requester.cpp uses this pattern to receive an error and pass it on to
the caller (err_is_set() macro peeled off for clarity):
... code that may set errset->errp ...
if (errset->errp && *errset->errp) {
... handle error ...
}
This breaks when errset->errp is null. As far as I can tell, it
currently isn't, so this is merely fragile, not actually broken.
The robust way to do this is to receive the error in a local variable,
then propagate it up, like this:
Error *err = NULL;
... code that may set err ...
if (err)
... handle error ...
error_propagate(errset->errp, err);
}
See also commit 5e54769, 0f230bf, a903f40.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
qga_vss_fsfreeze() casts error_set_win32() from
void (*)(Error **, int, ErrorClass, const char *, ...)
to
void (*)(void **, int, int, const char *, ...)
The result is later called. Since the two types are not compatible,
the call is undefined behavior. It works in practice anyway.
However, there's no real need for trickery here. Clean it up as
follows:
* Declare struct Error, and fix the first parameter.
* Switch to error_setg_win32(). This gets rid of the troublesome
ErrorClass parameter. Requires converting error_setg_win32() from
macro to function, but that's trivially easy, because this is the
only user of error_set_win32().
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Duplicated when commit 680d16d added error_set_errno(), and again when
commit 20840d4 added error_set_win32().
Make the original copy in error_set() reusable by factoring out
error_setv(), then rewrite error_set_errno() and error_set_win32() on
top of it.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Fixes all over the place.
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
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Merge remote-tracking branch 'remotes/mst/tags/for_upstream' into staging
virtio,pc,acpi fixes, cleanups
Fixes all over the place.
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
# gpg: Signature made Thu 10 Sep 2015 10:16:18 BST using RSA key ID D28D5469
# gpg: Good signature from "Michael S. Tsirkin <mst@kernel.org>"
# gpg: aka "Michael S. Tsirkin <mst@redhat.com>"
* remotes/mst/tags/for_upstream:
hw/pci: fix pci_update_mappings() trace events
pc: memhotplug: keep reserved-memory-end broken on 2.4 and earlier machines
pc: memhotplug: fix incorrectly set reserved-memory-end
acpi: Remove unused definition.
virtio: avoid leading underscores for helpers
pc: Remove redundant arguments from xen_hvm_init()
pci: Fix pci_device_iommu_address_space() bus propagation
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
The current trace prototypes and (matching) trace calls lead to
"unorthodox" PCI BDF notation in at least the stderr trace backend. For
example, the four BARs of a QXL video card at 00:01.0 (bus 0, slot 1,
function 0) are traced like this (PID and timestamps removed):
pci_update_mappings_add d=0x7f14a73bf890 00:00.1 0,0x84000000+0x4000000
pci_update_mappings_add d=0x7f14a73bf890 00:00.1 1,0x80000000+0x4000000
pci_update_mappings_add d=0x7f14a73bf890 00:00.1 2,0x88200000+0x2000
pci_update_mappings_add d=0x7f14a73bf890 00:00.1 3,0xd060+0x20
The slot and function values are in reverse order.
Stick with the conventional BDF notation.
Cc: "Michael S. Tsirkin" <mst@redhat.com>
Cc: Don Koch <dkoch@verizon.com>
Cc: qemu-trivial@nongnu.org
Fixes: 7828d75045
Signed-off-by: Laszlo Ersek <lersek@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
it will prevent guests on old machines from seeing
inconsistent memory mapping in firmware/ACPI views.
Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Eduardo Habkost <ehabkost@redhat.com>
reserved-memory-end tells firmware address from which
it could start treating memory as PCI address space
and map PCI BARs after it to avoid collisions with
RAM.
Currently it is incorrectly pointing to address where
hotplugged memory range starts which could redirect
hotplugged RAM accesses to PCI BARs when firmware
maps them over RAM or viceverse.
Fix this by pointing reserved-memory-end to the end
of memory hotplug area.
Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Eduardo Habkost <ehabkost@redhat.com>
Signed-off-by: Richard W.M. Jones <rjones@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Commit ef546f1275 ("virtio: add
feature checking helpers") introduced a helper __virtio_has_feature.
We don't want to use reserved identifiers, though, so let's
rename __virtio_has_feature to virtio_has_feature and virtio_has_feature
to virtio_vdev_has_feature.
Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Remove arguments that can be found in PCMachineState.
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
he current code walks up the bus tree for an iommu, however it passes
to the iommu_fn() callback the bus/devfn of the immediate child of
the level where the callback was found, rather than the original
bus/devfn where the search started from.
