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2015-07-01main-loop: introduce qemu_mutex_iothread_lockedPaolo Bonzini1-0/+5
This function will be used to avoid recursive locking of the iothread lock whenever address_space_rw/ld*/st* are called with the BQL held, which is almost always the case. Tracking whether the iothread is owned is very cheap (just use a TLS variable) but requires some care because now the lock must always be taken with qemu_mutex_lock_iothread(). Previously this wasn't the case. Outside TCG mode this is not a problem. In TCG mode, we need to be careful and avoid the "prod out of compiled code" step if already in a VCPU thread. This is easily done with a check on current_cpu, i.e. qemu_in_vcpu_thread(). Hopefully, multithreaded TCG will get rid of the whole logic to kick VCPUs whenever an I/O event occurs! Cc: Frederic Konrad <fred.konrad@greensocs.com> Message-Id: <1434646046-27150-3-git-send-email-pbonzini@redhat.com> Reviewed-by: Fam Zheng <famz@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2015-06-22Include qapi/qmp/qerror.h exactly where neededMarkus Armbruster1-1/+0
In particular, don't include it into headers. Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Reviewed-by: Luiz Capitulino <lcapitulino@redhat.com>
2015-06-22qerror: Finally unused, clean upMarkus Armbruster3-9/+2
Remove it except for two things in qerror.h: * Two #include to be cleaned up separately to avoid cluttering this patch. * The QERR_ macros. Mark as obsolete. Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Reviewed-by: Luiz Capitulino <lcapitulino@redhat.com>
2015-06-22qerror: Clean up QERR_ macros to expand into a single stringMarkus Armbruster1-1/+1
These macros expand into error class enumeration constant, comma, string. Unclean. Has been that way since commit 13f59ae. The error class is always ERROR_CLASS_GENERIC_ERROR since the previous commit. Clean up as follows: * Prepend every use of a QERR_ macro by ERROR_CLASS_GENERIC_ERROR, and delete it from the QERR_ macro. No change after preprocessing. * Rewrite error_set(ERROR_CLASS_GENERIC_ERROR, ...) into error_setg(...). Again, no change after preprocessing. Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Reviewed-by: Luiz Capitulino <lcapitulino@redhat.com>
2015-06-12iohandler: Change return type of qemu_set_fd_handler to "void"Fam Zheng1-4/+4
Signed-off-by: Fam Zheng <famz@redhat.com> Message-id: 1433400324-7358-14-git-send-email-famz@redhat.com Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2015-06-12main-loop: Drop qemu_set_fd_handler2Fam Zheng1-9/+0
All users are converted to qemu_set_fd_handler now, drop qemu_set_fd_handler2 and IOHandlerRecord.fd_read_poll. Signed-off-by: Fam Zheng <famz@redhat.com> Message-id: 1433400324-7358-9-git-send-email-famz@redhat.com Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2015-06-12stubs: Add qemu_set_fd_handlerFam Zheng1-0/+8
Some qemu_set_fd_handler2 stub callers will be converted to call qemu_set_fd_handler, add this stub for them before making the change. Signed-off-by: Fam Zheng <famz@redhat.com> Message-id: 1433400324-7358-2-git-send-email-famz@redhat.com Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2015-06-02monitor: Change return type of monitor_cur_is_qmp() to boolMarkus Armbruster1-2/+2
Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Reviewed-by: Luiz Capitulino <lcapitulino@redhat.com>
2015-03-09Merge remote-tracking branch 'remotes/mst/tags/for_upstream' into stagingPeter Maydell2-11/+0
