1)
# Via Peter Maydell
* pmaydell/arm-devs.next:
hw/vexpress: Use correct HBI (board model number) for vexpress-a15
hw/arm_sysctl: Clear sysctl cfgctrl start bit
Anthony Liguori [Wed, 30 Jan 2013 16:51:18 +0000 (10:51 -0600)]
Merge remote-tracking branch 'stefanha/trivial-patches' into staging
# By Markus Armbruster (12) and others
# Via Stefan Hajnoczi
* stefanha/trivial-patches:
qmp-commands.hx: s/tray-open/tray_open/ to match qapi schema
tests: Fix {rtc, m48t59}-test build on illumos
qemu-pixman.h: Avoid mutual inclusion loop with console.h
qemu-ga: Fix unchecked strdup() by converting to g_strdup()
qapi: Fix unchecked strdup() by converting to g_strdup()
libcacard: Fix unchecked strdup() by converting to g_strdup()
qemu-log: Plug trivial memory leak in cpu_set_log_filename()
qemu-log: Fix unchecked strdup() by converting to g_strdup()
virtfs-proxy-helper: Fix unchecked strdup() by conv. to g_strdup()
spice: Fix unchecked strdup() by converting to g_strdup()
readline: Fix unchecked strdup() by converting to g_strdup()
hw/9pfs: Fix unchecked strdup() by converting to g_strdup()
g_strdup(NULL) returns NULL; simplify
g_malloc(0) and g_malloc0(0) return NULL; simplify
xilinx_axidma: Fix debug mode compile messages
cadence_gem: Debug mode compile fixes
cadence_ttc: Debug mode compile fixes
vnc: Clean up vncws_send_handshake_response()
Anthony Liguori [Wed, 30 Jan 2013 16:48:23 +0000 (10:48 -0600)]
Merge remote-tracking branch 'afaerber-or/prep-up' into staging
# By Andreas Färber
# Via Andreas Färber
* afaerber-or/prep-up:
prep: Move PReP machine to hw/ppc/
prep_pci: Convert to QOM realizefn
prep_pci: Create PCIBus and PCIDevice in-place
Anthony Liguori [Wed, 30 Jan 2013 16:46:30 +0000 (10:46 -0600)]
Merge remote-tracking branch 'agraf/s390-for-upstream' into staging
# By Cornelia Huck (13) and others
# Via Alexander Graf
* agraf/s390-for-upstream:
s390: Drop set_bit usage in virtio_ccw.
s390: css error codes.
s390: Use s390_cpu_physical_memory_map for tpi.
sclpconsole: Don't instantiate sclpconsole with -nodefaults
s390: Add s390-ccw-virtio machine.
s390-virtio: Check for NULL device in reset hypercall
s390: Move hw files to hw/s390x
virtio-s390: add a reset function to virtio-s390 devices
s390: Make typeinfo const
s390: Add new channel I/O based virtio transport.
s390-virtio: Factor out some initialization code.
s390: Wire up channel I/O in kvm.
s390: Virtual channel subsystem support.
s390: Add channel I/O instructions.
s390: I/O interrupt and machine check injection.
s390: Channel I/O basic definitions.
s390: Add mapping helper functions.
s390: Lowcore mapping helper.
s390: Add default support for SCLP console
Andreas Färber [Sun, 27 Jan 2013 16:30:10 +0000 (17:30 +0100)]
target-arm: Rename CPU types
In the initial conversion of CPU models to QOM types, model names were
mapped 1:1 to type names. As a side effect this gained us a type "any",
which is now a device.
To avoid "-device any" silliness and to pave the way for compiling
multiple targets into one executable, adopt a <name>-<arch>-cpu scheme.
This leads to names like arm926-arm-cpu but is easiest to handle.
No functional changes for -cpu arguments or -cpu ? output.
Suggested-by: Eduardo Habkost <ehabkost@redhat.com> Signed-off-by: Andreas Färber <afaerber@suse.de> Signed-off-by: Andreas Färber <afaerber@suse.de> Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Peter Maydell [Mon, 21 Jan 2013 12:03:47 +0000 (12:03 +0000)]
qemu-pixman.h: Avoid mutual inclusion loop with console.h
Remove an unnecessary mutual inclusion loop between qemu-pixman.h and
console.h, since the former was only including the latter for
'PixelFormat*', which can be provided by typedefs.h. This requires a
minor adjustment to the files which included qemu-pixman.h, since
they were relying on it implicitly dragging in all of console.h.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Acked-by: Gerd Hoffmann <kraxel@redhat.com> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
g_malloc(0) and g_malloc0(0) return NULL; simplify
Once upon a time, it was decided that qemu_malloc(0) should abort.
Switching to glib retired that bright idea. Some code that was added
to cope with it (e.g. in commits 702ef63, b76b6e9) is still around.
Bury it.
Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Use appropriate types, drop superfluous casts, use sizeof, don't
exploit that this particular call of gnutls_fingerprint() doesn't
change its last argument.
Signed-off-by: Markus Armbruster <armbru@redhat.com> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Alex Williamson [Thu, 24 Jan 2013 00:46:13 +0000 (17:46 -0700)]
vfio-pci: Enable PCIe extended config space
We don't know pre-init time whether the device we're exposing is PCIe
or legacy PCI. We could ask for it to be specified via a device
option, but that seems like too much to ask of the user. Instead we
can assume everything will be PCIe, which makes PCI-core allocate
enough config space. Removing the flag during init leaves the space
allocated, but allows legacy PCI devices to report the real device
config space size to rest of Qemu.
Signed-off-by: Alex Williamson <alex.williamson@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Laszlo Ersek [Thu, 24 Jan 2013 09:31:20 +0000 (10:31 +0100)]
PIIX3: reset the VM when the Reset Control Register's RCPU bit gets set
Traditional PCI config space access is achieved by writing a 32 bit
value to io port 0xcf8 to identify the bus, device, function and config
register. Port 0xcfc then contains the register in question. But if you
write the appropriate pair of magic values to 0xcf9, the machine will
reboot. Spectacular! And not standardised in any way (certainly not part
of the PCI spec), so different chipsets may have different requirements.
Booo.
In the PIIX3 spec, IO port 0xcf9 is specified as the Reset Control
Register. Bit 1 (System Reset, SRST) would normally differentiate between
soft reset and hard reset, but we ignore the difference beyond allowing
the guest to read it back.
RHBZ reference: 890459
This patch introduces the following overlap between the preexistent
"pci-conf-idx" region and the "piix3-reset-control" region just being
added. Partial output from "info mtree":
I sanity-checked the patch by booting a RHEL-6.3 guest and found no
problems. I summoned gdb and set a breakpoint on rcr_write() in order to
gather a bit more confidence. Relevant frames of the stack:
The "ioport_write_table" and "ioport_opaque" arrays describe the flattened
IO port space. The first array is less interesting (it selects a thunk
function). The "ioport_opaque" array is interesting because it decides how
writing to the port is implemented ultimately.
The higher priority of "piix3-reset-control" ensures that the 0xcf9
entries in ioport_write_table / ioport_opaque will always belong to it,
independently of its relative registration order versus "pci-conf-idx".
Signed-off-by: Laszlo Ersek <lersek@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
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