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2015-02-24Merge remote-tracking branch 'remotes/bonzini/tags/for-upstream' into stagingPeter Maydell
- vhost-scsi: add bootindex property - RCU: fix MemoryRegion lifetime issues in PCI; document the rules; convert of AddressSpaceDispatch and RAMList - KVM: add kvm_exit reasons for aarch64 # gpg: Signature made Mon Feb 16 16:32:32 2015 GMT using RSA key ID 78C7AE83 # gpg: Good signature from "Paolo Bonzini <bonzini@gnu.org>" # gpg: aka "Paolo Bonzini <pbonzini@redhat.com>" # gpg: WARNING: This key is not certified with a trusted signature! # gpg: There is no indication that the signature belongs to the owner. # Primary key fingerprint: 46F5 9FBD 57D6 12E7 BFD4 E2F7 7E15 100C CD36 69B1 # Subkey fingerprint: F133 3857 4B66 2389 866C 7682 BFFB D25F 78C7 AE83 * remotes/bonzini/tags/for-upstream: (21 commits) Convert ram_list to RCU exec: convert ram_list to QLIST cosmetic changes preparing for the following patches exec: protect mru_block with RCU rcu: add g_free_rcu rcu: introduce RCU-enabled QLIST exec: RCUify AddressSpaceDispatch exec: make iotlb RCU-friendly exec: introduce cpu_reload_memory_map docs: clarify memory region lifecycle pci: split shpc_cleanup and shpc_free pcie: remove mmconfig memory leak and wrap mmconfig update with transaction memory: keep the owner of the AddressSpace alive until do_address_space_destroy rcu: run RCU callbacks under the BQL rcu: do not let RCU callbacks pile up indefinitely vhost-scsi: set the bootable value of channel/target/lun vhost-scsi: add a property for booting vhost-scsi: expose the TYPE_FW_PATH_PROVIDER interface vhost-scsi: add bootindex property qdev: support to get a device firmware path directly ... Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2015-02-16exec: RCUify AddressSpaceDispatchPaolo Bonzini
Note that even after this patch, most callers of address_space_* functions must still be under the big QEMU lock, otherwise the memory region returned by address_space_translate can disappear as soon as address_space_translate returns. This will be fixed in the next part of this series. Reviewed-by: Fam Zheng <famz@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2015-02-16qtest: Fix deadloop by running main loop AIO context's timersFam Zheng
qemu_clock_run_timers() only takes care of main_loop_tlg, we shouldn't forget aio timer list groups. Currently, the qemu_clock_deadline_ns_all (a few lines above) counts all the timergroups of this clock type, including aio tlg, but we don't fire them, so they are never cleared, which makes a dead loop. For example, this function hangs when trying to drive throttled block request queue with qtest clock_step. Signed-off-by: Fam Zheng <famz@redhat.com> Acked-by: Paolo Bonzini <pbonzini@redhat.com> Message-id: 1421661103-29153-1-git-send-email-famz@redhat.com Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2015-02-02cpu-exec: simplify init_delay_paramsPaolo Bonzini
With the introduction of QEMU_CLOCK_VIRTUAL_RT, the computation of sc->diff_clk can be simplified nicely: qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL) - qemu_clock_get_ns(QEMU_CLOCK_REALTIME) + cpu_get_clock_offset() = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL) - (qemu_clock_get_ns(QEMU_CLOCK_REALTIME) - cpu_get_clock_offset()) = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL) - (qemu_clock_get_ns(QEMU_CLOCK_REALTIME) + timers_state.cpu_clock_offset) = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL) - qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL_RT) Cc: Sebastian Tanase <sebastian.tanase@openwide.fr> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2015-01-14cpus: consistently use QEMU_CLOCK_VIRTUAL_RT for icount_warp_rt timerPavel Dovgalyuk
Fix mismatch between timer_new_ms and timer_mod. Signed-off-by: Pavel Dovgalyuk <Pavel.Dovgaluk@ispras.ru> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2014-12-20cpu: initialize cpu->exception_index on resetPaolo Bonzini