This prevents iommu's like POWER8 (and in fact also Q35) to properly
provide an address space for a subset of devices that aren't immediate
children of the iommu.
PCIe carries the originator bdfn acccross to the iommu on all DMA
transactions, so we must be able to properly identify devices at all
levels.
This changes the function pci_device_iommu_address_space() to pass
the original pointers to the iommu_fn() callback instead.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Linux returns 0 if no conversion was made, while OS X and presumably
the BSDs return EINVAL. The OS X convention rejects more invalid
inputs, so convert to it and adjust the test case.
Windows returns 1 from strtoul and strtoull (instead of -1) for
negative out-of-range input; fix it up.
Reported-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
tb_lock has to be taken inside the mmap_lock (example:
tb_invalidate_phys_range is called by target_mmap), but
tb_link_page is taking the mmap_lock and it is called
with the tb_lock held.
To fix this, take the mmap_lock in tb_find_slow, not
in tb_link_page.
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
There is some iffy lock hierarchy going on in translate-all.c. To
fix it, we need to take the mmap_lock in cpu-exec.c. Make the
functions globally available.
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
page_find is reading the radix tree outside all locks, so it has to
use the RCU primitives. It does not need RCU critical sections
because the PageDescs are never removed, so there is never a need
to wait for the end of code sections that use a PageDesc.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This just removes spinlock as it is not used anymore.
Signed-off-by: KONRAD Frederic <fred.konrad@greensocs.com>
Message-Id: <1439220437-23957-6-git-send-email-fred.konrad@greensocs.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
spinlock is only used in two cases:
* cpu-exec.c: to protect TranslationBlock
* mem_helper.c: for lock helper in target-i386 (which seems broken).
It's a pthread_mutex_t in user-mode, so we can use QemuMutex directly,
with an #ifdef. The #ifdef will be removed when multithreaded TCG
will need the mutex as well.
Signed-off-by: KONRAD Frederic <fred.konrad@greensocs.com>
Message-Id: <1439220437-23957-5-git-send-email-fred.konrad@greensocs.com>
Signed-off-by: Emilio G. Cota <cota@braap.org>
[Merge Emilio G. Cota's patch to remove volatile. - Paolo]
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This hides the tcg_halt_cond and tcg_cpu_thread global variables
inside qemu_tcg_init_vcpu. Multi-threaded TCG will need one
QemuCond and one QemuThread per virtual cpu, so it's preferrable
to use cpu->halt_cond and cpu->thread.
Signed-off-by: KONRAD Frederic <fred.konrad@greensocs.com>
Message-Id: <1439220437-23957-9-git-send-email-fred.konrad@greensocs.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Protect the list of queued work items with something other than
the BQL, as a preparation for running the work items outside it.
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: KONRAD Frederic <fred.konrad@greensocs.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
commit 9b8424d573
"exec: split length -> used_length/max_length"
changed field names in struct RAMBlock
It turns out that scripts/dump-guest-memory.py was
poking at this field, update it accordingly.
Cc: qemu-stable@nongnu.org
Cc: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Message-Id: <1440666378-3152-1-git-send-email-mst@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This adds "--enable-jemalloc" and "--disable-jemalloc" to allow linking
to jemalloc memory allocator.
We have already tcmalloc support,
but it seem to not working well with a lot of iothreads/disks.
The main problem is that tcmalloc use a shared thread cache of 16MB
by default.
With more threads, this cache is shared, and some bad garbage collections
can occur if the cache is too low.
It's possible to tcmalloc cache increase it with a env var:
TCMALLOC_MAX_TOTAL_THREAD_CACHE_BYTES=256MB
With default 16MB, performances are really bad with more than 2 disks.
Increasing to 256MB, it's helping but still have problem with 16 disks/iothreads.
Jemalloc don't have performance problem with default configuration.
Here the benchmark results in iops of 1 qemu vm randread 4K iodepth=32,
with rbd block backend (librbd is doing a lot of memory allocation),
1 iothread by disk
glibc malloc
------------
1 disk 29052
2 disks 55878
4 disks 127899
8 disks 240566
15 disks 269976
jemalloc
--------
1 disk 41278
2 disks 75781
4 disks 195351
8 disks 294241
15 disks 298199
tcmalloc 2.2.1 default 16M cache
--------------------------------
1 disk 37911
2 disks 67698
4 disks 41076
8 disks 43312
15 disks 37569
tcmalloc : 256M cache
---------------------------
1 disk 33914
2 disks 58839
4 disks 148205
8 disks 213298
15 disks 218383
Signed-off-by: Alexandre Derumier <aderumier@odiso.com>
Message-Id: <1434711418-20429-1-git-send-email-aderumier@odiso.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Coccinelle chokes on some idioms from compiler.h and queue.h.
