They are not used from anywhere but common.c which is where these are
defined so make them static.
Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru>
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
This makes the error report more informative.
Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru>
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
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Merge remote-tracking branch 'remotes/ehabkost/tags/x86-pull-request' into staging
* remotes/ehabkost/tags/x86-pull-request:
target-i386: Move APIC ID compatibility code to pc.c
target-i386: Require APIC ID to be explicitly set before CPU realize
target-i386: Set APIC ID using cpu_index on CONFIG_USER
linux-user: Check for cpu_init() errors
target-i386: Move CPUX86State.cpuid_apic_id to X86CPU.apic_id
target-i386: Simplify error handling on cpu_x86_init_user()
target-i386: Eliminate cpu_init() function
target-i386: Rename cpu_x86_init() to cpu_x86_init_user()
target-i386: Move topology.h to include/hw/i386
target-i386: Eliminate unnecessary get_cpuid_vendor() function
target-i386: Simplify listflags() function
Conflicts:
target-i386/cpu.c
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
For good measure, ensure that the following sequence:
thread 1 calls qemu_mutex_lock_iothread
thread 2 calls qemu_mutex_lock_iothread
VCPU thread are created
VCPU thread enters execution loop
results in the VCPU threads letting the other two threads run
and obeying iothread_requesting_mutex even if the VCPUs are
not halted. To do this, check iothread_requesting_mutex
before execution starts.
Tested-by: Leon Alrae <leon.alrae@imgtec.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
When two threads (other than the low-priority TCG VCPU thread)
are competing for the iothread lock, a deadlock can happen. This
is because iothread_requesting_mutex is set to false by the first
thread that gets the mutex, and then the VCPU thread might never
yield from the execution loop. If iothread_requesting_mutex is
changed from a bool to a counter, the deadlock is fixed.
However, there is another bug in qemu_mutex_lock_iothread that
can be triggered by the new call_rcu thread. The bug happens
if qemu_mutex_lock_iothread is called before the CPUs are
created. In that case, first_cpu is NULL and the caller
segfaults in qemu_mutex_lock_iothread. To fix this, just
do not do the kick if first_cpu is NULL.
Reported-by: Leon Alrae <leon.alrae@imgtec.com>
Reported-by: Andreas Gustafsson <gson@gson.org>
Tested-by: Leon Alrae <leon.alrae@imgtec.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
s->blocker is really only used in hw/scsi/virtio-scsi.c; the only places
where it is used in hw/scsi/virtio-scsi-dataplane.c is when it is
allocated and when it is freed. That does not make a whole lot of sense
(and is actually wrong because this leads to s->blocker potentially
being NULL when blk_op_block_all() is called in virtio-scsi.c), so move
the allocation and destruction of s->blocker to the device realization
and unrealization in virtio-scsi.c, respectively.
Case in point:
$ echo -e 'eject drv\nquit' | \
x86_64-softmmu/qemu-system-x86_64 \
-monitor stdio -machine accel=qtest -display none \
-object iothread,id=thr -device virtio-scsi-pci,iothread=thr \
-drive if=none,file=test.qcow2,format=qcow2,id=drv \
-device scsi-cd,drive=drv
Without this patch:
(qemu) eject drv
[1] 10102 done
10103 segmentation fault (core dumped)
With this patch:
(qemu) eject drv
Device 'drv' is busy: block device is in use by data plane
(qemu) quit
Signed-off-by: Max Reitz <mreitz@redhat.com>
Message-Id: <1425057113-26940-1-git-send-email-mreitz@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
relink binary whenever config-devices.mak changes:
this makes sense as we are adding/removing devices,
so binary has to be relinked to be up to date.
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Message-Id: <1424332114-13440-2-git-send-email-mst@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
V=1 should show what's going on, it's not nice
to silence things unconditionally.
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Message-Id: <1424332114-13440-1-git-send-email-mst@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This patch enables parallel building of QEMU in MSYS+MinGW environment.
Currently an attempt to build QEMU in parallel fails on generation of
version.lo (and version.o too).
The cause of the failure is that when listing prerequisites "Makefile"
references "config-host.h" by absolute path in some rules and by relative
path in others. Make cannot figure out that these references points to the
same file which leads to the race: the generation of "version.*" which
requires "$(BUILD_DIR)/config-host.h" is launched in parallel with the
generation of "config-host.h" needed by other "Makefile" targets.
