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There are several error messages that identify a BlockDriverState by
its device name. However those errors can be produced in nodes that
don't have a device name associated.
In those cases we should use bdrv_get_device_or_node_name() to fall
back to the node name and produce a more meaningful message. The
messages are also updated to use the more generic term 'node' instead
of 'device'.
Signed-off-by: Alberto Garcia <berto@igalia.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Message-id: 9823a1f0514fdb0692e92868661c38a9e00a12d6.1428485266.git.berto@igalia.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
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This function gets the device name associated with a BlockDriverState,
or its node name if the device name is empty.
Signed-off-by: Alberto Garcia <berto@igalia.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Message-id: 4fa30aa8d61d9052ce266fd5429a59a14e941255.1428485266.git.berto@igalia.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
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update virtio blk header from latest linux, include comment fixups.
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Message-id: 1428854036-12806-1-git-send-email-mst@redhat.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
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This patch changes block_job_pause to increase the pause counter and
block_job_resume to decrease it.
The counter will allow calling block_job_pause/block_job_resume
unconditionally on a job when we need to suspend the IO temporarily.
From now on, each block_job_resume must be paired with a block_job_pause
to keep the counter balanced.
The user pause from QMP or HMP will only trigger block_job_pause once
until it's resumed, this is achieved by adding a user_paused flag in
BlockJob.
One occurrence of block_job_resume in mirror_complete is replaced with
block_job_enter which does what is necessary.
In block_job_cancel, the cancel flag is good enough to instruct
coroutines to quit loop, so use block_job_enter to replace the unpaired
block_job_resume.
Upon block job IO error, user is notified about the entering to the
pause state, so this pause belongs to user pause, set the flag
accordingly and expect a matching QMP resume.
[Extended doc comments as suggested by Paolo Bonzini
<pbonzini@redhat.com>.
--Stefan]
Signed-off-by: Fam Zheng <famz@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Reviewed-by: Alberto Garcia <berto@igalia.com>
Message-id: 1428069921-2957-2-git-send-email-famz@redhat.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
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Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
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This is the first step in pushing down acquire/release, and will let
rfifolock drop the contention callback feature.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Message-id: 1424449612-18215-3-git-send-email-pbonzini@redhat.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
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By using thread-local storage, aio_poll can stop using global data during
g_poll_ns. This will make it possible to drop callbacks from rfifolock.
[Moved npfd = 0 assignment to end of walking_handlers region as
suggested by Paolo. This resolves the assert(npfd == 0) assertion
failure in pollfds_cleanup().
--Stefan]
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Message-id: 1424449612-18215-2-git-send-email-pbonzini@redhat.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
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The lack of ffs(3) in the MinGW headers is a hint that we shouldn't rely
on it. MinGW 4.9.2 does not make it available for linking when QEMU's
./configure --enable-debug is used (release builds are fine though).
Now that all QEMU code has been switched to ctz32() there is no need for
ffs(3).
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Message-id: 1427124571-28598-9-git-send-email-stefanha@redhat.com
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
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This commit was generated mechanically by coccinelle from the following
semantic patch:
@@
expression val;
@@
- (ffs(val) - 1)
+ ctz32(val)
The call sites have been audited to ensure the ffs(0) - 1 == -1 case
never occurs (due to input validation, asserts, etc). Therefore we
don't need to worry about the fact that ctz32(0) == 32.