pci, pc, virtio fixes and cleanups A bunch of fixes all over the place. All of ACPI refactoring has been merged. Legacy pci commands have been dropped. virtio header cleanup initial patches from virtio-1.0 branch Signed-off-by: Michael S. Tsirkin <mst@redhat.com> * remotes/mst/tags/for_upstream: (130 commits) acpi: drop unused code aml-build: comment fix acpi-build: fix typo in comment acpi: update generated files vhost user:support vhost user nic for non msi guests aml-build: fix build for glib < 2.22 acpi: update generated files Makefile.target: binary depends on config-devices acpi-test-data: update after pci rewrite acpi, mem-hotplug: use PC_DIMM_SLOT_PROP in acpi_memory_plug_cb(). pci-hotplug-old: Has been dead for five major releases, bury pci: Give a few helpers internal linkage acpi: make build_*() routines static to aml-build.c pc: acpi: remove not used anymore ssdt-[misc|pcihp].hex.generated blobs pc: acpi-build: drop template patching and create PCI bus tree dynamically tests: ACPI: update pc/SSDT.bridge due to new alg of PCI tree creation pc: acpi-build: simplify PCI bus tree generation tests: add ACPI blobs for qemu with bridge cases tests: bios-tables-test: add support for testing bridges tests: ACPI test blobs update due to PCI0._CRS changes ... Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Conflicts: hw/pci/pci-hotplug-old.c
2015-03-04pc-dimm: add a function to calculate VM's current RAM sizezhanghailiang1-0/+5
The global parameter 'ram_size' does not take into account the hotplugged memory. In some codes, we use 'ram_size' as current VM's real RAM size, which is not correct. Add function 'get_current_ram_size' to calculate VM's current RAM size, it will enumerate present memory devices and also plus ram_size. Signed-off-by: zhanghailiang <zhang.zhanghailiang@huawei.com> Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com>
2015-03-01pci-hotplug-old: Has been dead for five major releases, buryMarkus Armbruster2-11/+0
Commit 79ca616 (v1.6.0) accidentally disabled legacy x86-only HMP commands pci_add, pci_del: it defined CONFIG_PCI_HOTPLUG only as make variable, not as preprocessor macro, killing the code conditional on defined(CONFIG_PCI_HOTPLUG_OLD). In all this time, nobody reported the loss. I only noticed it when I tried to test some error reporting change that forced me to touch this old crap again. Fun: git-log hw/pci/pci-hotplug-old.c shows our faith in the backward compatibility god has been strong enough to sacrifice at its altar about a dozen times, but not strong enough to even once verify the legacy feature's still there, let alone works. Remove the commands along with the code backing them. Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2015-02-10stubs: Fix warning caused by missing include statementStefan Weil1-1/+1
Warning from the Sparse static analysis tool: stubs/qtest.c:14:6: warning: symbol 'qtest_allowed' was not declared. Should it be static? Add the missing include statement which declares qtest_allowed. Signed-off-by: Stefan Weil <sw@weilnetz.de> Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
2014-10-20block: Code motion to get rid of stubs/blockdev.cMarkus Armbruster2-13/+0
Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Benoît Canet <benoit.canet@nodalink.com> Reviewed-by: Max Reitz <mreitz@redhat.com> Reviewed-by: Kevin Wolf <kwolf@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2014-09-25block: Keep DriveInfo alive until BlockDriverState diesMarkus Armbruster2-0/+13
If the BDS's refcnt > 0, drive_del() destroys the DriveInfo, but not the BDS. This can happen in three places: * Device model destruction during unplug: blockdev_auto_del() * Xen IDE unplug: pci_piix3_xen_ide_unplug() * drive_del command when no device model is attached: do_drive_del() The other callers of drive_del are on error paths where refcnt == 1. If the user somehow manages to plug in a device model using a BDS that has gone through drive_del(), the legacy configuration passed in DriveInfo doesn't reach the device model, and automatic deletion on unplug doesn't work. Worse, some device models such as scsi-disk crash when DriveInfo doesn't exist. This is theoretical; I didn't research an actual reproducer. The problem was introduced when we replaced DriveInfo reference counting by BDS reference counting in commit a94a3fa..fa510eb. Fix by keeping DriveInfo alive until its BDS dies. This affects qemu_drive_opts: now you can't reuse the same ID for new drive options until the BDS dies. Before, you could, but since the code always attempts to create a BDS with the same ID next, the enclosing operation "create a new drive" failed anyway. Different error path, same result. Unfortunately, the fix involves use of blockdev.c stuff from block.c, which is a layering violation. Fortunately, my forthcoming BlockBackend work will get rid of it again. Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Max Reitz <mreitz@redhat.com> Reviewed-by: Benoît Canet <benoit.canet@nodalink.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2014-08-18monitor: fix use after freeMichael S. Tsirkin1-2/+1