Extract those in a macro file, to be used with "--macro-file
scripts/cocci-macro-file.h".
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Every arch adds its disas configury to both its own config as well
config_disas_all. Make a small function do to both at once.
Signed-off-by: Peter Crosthwaite <crosthwaite.peter@gmail.com>
Message-Id: <1440844439-19391-1-git-send-email-crosthwaite.peter@gmail.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Fully removing Sparse support requires more invasive changes. Only
remove the really kernel-specific parts such as address space names.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Mostly change severity levels, but some tests can also be adjusted to refer
to QEMU APIs or data structures.
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Mixed declarations do come in handy at the top of #ifdef blocks.
Reluctantly allow this particular usage and suggest an alternative.
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Carlos L. Torres <carlos.torres@rackspace.com>
Message-Id: <11ac63e95d88551f1c2c9b1216b15d3cb8ba4468.1437346779.git.carlos.torres@rackspace.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Add wrapper for strtoull() function. Include unit tests.
Signed-off-by: Carlos L. Torres <carlos.torres@rackspace.com>
Message-Id: <e0f0f611c9a81f3c29f451d0b17d755dfab1e90a.1437346779.git.carlos.torres@rackspace.com>
[Use uint64_t in prototype. - Paolo]
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Add wrapper for strtoll() function. Include unit tests.
Signed-off-by: Carlos L. Torres <carlos.torres@rackspace.com>
Message-Id: <7454a6bb9ec03b629e8beb4f109dd30dc2c9804c.1437346779.git.carlos.torres@rackspace.com>
[Use int64_t in prototype, since that's what QEMU uses. - Paolo]
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Add wrapper for strtoul() function. Include unit tests.
Signed-off-by: Carlos L. Torres <carlos.torres@rackspace.com>
Message-Id: <9621b4ae8e35fded31c715c2ae2a98f904f07ad0.1437346779.git.carlos.torres@rackspace.com>
[Fix tests for 32-bit build. - Paolo]
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Add wrapper for strtol() function. Include unit tests.
Signed-off-by: Carlos L. Torres <carlos.torres@rackspace.com>
Message-Id: <07199f1c0ff3892790c6322123aee1e92f580550.1437346779.git.carlos.torres@rackspace.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
l1_map is based on physical addresses in full-system mode, as pointed
out in an earlier comment. Said comment also mentions that virtual
addresses are only used in l1_map in user-only mode.
Signed-off-by: Emilio G. Cota <cota@braap.org>
Message-Id: <1440375847-17603-11-git-send-email-cota@braap.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
We were unlocking this lock after fork, which is wrong since
only the thread that holds a mutex is allowed to unlock it.
Signed-off-by: Emilio G. Cota <cota@braap.org>
Message-Id: <1440375847-17603-9-git-send-email-cota@braap.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Using ccache with CCACHE_BASEDIR set to $(SRC_PATH) or a parent will
rewrite all absolute paths to relative paths. This interacts poorly with
QEMU's two-level build directory scheme. For example, lets say
BUILD_DIR=$(SRC_PATH)/build so build/blockdev.d will contain:
blockdev.o: ../blockdev.c ../include/sysemu/block-backend.h \
Now the target build under build/x86_64-softmmu or similar will depend
on ../blockdev.o which in turn will get make to source ../blockdev.d to
check its dependencies. Since make always considers paths relative to
the current working directory rather than the makefile the path appeared
in the relative path to ../blockdev.c is useless.
This change simply adds the top level build directory to vpath so paths
relative to the source directory, top build directory, and target build
directory all work just fine.
Signed-off-by: Michael Marineau <michael.marineau@coreos.com>
Message-Id: <1439103775-11836-1-git-send-email-michael.marineau@coreos.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Message-Id: <1439547914-18249-1-git-send-email-dgilbert@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signals are slow and do not exist on Win32. The previous patches
have done most of the legwork to introduce memory barriers (some
of them were even there already for the sake of Windows!) and
we can now set the flags directly in the iothread.
qemu_cpu_kick_thread is not used anymore on TCG, since the TCG thread is
never outside usermode while the CPU is running (not halted). Instead run
the content of the signal handler (now in qemu_cpu_kick_no_halt) directly.
qemu_cpu_kick_no_halt is also used in qemu_mutex_lock_iothread to avoid
the overhead of qemu_cond_broadcast.