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Message-id: 1427124571-28598-5-git-send-email-stefanha@redhat.com
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
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'remotes/pmaydell/tags/pull-target-arm-20150427' into staging
target-arm queue:
* memory system updates to support transaction attributes
* set user-mode and secure attributes for accesses made by ARM CPUs
* rename c1_coproc to cpacr_el1
* adjust id_aa64pfr0 when has_el3 CPU property disabled
* allow ARMv8 SCR.SMD updates
# gpg: Signature made Mon Apr 27 16:14:30 2015 BST using RSA key ID 14360CDE
# gpg: Good signature from "Peter Maydell <peter.maydell@linaro.org>"
* remotes/pmaydell/tags/pull-target-arm-20150427:
Allow ARMv8 SCR.SMD updates
target-arm: Adjust id_aa64pfr0 when has_el3 CPU property disabled
target-arm: rename c1_coproc to cpacr_el1
target-arm: Check watchpoints against CPU security state
target-arm: Use attribute info to handle user-only watchpoints
target-arm: Add user-mode transaction attribute
target-arm: Use correct memory attributes for page table walks
target-arm: Honour NS bits in page tables
Switch non-CPU callers from ld/st*_phys to address_space_ld/st*
exec.c: Capture the memory attributes for a watchpoint hit
exec.c: Add new address_space_ld*/st* functions
exec.c: Make address_space_rw take transaction attributes
exec.c: Convert subpage memory ops to _with_attrs
Add MemTxAttrs to the IOTLB
Make CPU iotlb a structure rather than a plain hwaddr
memory: Replace io_mem_read/write with memory_region_dispatch_read/write
memory: Define API for MemoryRegionOps to take attrs and return status
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
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A predefined scope in the ACPI specs is precede with a backslash.
Signed-off-by: Gal Hammer <ghammer@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Igor Mammedov <imammedo@redhat.com>
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- implements QEMU hardware part of memory hot unplug protocol
described at "docs/spec/acpi_mem_hotplug.txt"
- handles memory remove notification event
- handles device eject notification
Reviewed-by: Igor Mammedov <imammedo@redhat.com>
Signed-off-by: Zhu Guihua <zhugh.fnst@cn.fujitsu.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
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The flags field is declared with default update rule 'Preserve',
this patch extends aml_field() to support UpdateRule so that we
can specify different values per field.
Reviewed-by: Igor Mammedov <imammedo@redhat.com>
Signed-off-by: Zhu Guihua <zhugh.fnst@cn.fujitsu.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
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This patch adds unplug cb for memory device. It resets memory status
"is_enabled" in acpi_memory_unplug_cb(), removes the corresponding
memory region, unregisters vmstate, and unparents the object.
Reviewed-by: Igor Mammedov <imammedo@redhat.com>
Signed-off-by: Tang Chen <tangchen@cn.fujitsu.com>
Signed-off-by: Zhu Guihua <zhugh.fnst@cn.fujitsu.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
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This patch adds unplug request cb for memory device, and adds the
is_removing boolean field to MemStatus. This field is used to indicate
whether the memory device in slot has been requested to be ejected.
This field is set to true in acpi_memory_unplug_request_cb().
Reviewed-by: Igor Mammedov <imammedo@redhat.com>
Signed-off-by: Tang Chen <tangchen@cn.fujitsu.com>
Signed-off-by: Zhu Guihua <zhugh.fnst@cn.fujitsu.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
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no space needed after *.
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
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Currently we will try to traverse all virtqueues to find a subset that
using a specific vector. This is sub optimal when we will support
hundreds or even thousands of virtqueues. So this patch introduces a
method which could be used by transport to get all virtqueues that
using a same vector. This is done through QLISTs and the number of
QLISTs was queried through a transport specific method. When guest
setting vectors, the virtqueue will be linked and helpers for traverse
the list was also introduced.
The first user will be virtio pci which will use this to speed up
MSI-X masking and unmasking handling.
Cc: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
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staging
spice: misc fixes.
# gpg: Signature made Mon Apr 27 12:03:16 2015 BST 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/spice/tags/pull-spice-20150427-1:
spice: learn to hide cursor
spice: set pointer position on hotspot
spice: fix mouse cursor position
spice: fix simple display on bigendian hosts
monitor: Make client_migrate_info synchronous
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
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Move generic acpi building helpers into dedictated file and this
can be shared with other machines.
Signed-off-by: Shannon Zhao <zhaoshenglong@huawei.com>
Signed-off-by: Shannon Zhao <shannon.zhao@linaro.org>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
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The ACPI related header file acpi-defs.h, includes definitions that
apply on other architectures as well. Move it in `include/hw/acpi/`
to sanely include it from other architectures.