The function monitor_fdset_dup_fd_find_remove() references member of 'mon_fdset' which - when remove flag is set - may be freed in function monitor_fdset_cleanup(). remove is set by monitor_fdset_dup_fd_remove which in practice does not need the returned value, so make it void, and return -1 from monitor_fdset_dup_fd_find_remove. Reported-by: zhanghailiang <zhang.zhanghailiang@huawei.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com>
2014-08-06backends: Introduce chr-testdevPaolo Bonzini2-0/+8
From: Paolo Bonzini <pbonzini@redhat.com> chr-testdev enables a virtio serial channel to be used for guest initiated qemu exits. hw/misc/debugexit already enables guest initiated qemu exits, but only for PC targets. chr-testdev supports any virtio-capable target. kvm-unit-tests/arm is already making use of this backend. Currently there is a single command implemented, "q". It takes a (prefix) argument for the exit code, thus an exit is implemented by writing, e.g. "1q", to the virtio-serial port. It can be used as: $QEMU ... \ -device virtio-serial-device \ -device virtserialport,chardev=ctd -chardev testdev,id=ctd or, use: $QEMU ... \ -device virtio-serial-device \ -device virtconsole,chardev=ctd -chardev testdev,id=ctd to bind it to virtio-serial port0. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Andrew Jones <drjones@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2014-06-24Merge remote-tracking branch 'remotes/qmp-unstable/queue/qmp' into stagingPeter Maydell2-7/+0
* remotes/qmp-unstable/queue/qmp: (43 commits) monitor: protect event emission monitor: protect outbuf and mux_out with mutex qemu-char: make writes thread-safe qemu-char: move pty_chr_update_read_handler around qemu-char: do not call chr_write directly qemu-char: introduce qemu_chr_alloc qapi event: clean up qapi event: convert QUORUM events qapi event: convert GUEST_PANICKED qapi event: convert BALLOON_CHANGE qmp: convert ACPI_DEVICE_OST event qapi event: convert SPICE events qapi event: convert VNC events qapi event: convert NIC_RX_FILTER_CHANGED qapi event: convert other BLOCK_JOB events qapi event: convert BLOCK_IMAGE_CORRUPTED qapi event: convert BLOCK_IO_ERROR and BLOCK_JOB_ERROR qapi event: convert DEVICE_TRAY_MOVED qapi event: convert DEVICE_DELETED qapi event: convert WATCHDOG ... Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2014-06-23qapi event: clean upWenchao Xia2-7/+0
Signed-off-by: Wenchao Xia <wenchaoqemu@gmail.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com>
2014-06-23libqemustub: add more stubs for qemu-charNikolay Nikolaev3-0/+23
Additional stubs: - chr_baum_init - qemu_chr_open_spice_vmc - qemu_chr_open_spice_port Signed-off-by: Nikolay Nikolaev <n.nikolaev@virtualopensystems.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2014-06-23Merge remote-tracking branch 'remotes/stefanha/tags/block-pull-request' into ↵Peter Maydell1-1/+6
staging Block pull request # gpg: Signature made Mon 23 Jun 2014 09:53:49 BST using RSA key ID 81AB73C8 # gpg: Good signature from "Stefan Hajnoczi <stefanha@redhat.com>" # gpg: aka "Stefan Hajnoczi <stefanha@gmail.com>" * remotes/stefanha/tags/block-pull-request: block: asynchronously stop the VM on I/O errors vl: allow other threads to do qemu_system_vmstop_request sheepdog: fix NULL dereference in sd_create QemuOpts: check NULL opts in qemu_opt_get functions block: m25p80: Support read only bdrvs. block: m25p80: sync_page(): Deindent function body. Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2014-06-23console: move chardev declarations to sysemu/char.hMichael S. Tsirkin1-1/+1