This unbreaks linux-user (broken by e511b4d, cpu-exec: reset exception_index correctly, 2014-11-26). Reported-by: Eduardo Habkost <ehabkost@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Tested-by: Laurent Desnogues <laurent.desnogues@gmail.com> Tested-by: Eduardo Habkost <ehabkost@redhat.com> Message-id: 1418989994-17244-2-git-send-email-pbonzini@redhat.com Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2014-12-15cpus: make icount warp behave well with respect to stop/contPavel Dovgalyuk
This patch makes icount warp use the new QEMU_CLOCK_VIRTUAL_RT clock. This way, icount's QEMU_CLOCK_VIRTUAL will never count time during which the virtual machine is stopped. Signed-off-by: Pavel Dovgalyuk <Pavel.Dovgaluk@ispras.ru> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2014-12-15icount: introduce cpu_get_icount_rawPavel Dovgalyuk
Separate accessing the instruction counter from the compensation for speed and halting that are introduced by qemu_icount_bias. This introduces new infrastructure used by the record/replay patches. Signed-off-by: Pavel Dovgalyuk <Pavel.Dovgaluk@ispras.ru> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2014-12-15icount: set can_do_io outside TB executionPavel Dovgalyuk
This patch sets can_do_io function to allow reading icount within cpu-exec, but outside TB execution. Signed-off-by: Pavel Dovgalyuk <Pavel.Dovgaluk@ispras.ru> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2014-12-15cpu-exec: reset exception_index correctlyPavel Dovgalyuk
Exception index is reset at every entry at every entry into cpu_exec() function. This may cause missing the exceptions while replaying them. This patch moves exception_index reset to the locations where they are processed. Signed-off-by: Pavel Dovgalyuk <Pavel.Dovgaluk@ispras.ru> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2014-09-16Introduce cpu_clean_all_dirtyMarcelo Tosatti
Introduce cpu_clean_all_dirty, to force subsequent cpu_synchronize_all_states to read in-kernel register state. Cc: qemu-stable@nongnu.org Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2014-09-11cpu: init vmstate for ticks and clock offsetPavel Dovgalyuk
Ticks and clock offset used by CPU timers have to be saved in vmstate. But vmstate for these fields registered only in icount mode. Missing registration leads to breaking the continuity when vmstate is loaded. This patch introduces new initialization function which fixes this. Signed-off-by: Pavel Dovgalyuk <Pavel.Dovgaluk@ispras.ru> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2014-09-01target-tricore: Add target stubs and qom-cpuBastian Koppelmann
Add TriCore target stubs, and QOM cpu, and Maintainer Signed-off-by: Bastian Koppelmann <kbastian@mail.uni-paderborn.de> Message-id: 1409572800-4116-2-git-send-email-kbastian@mail.uni-paderborn.de Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2014-08-25s390x: Migrate to new NMI interfaceAlexey Kardashevskiy
This implements an NMI interface for s390 and s390-ccw machines. This removes #ifdef s390 branch in qmp_inject_nmi so new s390's nmi_monitor_handler() callback is going to be used for NMI. Since nmi_monitor_handler()-calling code is platform independent, CPUState::cpu_index is used instead of S390CPU::env.cpu_num. There should not be any change in behaviour as both @cpu_index and @cpu_num are global CPU numbers. Note that s390_cpu_restart() already takes care of the specified cpu, so we don't need to schedule via async_run_on_cpu(). Since the only error s390_cpu_restart() can return is ENOSYS, convert it to QERR_UNSUPPORTED. Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru> Reviewed-by: Alexander Graf <agraf@suse.de> Reviewed-by: Cornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2014-08-25cpus: Define callback for QEMU "nmi" commandAlexey Kardashevskiy
This introduces an NMI (Non Maskable Interrupt) interface with a single nmi_monitor_handler() method. A machine or a device can implement it. This searches for an QOM object with this interface and if it is implemented, calls it. The callback implements an action required to cause debug crash dump on in-kernel debugger invocation. The callback returns Error**. This adds a nmi_monitor_handle() helper which walks through all objects to find the interface. The interface method is called for all found instances. This adds support for it in qmp_inject_nmi(). Since no architecture supports it at the moment, there is no change in behaviour. This changes inject-nmi command description for HMP and QMP. Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru> Reviewed-by: Alexander Graf <agraf@suse.de> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2014-08-07monitor: Add drift info to 'info jit'Sebastian Tanase