Signed-off-by: Alvise Rigo <a.rigo@virtualopensystems.com>
Signed-off-by: Shannon Zhao <zhaoshenglong@huawei.com>
Signed-off-by: Shannon Zhao <shannon.zhao@linaro.org>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
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ram_addr_t is an internal interface, everyone should go through
MemoryRegion. Clean it up by making rom_add_blob return a
MemoryRegion* and using the new qemu_ram_resize infrastructure.
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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This is a simple MemoryRegion wrapper for qemu_ram_resize.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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If DMA's owning thread cancels the IO while the bounce buffer's owning thread
is notifying the "cpu client list", a use-after-free happens:
continue_after_map_failure dma_aio_cancel
------------------------------------------------------------------
aio_bh_new
qemu_bh_delete
qemu_bh_schedule (use after free)
Also, the old code doesn't run the bh in the right AioContext.
Fix both problems by passing a QEMUBH to cpu_register_map_client.
Signed-off-by: Fam Zheng <famz@redhat.com>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Message-Id: <1426496617-10702-6-git-send-email-famz@redhat.com>
[Remove unnecessary forward declaration. - Paolo]
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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The Spice protocol uses cursor position on hotspot: the client is
applying hotspot offset when drawing the cursor.
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
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Denis Kirjanov is busy getting spice run on ppc64 and trapped into this
one. Spice wire format is little endian, so we have to explicitly say
we want little endian when letting pixman convert the data for us.
Reported-by: Denis Kirjanov <kirjanov@gmail.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
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Live migration with spice works like this today:
(1) client_migrate_info monitor cmd
(2) spice server notifies client, client connects to target host.
(3) qemu waits until spice client connect is finished.
(4) send over vmstate (i.e. main part of live migration).
(5) spice handover to target host.
(3) is implemented by making client_migrate_info a async monitor
command. This is the only async monitor command we have.
The original reason to implement this dance was that qemu did not accept
new tcp connections while the incoming migration was running, so (2) and
(4) could not be done in parallel. That issue was fixed long ago though.
Qemu version 1.3.0 (released Dec 2012) and newer happily accept tcp
connects while the incoming migration runs.
Time to drop step (3). This patch does exactly that, by making the
monitor command synchronous and removing the code needed to handle the
async monitor command in ui/spice-core.c
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
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Add a transaction attribute indicating that a memory access is being
done from user-mode (unprivileged). This corresponds to an equivalent
signal in ARM AMBA buses.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
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Honour the NS bit in ARM page tables:
* when adding entries to the TLB, include the Secure/NonSecure
transaction attribute
* set the NS bit in the PAR when doing ATS operations
Note that we don't yet correctly use the NSTable bit to
cause the page table walk itself to use the right attributes.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
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Capture the memory attributes for the transaction which triggered
a watchpoint; this allows CPU specific code to implement features
like ARM's "user-mode only WPs also hit for LDRT/STRT accesses
made from privileged code". This change also correctly passes
through the memory attributes to the underlying device when
a watchpoint access doesn't hit.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
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Add new address_space_ld*/st* functions which allow transaction
attributes and error reporting for basic load and stores. These
are named to be in line with the address_space_read/write/rw
buffer operations.
The existing ld/st*_phys functions are now wrappers around
the new functions.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
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Make address_space_rw take transaction attributes, rather
than always using the 'unspecified' attributes.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Reviewed-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
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Add a MemTxAttrs field to the IOTLB, and allow target-specific
code to set it via a new tlb_set_page_with_attrs() function;
pass the attributes through to the device when making IO accesses.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Reviewed-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
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Make the CPU iotlb a structure rather than a plain hwaddr;
this will allow us to add transaction attributes to it.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Reviewed-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
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Rather than retaining io_mem_read/write as simple wrappers around
the memory_region_dispatch_read/write functions, make the latter
public and change all the callers to use them, since we need to
touch all the callsites anyway to add MemTxAttrs and MemTxResult
support. Delete io_mem_read and io_mem_write entirely.
(All the callers currently pass MEMTXATTRS_UNSPECIFIED
and convert the return value back to bool or ignore it.)
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
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Define an API so that devices can register MemoryRegionOps whose read
and write callback functions are passed an arbitrary pointer to some
transaction attributes and can return a success-or-failure status code.
