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* sev/i386: Don't allow a system reset under an SEV-ES guestTom Lendacky2021-02-161-0/+2
| | | | | | | | | | | | | | | | | | | | An SEV-ES guest does not allow register state to be altered once it has been measured. When an SEV-ES guest issues a reboot command, Qemu will reset the vCPU state and resume the guest. This will cause failures under SEV-ES. Prevent that from occuring by introducing an arch-specific callback that returns a boolean indicating whether vCPUs are resettable. Cc: Peter Maydell <peter.maydell@linaro.org> Cc: Aurelien Jarno <aurelien@aurel32.net> Cc: Jiaxun Yang <jiaxun.yang@flygoat.com> Cc: Aleksandar Rikalo <aleksandar.rikalo@syrmia.com> Cc: David Gibson <david@gibson.dropbear.id.au> Cc: David Hildenbrand <david@redhat.com> Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com> Signed-off-by: Tom Lendacky <thomas.lendacky@amd.com> Reviewed-by: Venu Busireddy <venu.busireddy@oracle.com> Message-Id: <1ac39c441b9a3e970e9556e1cc29d0a0814de6fd.1611682609.git.thomas.lendacky@amd.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
* accel: replace struct CpusAccel with AccelOpsClassClaudio Fontana2021-02-051-21/+5Star
| | | | | | | | | | | | | | | This will allow us to centralize the registration of the cpus.c module accelerator operations (in accel/accel-softmmu.c), and trigger it automatically using object hierarchy lookup from the new accel_init_interfaces() initialization step, depending just on which accelerators are available in the code. Rename all tcg-cpus.c, kvm-cpus.c, etc to tcg-accel-ops.c, kvm-accel-ops.c, etc, matching the object type names. Signed-off-by: Claudio Fontana <cfontana@suse.de> Message-Id: <20210204163931.7358-18-cfontana@suse.de> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
* accel: move qtest CpusAccel functions to a common locationJason Andryuk2020-10-241-0/+3
| | | | | | | | | | | Move and rename accel/qtest/qtest-cpus.c files to accel/dummy-cpus.c so it can be re-used by Xen. Signed-off-by: Jason Andryuk <jandryuk@gmail.com> Message-Id: <20201013140511.5681-3-jandryuk@gmail.com> Reviewed-by: Claudio Fontana <cfontana@suse.de> Acked-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Thomas Huth <thuth@redhat.com>
* cpus: add handle_interrupt to the CpusAccel interfaceClaudio Fontana2020-10-051-0/+2
| | | | | | | | | | | | | kvm: uses the generic handler qtest: uses the generic handler whpx: changed to use the generic handler (identical implementation) hax: changed to use the generic handler (identical implementation) hvf: changed to use the generic handler (identical implementation) tcg: adapt tcg-cpus to point to the tcg-specific handler Signed-off-by: Claudio Fontana <cfontana@suse.de> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
* cpus: prepare new CpusAccel cpu accelerator interfaceClaudio Fontana2020-10-051-0/+36
| | | | | | | | | | | | | | | The new interface starts unused, will start being used by the next patches. It provides methods for each accelerator to start a vcpu, kick a vcpu, synchronize state, get cpu virtual clock and elapsed ticks. In qemu_wait_io_event, make it clear that APC is used only for HAX on Windows. Signed-off-by: Claudio Fontana <cfontana@suse.de> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
* cpu-timers, icount: new modulesClaudio Fontana2020-10-051-11/+1Star
| | | | | | | | | | | | | | | | | | | | | | | | | | refactoring of cpus.c continues with cpu timer state extraction. cpu-timers: responsible for the softmmu cpu timers state, including cpu clocks and ticks. icount: counts the TCG instructions executed. As such it is specific to the TCG accelerator. Therefore, it is built only under CONFIG_TCG. One complication is due to qtest, which uses an icount field to warp time as part of qtest (qtest_clock_warp). In order to solve this problem, provide a separate counter for qtest. This requires fixing assumptions scattered in the code that qtest_enabled() implies icount_enabled(), checking each specific case. Signed-off-by: Claudio Fontana <cfontana@suse.de> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> [remove redundant initialization with qemu_spice_init] Reviewed-by: Alex Bennée <alex.bennee@linaro.org> [fix lingering calls to icount_get] Signed-off-by: Claudio Fontana <cfontana@suse.de> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