Show in 'info jit' the current delay between the host clock and the guest clock. In addition, print the maximum advance and delay of the guest compared to the host. Signed-off-by: Sebastian Tanase <sebastian.tanase@openwide.fr> Tested-by: Camille Bégué <camille.begue@openwide.fr> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2014-08-06cpu-exec: Add sleeping algorithmSebastian Tanase
The goal is to sleep qemu whenever the guest clock is in advance compared to the host clock (we use the monotonic clocks). The amount of time to sleep is calculated in the execution loop in cpu_exec. At first, we tried to approximate at each for loop the real time elapsed while searching for a TB (generating or retrieving from cache) and executing it. We would then approximate the virtual time corresponding to the number of virtual instructions executed. The difference between these 2 values would allow us to know if the guest is in advance or delayed. However, the function used for measuring the real time (qemu_clock_get_ns(QEMU_CLOCK_REALTIME)) proved to be very expensive. We had an added overhead of 13% of the total run time. Therefore, we modified the algorithm and only take into account the difference between the 2 clocks at the begining of the cpu_exec function. During the for loop we try to reduce the advance of the guest only by computing the virtual time elapsed and sleeping if necessary. The overhead is thus reduced to 3%. Even though this method still has a noticeable overhead, it no longer is a bottleneck in trying to achieve a better guest frequency for which the guest clock is faster than the host one. As for the the alignement of the 2 clocks, with the first algorithm the guest clock was oscillating between -1 and 1ms compared to the host clock. Using the second algorithm we notice that the guest is 5ms behind the host, which is still acceptable for our use case. The tests where conducted using fio and stress. The host machine in an i5 CPU at 3.10GHz running Debian Jessie (kernel 3.12). The guest machine is an arm versatile-pb built with buildroot. Currently, on our test machine, the lowest icount we can achieve that is suitable for aligning the 2 clocks is 6. However, we observe that the IO tests (using fio) are slower than the cpu tests (using stress). Signed-off-by: Sebastian Tanase <sebastian.tanase@openwide.fr> Tested-by: Camille Bégué <camille.begue@openwide.fr> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2014-08-06icount: Add align option to icountSebastian Tanase
The align option is used for activating the align algorithm in order to synchronise the host clock and the guest clock. Signed-off-by: Sebastian Tanase <sebastian.tanase@openwide.fr> Tested-by: Camille Bégué <camille.begue@openwide.fr> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2014-08-06icount: Add QemuOpts for icountSebastian Tanase
Make icount parameter use QemuOpts style options in order to easily add other suboptions. Signed-off-by: Sebastian Tanase <sebastian.tanase@openwide.fr> Tested-by: Camille Bégué <camille.begue@openwide.fr> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2014-08-06icount: Fix virtual clock start value on ARMSebastian Tanase