move generic chardev APIs to sysemu/char.h, to make them available to callers which can not depend on the whole of ui/console.h. This fixes a build error on systems without pixman-devel: ./configure --disable-tools --disable-docs --target-list=arm-linux-user ... pixman none ... make ... In file included from /data/home/nchip/linaro/qemu/include/ui/console.h:4:0, from /data/home/nchip/linaro/qemu/stubs/vc-init.c:2: /data/home/nchip/linaro/qemu/include/ui/qemu-pixman.h:14:20: fatal error: pixman.h: No such file or directory #include <pixman.h> ^ compilation terminated. Reported-by: Riku Voipio <riku.voipio@iki.fi> Tested-by: Riku Voipio <riku.voipio@iki.fi> Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Message-id: 1403508500-32691-1-git-send-email-mst@redhat.com Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2014-06-23block: asynchronously stop the VM on I/O errorsPaolo Bonzini1-1/+6
With virtio-blk dataplane, I/O errors might occur while QEMU is not in the main I/O thread. However, it's invalid to call vm_stop when we're neither in a VCPU thread nor in the main I/O thread, even if we were to take the iothread mutex around it. To avoid this problem, we can raise a request to the main I/O thread, similar to what QEMU does when vm_stop is called from a CPU thread. We know that bdrv_error_action is called from an AIO callback, and the moment at which the callback will fire is not well-defined; it depends on the moment at which the disk or OS finishes the operation, which can happen at any time. Note that QEMU is certainly not in a CPU thread and we do not need to call cpu_stop_current() like vm_stop() does. However, we need to ensure that any action taken by management will result in correct detection of the error _and_ a running VM. In particular: - the event must be raised after the iostatus has been set, so that "info block" will return an iostatus that matches the event. - the VM must be stopped after the iostatus has been set, so that "info block" will return an iostatus that matches the runstate. The ordering between the STOP and BLOCK_IO_ERROR events is preserved; BLOCK_IO_ERROR is documented to come first. This makes bdrv_error_action() thread safe (assuming QMP events are, which is attacked by a separate series). Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2014-06-19qmp: add query-memory-devices commandIgor Mammedov2-0/+8
... allowing to get state of present memory devices. Currently implemented only for PCDIMMDevice. Signed-off-by: Igor Mammedov <imammedo@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Acked-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2014-06-19Add qtest for vhost-userNikolay Nikolaev1-2/+4
This test creates a 'server' chardev to listen for vhost-user messages. Once VHOST_USER_SET_MEM_TABLE is received it mmaps each received region, and read 1k bytes from it. The read data is compared to data from readl. The test requires hugetlbfs to be already mounted and writable. The mount point defaults to '/hugetlbfs' and can be specified via the environment variable QTEST_HUGETLBFS_PATH. The rom pc-bios/pxe-virtio.rom is used to instantiate a virtio pcicontroller. Signed-off-by: Antonios Motakis <a.motakis@virtualopensystems.com> Signed-off-by: Nikolay Nikolaev <n.nikolaev@virtualopensystems.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com> MST: fix up coding style MST: disable vhost test temporarily This test needs a bit more work: issues have been found on legacy systems, disable it for now to avoid false positives for people. Will re-enable after issues are addressed. Reported-by: Igor Mammedov <imammedo@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2014-06-19libqemustub: add stubs to be able to use qemu-char.cNikolay Nikolaev9-0/+57