This patch removes "$(BUILD_DIR)/" prefix from corresponding prerequisite
of "version.*". There is no other prerequisites "$(BUILD_DIR)/config-host.h"
found.
Also note that not every version of MSYS is able to build QEMU in parallel,
see: "http://sourceforge.net/p/mingw/bugs/1950/". The suggested version is
1.0.17.
Signed-off-by: Vasily Efimov <real@ispras.ru>
Message-Id: <1424264377-5992-1-git-send-email-real@ispras.ru>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Save the write protected flag and check before reopen.
Signed-off-by: Fam Zheng <famz@redhat.com>
Message-Id: <1424839208-5195-1-git-send-email-famz@redhat.com>
[Fixed typo in the name of the new field. - Paolo]
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Currently the ivshmem device is built whenever both PCI and KVM support are
included. This patch gives it its own config option to allow easier
customization of whether to include it. It's enabled by default in the
same circumstances as now - when both PCI and KVM are available.
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Reviewed-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com>
Message-Id: <1425017077-18487-4-git-send-email-david@gibson.dropbear.id.au>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Currently the "platform-bus" device is included for all softmmu builds.
This bridge is intended for use on any platforms that require dynamic
creation of sysbus devices. However, at present it is used only for the
PPC E500 target, with plans for the ARM "virt" target in the immediate
future.
To avoid a not-very-useful entry appearing in "qemu -device ?" output on
other targets, this patch makes a specific config option for platform-bus
and enables it (for now) only on ppc configurations which include E500
and on ARM (which always includes the "virt" target).
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Message-Id: <1425017077-18487-3-git-send-email-david@gibson.dropbear.id.au>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
The i82801b11, ioh3420 and xio3130 PCI Express devices are currently
included in the build unconditionally.
While they could theoretically appear on any target platform with PCI-E,
they're pretty unlikely to appear on platforms that aren't Intel derived.
Therefore, to avoid presenting unlikely-to-be-relevant devices to the user,
add config options to enable these components, and enable them by default
only on x86 and arm platforms.
(Note that this patch does include these for aarch64, via its inclusion of
arm-softmmu.mak).
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Reviewed-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com>
Message-Id: <1425017077-18487-2-git-send-email-david@gibson.dropbear.id.au>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This patch replaces time() function calls with calls to
qemu_clock_get_ns(QEMU_CLOCK_HOST). It makes such requests deterministic
in record/replay mode of icount.
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Pavel Dovgalyuk <Pavel.Dovgaluk@ispras.ru>
Message-Id: <20150227131102.11912.89850.stgit@PASHA-ISP>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
It's not safe to call blk_set_aio_context from outside BQL because of
the bdrv_drain_all there. Let's put it in the hotplug callback which
will be called by qdev device realization for each scsi device attached
to the bus.
Signed-off-by: Fam Zheng <famz@redhat.com>
Message-Id: <1423969591-23646-3-git-send-email-famz@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Even if the caller has both the old and the new AioContext's, there can
be a deadlock, due to the leading bdrv_drain_all.
Suppose there are four io threads (A, B, A0, B0) with A and B owning a
BDS for each (bs_a, bs_b); Now A wants to move bs_a to iothread A0, and
B wants to move bs_b to B0, at the same time:
iothread A iothread B
--------------------------------------------------------------------------
aio_context_acquire(A0) /* OK */ aio_context_acquire(B0) /* OK */
bdrv_set_aio_context(bs_a, A0) bdrv_set_aio_context(bs_b, B0)
-> bdrv_drain_all() -> bdrv_drain_all()
-> acquire A /* OK */ -> acquire A /* blocked */
-> acquire B /* blocked */ -> acquire B
... ...
Deadlock happens because A is waiting for B, and B is waiting for A.
Signed-off-by: Fam Zheng <famz@redhat.com>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Message-Id: <1423969591-23646-2-git-send-email-famz@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This mimics what is done in qdev_device_add, and lets the device be
freed in case something goes wrong. Otherwise, object_unparent returns
immediately without freeing the device, which is on the other hand left
in the parent bus's list of children.
scsi_bus_legacy_handle_cmdline then returns an error, and the HBA is
destroyed as well with object_unparent. But the lingering device that
was not removed in scsi_bus_legacy_add_drive cannot be removed now either,
and bus_unparent gets stuck in an infinite loop trying to empty the list
of children.