When using the icount option on ARM, the virtual clock starts counting at realtime clock but it should start at 0. The reason why the virtual clock starts at realtime clock is because the first time we call qemu_clock_warp (which calls icount_warp_rt) in tcg_exec_all, qemu_icount_bias (which is part of the virtual time computation mechanism) will increment by realtime - vm_clock_warp_start, with vm_clock_warp_start being 0 (see icount_warp_rt in cpus.c). By changing the value of vm_clock_warp_start from 0 to -1, the first time we call qemu_clock_warp which calls icount_warp_rt, we will return immediatly because icount_warp_rt first checks if vm_clock_warp_start is -1 and if it's the case it returns. Therefore, qemu_icount_bias will first be incremented by the value of a virtual timer deadline when the virtual cpu goes from active to inactive. The virtual time will start at 0 and increment based on the instruction counter when the vcpu is active or the qemu_icount_bias value when inactive. Signed-off-by: Sebastian Tanase <sebastian.tanase@openwide.fr> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2014-08-06timer: add cpu_icount_to_ns function.KONRAD Frederic
This adds cpu_icount_to_ns function which is needed for reverse execution. It returns the time for a specific instruction. Signed-off-by: KONRAD Frederic <fred.konrad@greensocs.com> Reviewed-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2014-08-06migration: migrate icount fields.KONRAD Frederic
This fixes a bug where qemu_icount and qemu_icount_bias are not migrated. It adds a subsection "timer/icount" to vmstate_timers so icount is migrated only when needed. Signed-off-by: KONRAD Frederic <fred.konrad@greensocs.com> Reviewed-by: Amit Shah <amit.shah@redhat.com> Reviewed-by: Juan Quintela <quintela@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2014-08-06icount: put icount variables into TimerState.KONRAD Frederic
This puts qemu_icount and qemu_icount_bias into TimerState structure to allow them to be migrated. Signed-off-by: KONRAD Frederic <fred.konrad@greensocs.com> Reviewed-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2014-06-23qapi event: convert STOPWenchao Xia
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>
2014-06-23vl: allow other threads to do qemu_system_vmstop_requestPaolo Bonzini
There patch protects vmstop_requested with a lock and introduces qemu_system_vmstop_request_prepare. Together with the new call to qemu_vmstop_requested in vm_start, qemu_system_vmstop_request_prepare avoids a race where the VM could remain stopped even though the iostatus of a block device has already been set (for example). qemu_system_vmstop_request_prepare however also lets the caller thread delay observation of the state change until it has itself communicated that change to the user. This delay avoids any possibility of a wrong reordering of the BLOCK_IO_ERROR event and the subsequent STOP event. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2014-06-19NUMA: move numa related code to new file numa.cWanlong Gao
Signed-off-by: Wanlong Gao <gaowanlong@cn.fujitsu.com> Reviewed-by: Eduardo Habkost <ehabkost@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Hu Tao <hutao@cn.fujitsu.com> Signed-off-by: Blue Swirl <blauwirbel@gmail.com> Signed-off-by: Andre Przywara <andre.przywara@amd.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Acked-by: Michael S. Tsirkin <mst@redhat.com> MST: comment tweaks
2014-06-17qtest: fix qtest_clock_warp() for no deadline caseSergey Fedorov
Use dedicated qemu_soonest_timeout() instead of MIN(). Signed-off-by: Sergey Fedorov <serge.fdrv@gmail.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2014-05-14savevm: Remove all the unneeded version_minimum_id_old (rest)Juan Quintela
After previous Peter patch, they are redundant. This way we don't assign them except when needed. Once there, there were lots of case where the ".fields" indentation was wrong: .fields = (VMStateField []) { and .fields = (VMStateField []) { Change all the combinations to: .fields = (VMStateField[]){ The biggest problem (appart from aesthetics) was that checkpatch complained when we copy&pasted the code from one place to another. Signed-off-by: Juan Quintela <quintela@redhat.com> Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
2014-04-27misc: Use cpu_physical_memory_read and cpu_physical_memory_writeStefan Weil
These functions don't need type casts (as does cpu_physical_memory_rw) and also make the code better readable. Signed-off-by: Stefan Weil <sw@weilnetz.de> Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
2014-03-13cpu: Move icount_decr field from CPU_COMMON to CPUStateAndreas Färber
Signed-off-by: Andreas Färber <afaerber@suse.de>