This will allow us to model devices which:
* behave differently for ARM Secure/NonSecure memory accesses
* behave differently for privileged/unprivileged accesses
* may return a transaction failure (causing a guest exception)
for erroneous accesses
This patch defines the new API and plumbs the attributes parameter through
to the memory.c public level functions io_mem_read() and io_mem_write(),
where it is currently dummied out.
The success/failure response indication is also propagated out to
io_mem_read() and io_mem_write(), which retain the old-style
boolean true-for-error return.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Acked-by: Paolo Bonzini <pbonzini@redhat.com>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
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Add a new function to get a nice label for a given QemuConsole.
Drop the labeling code in gtk.c and use the new function instead.
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
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The type name for the SoC device, unlike those of its sub-devices,
did not follow the QOM naming conventions. While the usage is internal
only, this is exposed through QMP and HMP, so fix it before release.
Cc: Alistair Francis <alistair.francis@xilinx.com>
Signed-off-by: Andreas Färber <afaerber@suse.de>
Reviewed-by: Alistair Francis <alistair@alistair23.me>
Message-id: 1428676676-23056-1-git-send-email-afaerber@suse.de
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
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After qemu_iovec_destroy, the QEMUIOVector's size is zeroed and
the zero size ultimately is used to compute virtqueue_push's len
argument. Therefore, reads from virtio-blk devices did not
migrate their results correctly. (Writes were okay).
Save the size in virtio_blk_handle_request, and use it when the request
is completed.
Based on a patch by Wen Congyang.
Signed-off-by: Wen Congyang <wency@cn.fujitsu.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Tested-by: Li Zhijian <lizhijian@cn.fujitsu.com>
Message-id: 1427997044-392-1-git-send-email-pbonzini@redhat.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
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Signed-off-by: Greg Kurz <gkurz@linux.vnet.ibm.com>
Acked-by: Jason Wang <jasowang@redhat.com>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
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Commit 89b516d8b9444ece8ccabb322a9389587c7a7b83 ("glib: add
compatibility interface for g_get_monotonic_time()") aimed
at making qemu build with old glib versions. At least SLES11SP3,
however, contains a backport of g_get_monotonic_time() while
keeping the reported glib version at 2.22.
Let's work around this by a strategically placed #define.
Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Message-id: 1427987865-433-2-git-send-email-cornelia.huck@de.ibm.com
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
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Since the BSP bit is writable on real hardware, during reset all the CPUs which
were not chosen to be the BSP should have their BSP bit cleared. This fix is
required for KVM to work correctly when it changes the BSP bit.
An additional fix is required for QEMU tcg to allow software to change the BSP
bit.
Signed-off-by: Nadav Amit <namit@cs.technion.ac.il>
Message-Id: <1427932716-11800-1-git-send-email-namit@cs.technion.ac.il>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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If QEMU forks after the CPU threads have been created, qemu_mutex_lock_iothread
will not be able to do qemu_cpu_kick_thread. There is no solution other than
assuming that forks after the CPU threads have been created will end up in an
exec. Forks before the CPU threads have been created (such as -daemonize)
have to call rcu_after_fork manually.
Notably, the oxygen theme for GTK+ forks and shows a "No such process" error
without this patch.
This patch can be reverted once the iothread loses the "kick the TCG thread"
magic.
User-mode emulation does not use the iothread, so it can also call
rcu_after_fork.
Reported by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Tested by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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If backends implement the can_be_deleted and it returns false,
Then the qmp_object_del won't delete the given backends.
Signed-off-by: Lin Ma <lma@suse.com>
Message-Id: <1427704589-7688-2-git-send-email-lma@suse.com>
Reviewed-by: Igor Mammedov <imammedo@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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Capture the explicit setting of "usb=no" into a separate bool, and
use it to skip the update of machine->usb in the board init function.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Alexander Graf <agraf@suse.de>
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'remotes/ehabkost/tags/work/numa-verify-cpus-pull-request' into staging
NUMA queue 2015-03-19
# gpg: Signature made Thu Mar 19 19:25:53 2015 GMT using RSA key ID 984DC5A6
# gpg: Can't check signature: public key not found
* remotes/ehabkost/tags/work/numa-verify-cpus-pull-request:
numa: Print warning if no node is assigned to a CPU
pc: fix default VCPU to NUMA node mapping
numa: introduce machine callback for VCPU to node mapping
numa: Reject configuration if CPU appears on multiple nodes
numa: Reject CPU indexes > max_cpus
numa: Fix off-by-one error at MAX_CPUMASK_BITS check
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
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staging
usb: bugfix collection.