The right fix of course would be to assert in bus_add_child that the
device already has a bus, and remove the "safety net" that adds the
drive to the QOM tree in device_set_realized. I am not yet sure whether
that would entail changing all callers to qdev_create (as well as
isa_create and usb_create and the corresponding _try_create versions).
Reported-by: Markus Armbruster <armbru@redhat.com>
Tested-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Don't convert numbers or bools to strings for use with qemu_opt_set(),
simply use qemu_opt_set_number() or qemu_opt_set_bool() instead.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Don't convert numbers to strings for use with qemu_opt_set(), simply
use qemu_opt_set_number() instead.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
img_convert() and img_amend() use qemu_opts_do_parse(), which reports
errors with qerror_report_err(). Its error messages aren't helpful
here, the caller reports one that actually makes sense. Reproducer:
$ qemu-img convert -o backing_format=raw in.img out.img
qemu-img: Invalid parameter 'backing_format'
qemu-img: Invalid options for file format 'raw'
To fix, propagate errors through qemu_opts_do_parse(). This lifts the
error reporting into callers. Drop it from img_convert() and
img_amend(), keep it in qemu_chr_parse_compat(), bdrv_img_create().
Since I'm touching qemu_opts_do_parse() anyway, write a function
comment for it.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Since I'm touching qemu_opts_parse() anyway, write a function comment
for it.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
qemu_opt_set() is a wrapper around qemu_opt_set() that reports the
error with qerror_report_err().
Most of its users assume the function can't fail. Make them use
qemu_opt_set_err() with &error_abort, so that should the assumption
ever break, it'll break noisily.
Just two users remain, in util/qemu-config.c. Switch them to
qemu_opt_set_err() as well, then rename qemu_opt_set_err() to
qemu_opt_set().
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
bdrv_img_create() uses qemu_opt_set(), which reports errors with
qerror_report_err(). Its error messages aren't helpful here, the
caller reports one that actually makes sense. I don't know how to
trigger the error conditions, though.
Switch to qemu_opt_set_err() to get rid of the unwanted messages.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
add_old_style_options() for img_convert() and img_resize() use
qemu_opt_set(), which reports errors with qerror_report_err(). Its
error messages aren't helpful here, the caller reports one that
actually makes sense. Reproducer:
$ qemu-img convert -B raw in.img out.img
qemu-img: Invalid parameter 'backing_file'
qemu-img: Backing file not supported for file format 'raw'
Switch to qemu_opt_set_err() to get rid of the unwanted messages.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Return the Error object instead of reporting it with
qerror_report_err().
Change callers that assume the function can't fail to pass
&error_abort, so that should the assumption ever break, it'll break
noisily.
Turns out all callers outside its unit test assume that. We could
drop the Error ** argument, but that would make the interface less
regular, so don't.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Return the Error object instead of reporting it with
qerror_report_err().
Change callers that assume the function can't fail to pass
&error_abort, so that should the assumption ever break, it'll break
noisily.
Turns out all callers outside its unit test assume that. We could
drop the Error ** argument, but that would make the interface less
regular, so don't.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Return the Error object instead of reporting it with
qerror_report_err().
Change callers that assume the function can't fail to pass
&error_abort, so that should the assumption ever break, it'll break
noisily.
Turns out all callers outside its unit test assume that. We could
drop the Error ** argument, but that would make the interface less
regular, so don't.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
* remotes/qmp-unstable/queue/qmp:
qapi-types: add C99 index names to arrays
monitor: Fix missing err = NULL in client_migrate_info()
balloon: Fix typo
hmp: Fix warning from smatch (wrong argument in function call)
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
1. guest reIPL changes (Fan Zhang)
Implements subcode 5 and 6 of diag 0x308. This allows to use
/sys/firmware/[re]ipl/ccw/* and the chreipl and lsreipl tools in
Linux. In addition to the normal "change the disk" this also
allows to switch from booting an external kernel into rebooting
from a disk.
2. Memory page table walking (Thomas Huth)
Fix several page table walking functions, used in several places
like gdb server and instruction handling. Also use these functions
in several I/O related functions.
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Merge remote-tracking branch 'remotes/borntraeger/tags/s390x-20150218' into staging
Features for s390x/kvm
1. guest reIPL changes (Fan Zhang)
Implements subcode 5 and 6 of diag 0x308. This allows to use
/sys/firmware/[re]ipl/ccw/* and the chreipl and lsreipl tools in
Linux. In addition to the normal "change the disk" this also
allows to switch from booting an external kernel into rebooting
from a disk.