chardev depends on lots of external symbols that are not necessarily needed to be able to use, for example, 'socket chardev'. So add stubs for these functions: - bdrv_commit_all - qemu_chr_open_msmouse - is_daemonized - qemu_add_machine_init_done_notifier - monitor_init - qemu_notify_event - vc_init and this array: - serial_hds Signed-off-by: Antonios Motakis <a.motakis@virtualopensystems.com> Signed-off-by: Nikolay Nikolaev <n.nikolaev@virtualopensystems.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2014-06-16dump: Make DumpState and endian conversion routines available for ↵Bharata B Rao1-1/+1
arch-specific dump code Make DumpState and endian conversion routines available for arch-specific dump code by moving into dump.h. DumpState will be needed by arch-specific dump code to access target endian information from DumpState->ArchDumpInfo. Also break the dependency of dump.h from stubs/dump.c by creating a separate dump-arch.h. This patch doesn't change any functionality. Signed-off-by: Bharata B Rao <bharata@linux.ibm.com> [ rebased on top of current master branch, renamed endian helpers to cpu_to_dump{16,32,64}, pass a DumpState * argument to endian helpers, Greg Kurz <gkurz@linux.vnet.ibm.com> ] Signed-off-by: Greg Kurz <gkurz@linux.vnet.ibm.com> [agraf: fix to apply] Signed-off-by: Alexander Graf <agraf@suse.de>
2014-04-25qerror.h: Replace QERR_NOT_SUPPORTED with QERR_UNSUPPORTEDCole Robinson1-1/+1
The former is only used twice, the latter is used over 30 times, and has a nicer error message. Cc: Luiz Capitulino <lcapitulino@redhat.com> Cc: Markus Armbruster <armbru@redhat.com> Signed-off-by: Cole Robinson <crobinso@redhat.com> Reviewed-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com>
2014-04-25monitor: Remove unused monitor_print_filenameCole Robinson2-7/+0
Cc: Luiz Capitulino <lcapitulino@redhat.com> Cc: Markus Armbruster <armbru@redhat.com> Signed-off-by: Cole Robinson <crobinso@redhat.com> Reviewed-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com>
2014-03-14blockdev: Refuse to open encrypted image unless pausedMarkus Armbruster2-0/+7
Opening an encrypted image takes an additional step: setting the key. Between open and the key set, the image must not be used. We have some protection against accidental use in place: you can't unpause a guest while we're missing keys. You can, however, hot-plug block devices lacking keys into a running guest just fine, or insert media lacking keys. In the latter case, notifying the guest of the insert is delayed until the key is set, which may suffice to protect at least some guests in common usage. This patch makes the protection apply in more cases, in a rather heavy-handed way: it doesn't let you open encrypted images unless we're in a paused state. It doesn't extend the protection to users other than the guest (block jobs?). Use of runstate_check() from block.c is disgusting. Best I can do right now. Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Reviewed-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2014-03-13main-loop: Suppress "I/O thread spun" warnings for qtestPeter Maydell2-0/+15
When running under qtest we don't actually have any vcpu threads to be starved, so the warning about the I/O thread spinning isn't relevant, and the way qtest manipulates the simulated clock means the warning is produced a lot as a false positive. Suppress it if qtest_enabled(), so 'make check' output is less noisy. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Signed-off-by: Andreas Färber <afaerber@suse.de>
2014-03-02stubs: Optimize dependencies for gdbstub.cStefan Weil1-1/+3
It does not need qemu-common.h. Including exec/gdbstub.h fixes a warning from static code analyzers and avoids mismatching declarations for xml_builtin. Signed-off-by: Stefan Weil <sw@weilnetz.de> Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
2014-02-26kvm: Introduce kvm_arch_irqchip_createChristoffer Dall2-0/+8
Introduce kvm_arch_irqchip_create an arch-specific hook in preparation for architecture-specific use of the device control API to create IRQ chips. Following patches will implement the ARM irqchip create method to prefer the device control API over the older KVM_CREATE_IRQCHIP API. Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Christoffer Dall <christoffer.dall@linaro.org> Message-id: 1392687720-26806-3-git-send-email-christoffer.dall@linaro.org Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2013-09-17Merge remote-tracking branch 'kiszka/queues/slirp' into stagingAnthony Liguori1-5/+1