Reviewed-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Use the same API to trigger interruption of a CPU, no matter if
under TCG or KVM. There is no difference: these calls come from
the CPU thread, so the qemu_cpu_kick calls will send a signal
to the running thread and it will be processed synchronously,
just like a call to cpu_exit. The only difference is in the
overhead, but neither call to cpu_exit (now qemu_cpu_kick)
is in a hot path.
Reviewed-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Synchronize the remaining pair of accesses in cpu_signal. These should
be necessary on Windows as well, at least in theory. Probably
SuspendProcess and ResumeProcess introduce some implicit memory
barrier.
Reviewed-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
TCG has not been reading cpu->current_tb from signal handlers for years.
The code that synchronized cpu_exec with the signal handler is not
needed anymore.
Reviewed-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
TLS is now required on all platforms, so DECLARE_TLS/DEFINE_TLS is not
needed anymore. Removing it does not break Windows because of the
previous patch.
Reviewed-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This is already useful on Windows in order to remove tls.h, because
accesses to current_cpu are done from a different thread on that
platform. It will be used on POSIX platforms as soon TCG stops using
signals to interrupt the execution of translated code.
Reviewed-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This is unused. cpu_exit now is almost exclusively an internal function
to the CPU execution loop. In a few patches, we'll change the remaining
occurrences to qemu_cpu_kick, making it truly internal.
Reviewed-by: Richard henderson <rth@twiddle.net>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
The i8257 DMA controller uses an idle bottom half, which by default
does not cause the main loop to exit. Therefore, the DMA_schedule
function is there to ensure that the CPU relinquishes the iothread
mutex to the iothread.
However, this is not enough since the iothread will call
aio_compute_timeout() and go to sleep again. In the iothread
world, forcing execution of the idle bottom half is much simpler,
and only requires a call to qemu_notify_event(). Do it, removing
the need for the "cpu_request_exit" pseudo-irq. The next patch
will remove it.
Reviewed-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
* Implement priority handling properly via GICC_APR
* Enable TZ extensions on the GIC if we're using them
* Minor preparatory patches for EL3 support
* cadence_gem: Correct Marvell PHY SPCFC reset value
* Support AHCI in ZynqMP
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Merge remote-tracking branch 'remotes/pmaydell/tags/pull-target-arm-20150908' into staging
target-arm queue:
* Implement priority handling properly via GICC_APR
* Enable TZ extensions on the GIC if we're using them
* Minor preparatory patches for EL3 support
* cadence_gem: Correct Marvell PHY SPCFC reset value
* Support AHCI in ZynqMP
# gpg: Signature made Tue 08 Sep 2015 17:48:33 BST using RSA key ID 14360CDE
# gpg: Good signature from "Peter Maydell <peter.maydell@linaro.org>"
# gpg: aka "Peter Maydell <pmaydell@gmail.com>"
# gpg: aka "Peter Maydell <pmaydell@chiark.greenend.org.uk>"
* remotes/pmaydell/tags/pull-target-arm-20150908:
xlnx-zynqmp: Connect the sysbus AHCI to ZynqMP
xlnx-zynqmp.c: Convert some of the error_propagate() calls to error_abort
ahci.c: Don't assume AHCIState's parent is AHCIPCIState
ahci: Separate the AHCI state structure into the header
cadence_gem: Correct Marvell PHY SPCFC reset value
target-arm: Add AArch64 access to PAR_EL1
target-arm: Correct opc1 for AT_S12Exx
target-arm: Log the target EL when taking exceptions
target-arm: Fix default_exception_el() function for the case when EL3 is not supported
hw/arm/virt: Enable TZ extensions on the GIC if we are using them
hw/arm/virt: Default to not providing TrustZone support
hw/cpu/{a15mpcore, a9mpcore}: enable TrustZone in GIC if it is enabled in CPUs
hw/intc/arm_gic_common: Configure IRQs as NS if doing direct NS kernel boot
hw/arm: new interface for devices which need to behave differently for kernel boot
qom: Add recursive version of object_child_for_each
hw/intc/arm_gic: Actually set the active bits for active interrupts
hw/intc/arm_gic: Drop running_irq and last_active arrays
hw/intc/arm_gic: Fix handling of GICC_APR<n>, GICC_NSAPR<n> registers
hw/intc/arm_gic: Running priority is group priority, not full priority
armv7m_nvic: Implement ICSR without using internal GIC state
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