* tcg: convert "-accel threads" to a QOM propertyPaolo Bonzini2019-12-171-2/+0Star
| | | | | | | | | | Replace the ad-hoc qemu_tcg_configure with generic code invoking QOM property getters and setters. More properties (and thus more valid -accel suboptions) will be added in the next patches, which will move accelerator-related "-machine" options to accelerators. Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
* target: Simplify how the TARGET_cpu_list() printMarkus Armbruster2019-04-181-2/+1Star
| | | | | | | | | | | | | | | | | The various TARGET_cpu_list() take an fprintf()-like callback and a FILE * to pass to it. Their callers (vl.c's main() via list_cpus(), bsd-user/main.c's main(), linux-user/main.c's main()) all pass fprintf() and stdout. Thus, the flexibility provided by the (rather tiresome) indirection isn't actually used. Drop the callback, and call qemu_printf() instead. Calling printf() would also work, but would make the code unsuitable for monitor context without making it simpler. Signed-off-by: Markus Armbruster <armbru@redhat.com> Message-Id: <20190417191805.28198-10-armbru@redhat.com> Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
* tcg: Simplify how dump_drift_info() printsMarkus Armbruster2019-04-181-1/+1
| | | | | | | | | | | | | | | dump_drift_info() takes an fprintf()-like callback and a FILE * to pass to it. Its only caller hmp_info_jit() passes monitor_fprintf() and a Monitor * cast to FILE *. monitor_fprintf() casts it right back, and is otherwise identical to monitor_printf(). The type-punning is ugly. Drop the callback, and call qemu_printf() instead. Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com> Message-Id: <20190417191805.28198-6-armbru@redhat.com>
* include: Include fprintf-fn.h only where neededMarkus Armbruster2019-04-181-0/+1
| | | | | | Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com> Message-Id: <20190417191805.28198-2-armbru@redhat.com>
* migration: Mark CPU states dirty before incoming migration/loadvmDavid Gibson2017-06-061-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | As a rule, CPU internal state should never be updated when !cpu->kvm_vcpu_dirty (or the HAX equivalent). If that is done, then subsequent calls to cpu_synchronize_state() - usually safe and idempotent - will clobber state. However, we routinely do this during a loadvm or incoming migration. Usually this is called shortly after a reset, which will clear all the cpu dirty flags with cpu_synchronize_all_post_reset(). Nothing is expected to set the dirty flags again before the cpu state is loaded from the incoming stream. This means that it isn't safe to call cpu_synchronize_state() from a post_load handler, which is non-obvious and potentially inconvenient. We could cpu_synchronize_all_state() before the loadvm, but that would be overkill since a) we expect the state to already be synchronized from the reset and b) we expect to completely rewrite the state with a call to cpu_synchronize_all_post_init() at the end of qemu_loadvm_state(). To clear this up, this patch introduces cpu_synchronize_pre_loadvm() and associated helpers, which simply marks the cpu state as dirty without actually changing anything. i.e. it says we want to discard any existing KVM (or HAX) state and replace it with what we're going to load. Cc: Juan Quintela <quintela@redhat.com> Cc: Dave Gilbert <dgilbert@redhat.com> Signed-off-by: David Gibson <david@gibson.dropbear.id.au> Reviewed-by: Juan Quintela <quintela@redhat.com>
* cpus: define QEMUTimerListNotifyCB for QEMU system emulationPaolo Bonzini2017-03-141-0/+1
| | | | | | | | There is no change for now, because the callback just invokes qemu_notify_event. Reviewed-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