2014-03-13cpu: Move icount_extra field from CPU_COMMON to CPUStateAndreas Färber
Reset it. Signed-off-by: Andreas Färber <afaerber@suse.de>
2014-03-13cpu: Move can_do_io field from CPU_COMMON to CPUStateAndreas Färber
Rename can_do_io() to cpu_can_do_io() and change argument to CPUState. Signed-off-by: Andreas Färber <afaerber@suse.de>
2014-03-13cpu: Turn cpu_has_work() into a CPUClass hookAndreas Färber
Default to false. Tidy variable naming and inline cast uses while at it. Tested-by: Jia Liu <proljc@gmail.com> (or32) Signed-off-by: Andreas Färber <afaerber@suse.de>
2014-03-09Add a 'name' parameter to qemu_thread_createDr. David Alan Gilbert
If enabled, set the thread name at creation (on GNU systems with pthread_set_np) Fix up all the callers with a thread name Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com> Acked-by: Michael S. Tsirkin <mst@redhat.com> Reviewed-by: Laszlo Ersek <lersek@redhat.com>
2014-02-11cpu: Add per-cpu address spaceEdgar E. Iglesias
Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
2013-12-23target-i386: Move apic_state field from CPUX86State to X86CPUChen Fan
This motion is preparing for refactoring vCPU APIC subsequently. Signed-off-by: Chen Fan <chen.fan.fnst@cn.fujitsu.com> Signed-off-by: Andreas Färber <afaerber@suse.de>
2013-11-06timers: fix stop/cont with -icountPaolo Bonzini
Stop/cont commands are broken with -icount due to a deadlock. The real problem is that the computation of timers_state.cpu_ticks_offset makes no sense with -icount enabled: we set it to an icount clock value in cpu_disable_ticks, and subtract a TSC (or similar, whatever cpu_get_real_ticks happens to return) value in cpu_enable_ticks. The fix is simple. timers_state.cpu_ticks_offset is only used together with cpu_get_real_ticks, so we can use cpu_get_real_ticks in cpu_disable_ticks. There is no need to update cpu_ticks_prev at the time cpu_disable_ticks is called; instead, we can do it the next time cpu_get_ticks is called. The change to cpu_disable_ticks is the important part of the patch. The rest modifies the code to always check timers_state.cpu_ticks_prev, even when the ticks are not advancing (i.e. the VM is stopped). It also makes a similar change to cpu_get_clock_locked, so that the code remains similar for cpu_get_ticks and cpu_get_clock_locked. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Message-id: 1382977938-13844-1-git-send-email-pbonzini@redhat.com Signed-off-by: Anthony Liguori <aliguori@amazon.com>
2013-10-25target-ppc: Check for error on address translation in memsave commandAneesh Kumar K.V
When we translate the virtual address to physical check for error. Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> Signed-off-by: Alexander Graf <agraf@suse.de>
2013-10-17icount: make it thread-safePaolo Bonzini
This lets threads other than the I/O thread use vm_clock even in -icount mode. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2013-10-17icount: document (future) locking rules for icountPaolo Bonzini
Reviewed-by: Alex Bligh <alex@alex.org.uk> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2013-10-17icount: prepare the code for future races in calling qemu_clock_warpPaolo Bonzini
Computing the deadline of all vm_clocks is somewhat expensive and calls out to qemu-timer.c; two reasons not to do it in the seqlock's write-side critical section. This however opens the door for races in setting and reading vm_clock_warp_start. To plug them, we need to cover the case where a new deadline slips in between the call to qemu_clock_deadline_ns_all and the actual modification of the icount_warp_timer. Restrict changes to vm_clock_warp_start and the icount_warp_timer's expiration time, to only move them back (which would simply cause an early wakeup). If a vm_clock timer is cancelled while CPUs are idle, this might cause the icount_warp_timer to fire unnecessarily. This is not a problem, after it fires the timer becomes inactive and the next call to timer_mod_anticipate will be precise. In addition to this, we must deactivate the icount_warp_timer _before_ checking whether CPUs are idle. This way, if the "last" CPU becomes idle during the call to timer_del we will still set up the icount_warp_timer. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2013-10-17icount: reorganize icount_warp_rtPaolo Bonzini