# By Liu Ping Fan (3) and Jan Kiszka (1) # Via Jan Kiszka * kiszka/queues/slirp: slirp: clean up slirp_update_timeout slirp: set mainloop timeout with more precise value slirp: define timeout as macro slirp: make timeout local Message-id: cover.1379415024.git.jan.kiszka@siemens.com
2013-09-17slirp: set mainloop timeout with more precise valueLiu Ping Fan1-5/+1
If slirp needs to emulate tcp timeout, then the timeout value for mainloop should be more precise, which is determined by slirp's fasttimo or slowtimo. Achieve this by swap the logic sequence of slirp_pollfds_fill and slirp_update_timeout. Signed-off-by: Liu Ping Fan <pingfank@linux.vnet.ibm.com> Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
2013-09-12scsi: prefer UUID to VM name for the initiator namePaolo Bonzini2-0/+13
The UUID is unique even across multiple hosts, thus it is better than a VM name even if it is less user-friendly. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2013-08-22aio / timers: Rearrange timer.h & make legacy functions call non-legacyAlex Bligh1-1/+1
Rearrange timer.h so it is in order by function type. Make legacy functions call non-legacy functions rather than vice-versa. Convert cpus.c to use new API. Signed-off-by: Alex Bligh <alex@alex.org.uk> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2013-08-08dump: rebase from host-private RAMBlock offsets to guest-physical addressesLaszlo Ersek1-1/+2
RAMBlock.offset --> GuestPhysBlock.target_start RAMBlock.offset + RAMBlock.length --> GuestPhysBlock.target_end RAMBlock.length --> GuestPhysBlock.target_end - GuestPhysBlock.target_start "GuestPhysBlock.host_addr" is only used when writing the dump contents. This patch enables "crash" to work with the vmcore by rebasing the vmcore from the left side of the following diagram to the right side: host-private offset relative to ram_addr RAMBlock guest-visible paddrs 0 +-------------------+.....+-------------------+ 0 | ^ | | ^ | | 640 KB | | 640 KB | | v | | v | 0x0000a0000 +-------------------+.....+-------------------+ 0x0000a0000 | ^ | |XXXXXXXXXXXXXXXXXXX| | 384 KB | |XXXXXXXXXXXXXXXXXXX| | v | |XXXXXXXXXXXXXXXXXXX| 0x000100000 +-------------------+.....+-------------------+ 0x000100000 | ^ | | ^ | | 3583 MB | | 3583 MB | | v | | v | 0x0e0000000 +-------------------+.....+-------------------+ 0x0e0000000 | ^ |. |XXXXXXXXXXXXXXXXXXX| | above_4g_mem_size | . |XXXX PCI hole XXXXX| | v | . |XXXX XXXXX| ram_size +-------------------+ . |XXXX 512 MB XXXXX| . .|XXXXXXXXXXXXXXXXXXX| . +-------------------+ 0x100000000 . | ^ | . | above_4g_mem_size | .| v | +-------------------+ ram_size + 512 MB Related RHBZ: https://bugzilla.redhat.com/show_bug.cgi?id=981582 Signed-off-by: Laszlo Ersek <lersek@redhat.com> Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com>
2013-07-27cpu: Introduce CPUClass::gdb_core_xml_file for GDB_CORE_XMLAndreas Färber2-0/+6
Replace the GDB_CORE_XML define in gdbstub.c with a CPUClass field. Use first_cpu for qSupported and qXfer:features:read: for now. Add a stub for xml_builtin. Signed-off-by: Andreas Färber <afaerber@suse.de>
2013-07-15cpus: Add return value for vm_stop()Kevin Wolf1-1/+1
If flushing the block devices fails, return an error. The VM is stopped anyway. Signed-off-by: Kevin Wolf <kwolf@redhat.com> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
2013-06-28cpu: Change qemu_init_vcpu() argument to CPUStateAndreas Färber1-0/+4
This allows to move the call into CPUState's realizefn. Therefore move the stub into libqemustub.a. Reviewed-by: Richard Henderson <rth@twiddle.net> Signed-off-by: Andreas Färber <afaerber@suse.de>
2013-06-28cpu: Turn cpu_dump_{state,statistics}() into CPUState hooksAndreas Färber1-0/+1
Make cpustats monitor command available unconditionally. Prepares for changing kvm_handle_internal_error() and kvm_cpu_exec() arguments to CPUState. Signed-off-by: Andreas Färber <afaerber@suse.de>