2. Memory page table walking (Thomas Huth)
Fix several page table walking functions, used in several places
like gdb server and instruction handling. Also use these functions
in several I/O related functions.
# gpg: Signature made Wed Feb 18 09:13:22 2015 GMT using RSA key ID B5A61C7C
# gpg: Good signature from "Christian Borntraeger (IBM) <borntraeger@de.ibm.com>"
* remotes/borntraeger/tags/s390x-20150218: (29 commits)
s390x/helper: Remove s390_cpu_physical_memory_map
s390x/pci: Rework memory access in zpci instruction
s390x/ioinst: Rework memory access in TPI instruction
s390x/ioinst: Rework memory access in CHSC instruction
s390x/ioinst: Rework memory access in STCRW instruction
s390x/ioinst: Rework memory access in TSCH instruction
s390x/ioinst: Set condition code in ioinst_handle_tsch() handler
s390x/ioinst: Rework memory access in STSCH instruction
s390x/ioinst: Rework memory access in SSCH instruction
s390x/ioinst: Rework memory access in MSCH instruction
s390x/css: Make schib parameter of css_do_msch const
s390x/mmu: Add function for accessing guest memory
s390x/kvm: Add function for injecting pgm access exceptions
s390x/mmu: Clean up mmu_translate_asc()
s390x/mmu: Check bit 52 in page table entry
s390x/mmu: Renaming related to the ASCE confusion
s390x/mmu: Add support for read-only regions
s390x/mmu: Fix the exception codes for illegal table entries
s390x/mmu: Fix exception types when checking the ASCEs
s390x/mmu: Fix translation exception code in lowcore
...
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
The APIC ID compatibility code is required only for PC, and now that
x86_cpu_initfn() doesn't use x86_cpu_apic_id_from_index() anymore, that
code can be moved to pc.c.
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
Instead of setting APIC ID automatically when creating a X86CPU, require
the property to be set before realizing the object (which all callers of
cpu_x86_create() already do).
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
The PC CPU initialization code already sets apic-id based on the CPU
topology, and CONFIG_USER doesn't need the topology-based APIC ID
calculation code.
Make CONFIG_USER set apic-id before realizing the CPU (just like PC
already does), so we can simplify x86_cpu_initfn later. As there is no
CPU topology configuration in CONFIG_USER, just use cpu_index as the
APIC ID.
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
This was the only caller of cpu_init() that was not checking for NULL
yet.
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
The field doesn't need to be inside CPUState, and it is not specific for
the CPUID instruction, so move and rename it.
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
Instead of putting extra logic inside cpu.h, just do everything inside
cpu_x86_init_user().
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
The function is used only for CONFIG_USER, so make its purpose clear.
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
This will allow the PC code to use the header, and lets us eliminate the
QEMU_INCLUDES hack inside tests/Makefile.
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
The function was used in only two places. In one of them, the function
made the code less readable by requiring temporary te[bcd]x variables.
In the other one we can simply inline the existing code.
Reviewed-by: Andreas Färber <afaerber@suse.de>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
listflags() had lots of unnecessary complexity. Instead of printing to a
buffer that will be immediately printed, simply call the printing
function directly. Also, remove the fbits and flags arguments that were
always set to the same value. Also, there's no need to list the flags in
reverse order.
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
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Merge remote-tracking branch 'remotes/kraxel/tags/pull-usb-20150218-1' into staging
usb: error handling fixes from Markus, make sysbus ehci arm-only.
# gpg: Signature made Wed Feb 18 09:54:13 2015 GMT using RSA key ID D3E87138
# gpg: Good signature from "Gerd Hoffmann (work) <kraxel@redhat.com>"
# gpg: aka "Gerd Hoffmann <gerd@kraxel.org>"
# gpg: aka "Gerd Hoffmann (private) <kraxel@gmail.com>"
* remotes/kraxel/tags/pull-usb-20150218-1:
Make sysbus EHCI devices ARM only by default
PPC: Don't use legacy -usbdevice support for setting up board
r2d: Don't use legacy -usbdevice support for setting up board
usb: Change usb_create_simple() to abort on failure
usb: Suppress bogus error when automatic usb-hub creation fails
usb: Do not prefix error_setg() messages with "Error: "
usb: Improve -usbdevice error reporting a bit
usb: usb_create() can't fail, drop useless error handling
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