# gpg: Signature made Fri Mar 20 07:51:19 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-20150320-1:
ehci: fix segfault when hot-unplugging ehci controller
ohci: fix resource cleanup leak
uhci: fix segfault when hot-unplugging uhci controller
hw/usb: Include USB files only if necessary
usb/dev-storage: Avoid qerror_report_err() outside QMP handlers
usb/dev-storage: Fix QMP device_add missing encryption key failure
monitor usb: Inline monitor_read_bdrv_key_start()'s first part
monitor: Plug memory leak in monitor_read_bdrv_key_start()
monitor: Drop dead QMP check from monitor_read_password()
uhci: Convert to realize
ohci: Complete conversion to realize
usb: Improve companion configuration error messages
usb: Propagate errors through usb_register_companion()
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
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Current default round-robin way of distributing VCPUs among
NUMA nodes might be wrong in case on multi-core/threads
CPUs. Making guests confused wrt topology where cores from
the same socket are on different nodes.
Allow a machine to override default mapping by providing
MachineClass::cpu_index_to_socket_id()
callback which would allow it group VCPUs from a socket
on the same NUMA node.
Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Reviewed-by: Andreas Färber <afaerber@suse.de>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
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virtio-serial api: guest_writable callback for users
# gpg: Signature made Thu Mar 19 12:06:55 2015 GMT using RSA key ID 854083B6
# gpg: Good signature from "Amit Shah <amit@amitshah.net>"
# gpg: aka "Amit Shah <amit@kernel.org>"
# gpg: aka "Amit Shah <amitshah@gmx.net>"
* remotes/amit/tags/vser-for-2.3-3:
virtio: serial: expose a 'guest_writable' callback for users
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
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'remotes/mjt/tags/pull-trivial-patches-2015-03-19' into staging
trivial patches for 2015-03-19
# gpg: Signature made Thu Mar 19 08:57:54 2015 GMT using RSA key ID A4C3D7DB
# gpg: Good signature from "Michael Tokarev <mjt@tls.msk.ru>"
# gpg: aka "Michael Tokarev <mjt@corpit.ru>"
# gpg: aka "Michael Tokarev <mjt@debian.org>"
* remotes/mjt/tags/pull-trivial-patches-2015-03-19: (24 commits)
qga/commands-posix: Fix resource leak
elf-loader: Add missing error handling for call of lseek
elf-loader: Fix truncation warning from coverity
hmp: Fix texinfo documentation
Fix typos in comments
qtest/ahci: Fix a bit mask expression
vl: fix resource leak with monitor_fdset_add_fd
smbios: add max speed comdline option for type-17 (meory device) structure
pc-dimm: Add description for device list.
configure: enable kvm on x32
error: Replace error_report() & error_free() with error_report_err()
arm: fix memory leak
qmp: Drop unused .user_print from command definitions
hmp: Fix definition of command quit
target-moxie: Fix warnings from Sparse (one-bit signed bitfield)
block/qapi: Fix Sparse warning
Fix remaining warnings from Sparse (void return)
qom: Fix warning from Sparse
target-mips: Fix warning from Sparse
arm/nseries: Fix warnings from Sparse
...
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
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Users of virtio-serial may want to know when a port becomes writable. A
port can stop accepting writes if the guest port is open but not being
read from. In this case, data gets queued up in the virtqueue, and
after the vq is full, writes to the port do not succeed.
When the guest reads off a vq element, and adds a new one for the host
to put data in, we can tell users the port is available for more writes,
via the new ->guest_writable() callback.
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Amit Shah <amit.shah@redhat.com>
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