2013-06-11dump: Drop qmp_dump_guest_memory() stub and build for all targetsAndreas Färber1-8/+0
qmp_dump_guest_memory() calls dump_init() and returns an Error when cpu_get_dump_info() returns an error, as done by the stub. So there is no need to have a stub for qmp_dump_guest_memory(). Enable the documentation of the always-present dump-guest-memory command. That way we can drop CONFIG_HAVE_CORE_DUMP and leave configure completely out of the picture for target CPU features. Signed-off-by: Andreas Färber <afaerber@suse.de>
2013-06-10dump: Move stubs into libqemustub.aAndreas Färber2-0/+37
This allows us to drop CONFIG_NO_CORE_DUMP with its indirect dependency on CONFIG_HAVE_CORE_DUMP. Acked-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Andreas Färber <afaerber@suse.de>
2013-05-01cpu: Introduce cpu_resume(), for single CPUIgor Mammedov2-0/+6
Also add a stub for it, to make possible to use it in qom/cpu.c, which is shared with user emulators. Signed-off-by: Igor Mammedov <imammedo@redhat.com> Signed-off-by: Andreas Färber <afaerber@suse.de>
2013-03-12stubs: Add a vmstate_dummy struct for CONFIG_USER_ONLYAndreas Färber1-0/+2
Reviewed-by: Juan Quintela <quintela@redhat.com> Reviewed-by: Eduardo Habkost <ehabkost@redhat.com> Signed-off-by: Andreas Färber <afaerber@suse.de>
2013-03-01hw: move device-hotplug.o to toplevel, compile it oncePaolo Bonzini2-0/+11
The situation with device-hotplug.c is similar to qdev-monitor.c. Add a stub for pci_drive_hot_add, so that it can be compiled once, and move it out of hw/. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2013-02-21slirp: switch to GPollFDStefan Hajnoczi1-4/+2
Slirp uses rfds/wfds/xfds more extensively than other QEMU components. The rarely-used out-of-band TCP data feature is used. That means we need the full table of select(2) to g_poll(3) events: rfds -> G_IO_IN | G_IO_HUP | G_IO_ERR wfds -> G_IO_OUT | G_IO_ERR xfds -> G_IO_PRI I came up with this table by looking at Linux fs/select.c which maps select(2) to poll(2) internally. Another detail to watch out for are the global variables that reference rfds/wfds/xfds during slirp_select_poll(). sofcantrcvmore() and sofcantsendmore() use these globals to clear fd_set bits. When sofcantrcvmore() is called, the wfds bit is cleared so that the write handler will no longer be run for this iteration of the event loop. This actually seems buggy to me since TCP connections can be half-closed and we'd still want to handle data in half-duplex fashion. I think the real intention is to avoid running the read/write handler when the socket has been fully closed. This is indicated with the SS_NOFDREF state bit so we now check for it before invoking the TCP write handler. Note that UDP/ICMP code paths don't care because they are connectionless. Note that slirp/ has a lot of tabs and sometimes mixed tabs with spaces. I followed the style of the surrounding code. Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com> Reviewed-by: Laszlo Ersek <lersek@redhat.com> Message-id: 1361356113-11049-6-git-send-email-stefanha@redhat.com Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2013-01-12stubs: fully replace qemu-tool.c and qemu-user.cPaolo Bonzini14-2/+126
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2013-01-08libqemustub: sysbus_get_default() stubEduardo Habkost2-0/+7
The stub will be used on cases where sysbus.c is not compiled in (e.g. *-user). Note that code that uses NULL as the bus with qdev{_try,}_create() implicitly uses sysbus_get_default() as the bus, and will still require sysbus.c to be compiled in. Signed-off-by: Eduardo Habkost <ehabkost@redhat.com> Signed-off-by: Andreas Färber <afaerber@suse.de>
2013-01-08libqemustub: vmstate register/unregister stubsEduardo Habkost2-0/+18
Add vmstate stub functions, so that qdev.o can be used without savevm.o when vmstate support is not necessary (i.e. by *-user). Signed-off-by: Eduardo Habkost <ehabkost@redhat.com> Signed-off-by: Andreas Färber <afaerber@suse.de>
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