To prepare for future code changes, move the increment of qemu_icount_bias outside the "if" statement. Also, hoist outside the if the check for timers that expired due to the "warping". The check is redundant when !runstate_is_running(), but doing it this way helps because the code that increments qemu_icount_bias will be a critical section. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2013-10-17icount: use cpu_get_icount() directlyPaolo Bonzini
This will help later when we will have to place these calls in a critical section, and thus call a version of cpu_get_icount() that does not take the lock. Reviewed-by: Alex Bligh <alex@alex.org.uk> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2013-10-17timer: protect timers_state's clock with seqlockLiu Ping Fan
QEMU_CLOCK_VIRTUAL may be read outside BQL. This will make its foundation, i.e. cpu_clock_offset exposed to race condition. Using private lock to protect it. After this patch, reading QEMU_CLOCK_VIRTUAL is thread safe unless use_icount is true, in which case the existing callers still rely on the BQL. Lock rule: private lock innermost, ie BQL->"this lock" Signed-off-by: Liu Ping Fan <pingfank@linux.vnet.ibm.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2013-09-03cpu: Replace qemu_for_each_cpu()Andreas Färber
It was introduced to loop over CPUs from target-independent code, but since commit 182735efaf956ccab50b6d74a4fed163e0f35660 target-independent CPUState is used. A loop can be considered more efficient than function calls in a loop, and CPU_FOREACH() hides implementation details just as well, so use that instead. Suggested-by: Markus Armbruster <armbru@redhat.com> Acked-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Andreas Färber <afaerber@suse.de>
2013-09-03cpu: Use QTAILQ for CPU listAndreas Färber
Introduce CPU_FOREACH(), CPU_FOREACH_SAFE() and CPU_NEXT() shorthand macros. Signed-off-by: Andreas Färber <afaerber@suse.de>
2013-08-30s390: wire up nmi command to raise a RESTART interrupt on S390Eugene (jno) Dvurechenski
There is the 'nmi' command that is used to trigger a guest dump via kdump feature on x86. s390 uses RESTART interrupt to trigger kdump. So, this patch provides a mean to use 'nmi' command on s390 to raise RESTART interrupt. The CPU to receive the RESTART interrupt is the "default" one. There is an infrastructure to select the "default" CPU using 'cpu' command. The 'info cpus' command can be used to see which one is the "default". In order to wire up the RESTART to 'nmi' command we had to: 1. implement the kvm_s390_cpu_restart function by exporting the existing code 2. implement s390_cpu_restart function as kvm-aware wrapper 3. modify the qmp_inject_nmi function to enable (for s390) the scan for "default" CPU and call s390_cpu_restart for it; 3. fix some messages. Signed-off-by: Eugene (jno) Dvurechenski <jno@linux.vnet.ibm.com> Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com> Acked-by: Alexander Graf <agraf@suse.de>
2013-08-22aio / timers: Rearrange timer.h & make legacy functions call non-legacyAlex Bligh
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>
2013-08-22aio / timers: Use all timerlists in icount warp calculationsAlex Bligh
Notify all timerlists derived from vm_clock in icount warp calculations. When calculating timer delay based on vm_clock deadline, use all timerlists. For compatibility, maintain an apparent bug where when using icount, if no vm_clock timer was set, qemu_clock_deadline would return INT32_MAX and always set an icount clock expiry about 2 seconds ahead. NB: thread safety - when different timerlists sit on different threads, this will need some locking. Signed-off-by: Alex Bligh <alex@alex.org.uk> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2013-08-16cpus: Use cpu_is_stopped() efficientlyTiejun Chen
It makes more sense and will make things simpler later. Signed-off-by: Tiejun Chen <tiejun.chen@windriver.com> Signed-off-by: Andreas Färber <afaerber@suse.de>
generated by cgit v1.2.3 (git 2.26.2) at 2024-12-23 21:46:14 +0000