* qemu-timer: do not include sysemu/cpus.h from util/qemu-timer.hPaolo Bonzini2017-03-141-0/+2
| | | | | | | | | This dependency is the wrong way, and we will need util/qemu-timer.h from sysemu/cpus.h in the next patch. Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Reviewed-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
* tcg: add options for enabling MTTCGKONRAD Frederic2017-02-241-0/+2
| | | | | | | | | | | | | | We know there will be cases where MTTCG won't work until additional work is done in the front/back ends to support. It will however be useful to be able to turn it on. As a result MTTCG will default to off unless the combination is supported. However the user can turn it on for the sake of testing. Signed-off-by: KONRAD Frederic <fred.konrad@greensocs.com> [AJB: move to -accel tcg,thread=multi|single, defaults] Signed-off-by: Alex Bennée <alex.bennee@linaro.org> Reviewed-by: Richard Henderson <rth@twiddle.net>
* linux-user: remove #define smp_{cores, threads}Marc-André Lureau2016-09-271-4/+1Star
| | | | | | | | | | Those are unneeded now that CPUState nr_{cores,threads} is always initialized. Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com> Reviewed-by: Eduardo Habkost <ehabkost@redhat.com> Acked-by: David Gibson <david@gibson.dropbear.id.au> Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
* include: move CPU-related definitions out of qemu-common.hPaolo Bonzini2016-05-191-0/+13
| | | | | Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
* Revert "Introduce cpu_clean_all_dirty"Liang Li2015-11-051-1/+0Star
| | | | | | | | | | | | | This reverts commit de9d61e83d43be9069e6646fa9d57a3f47779d28. Now 'cpu_clean_all_dirty' is useless, we can revert the related code. Conflicts: include/sysemu/kvm.h Signed-off-by: Liang Li <liang.z.li@intel.com> Message-Id: <1446695464-27116-3-git-send-email-liang.z.li@intel.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
* exec: remove non-TCG stuff from exec-all.h header.Paolo Bonzini2015-10-121-0/+1
| | | | | | | | The header is included from basically everywhere, thanks to cpu.h. It should be moved to the (TCG only) files that actually need it. As a start, remove non-TCG stuff. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
* Introduce cpu_clean_all_dirtyMarcelo Tosatti2014-09-161-0/+1
| | | | | | | | | 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>
* NUMA: move numa related code to new file numa.cWanlong Gao2014-06-191-1/+0Star
| | | | | | | | | | | | | 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
* cpus.c: Drop unnecessary set_cpu_log()Peter Maydell2013-02-161-1/+0Star
| | | | | | | | | | | The set_cpu_log() function in cpus.c is a fairly simple wrapper which is only called from one location. Just inline the code into vl.c, since there is no need to indirect it via cpus.c and the handling of the error case is more appropriate to vl.c. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Andreas Färber <afaerber@suse.de> Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
* qemu-log: Unify {cpu_set,set_cpu}_log_filename as qemu_set_log_filenamePeter Maydell2013-02-161-1/+0Star
| | | | | | | | | | The qemu_log() functionality is no longer specific to TCG CPU debug logs. Rename cpu_set_log_filename() to qemu_set_log_filename() and drop the pointless wrapper set_cpu_log_filename(). Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Andreas Färber <afaerber@suse.de> Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
* cpus.h: Make constant smp_cores/smp_threads available on *-userEduardo Habkost2013-01-271-0/+7
| | | | | | | | The code that calculates the APIC ID will use smp_cores/smp_threads, so just define them as 1 on *-user to avoid #ifdefs in the code. Signed-off-by: Eduardo Habkost <ehabkost@redhat.com> Signed-off-by: Andreas Färber <afaerber@suse.de>
* softmmu: move include files to include/sysemu/Paolo Bonzini2012-12-191-0/+24
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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