bwlp/qemu.git/target/i386/hyperv.h, branch spice_video_codecs

i386: move kvm accel files into kvm/

2020-12-16T19:06:52+00:00

Signed-off-by: Claudio Fontana Reviewed-by: Alex Bennée Reviewed-by: Richard Henderson Message-Id: <20201212155530.23098-2-cfontana@suse.de> Signed-off-by: Eduardo Habkost

hyperv: qom-ify SynIC

2018-10-19T11:44:14+00:00

Make Hyper-V SynIC a device which is attached as a child to a CPU. For now it only makes SynIC visibile in the qom hierarchy, and maintains its internal fields in sync with the respecitve msrs of the parent cpu (the fields will be used in followup patches). Signed-off-by: Roman Kagan Message-Id: <20180921082217.29481-3-rkagan@virtuozzo.com> Signed-off-by: Paolo Bonzini

i386: add hyperv-stub for CONFIG_HYPERV=n

2018-10-19T11:44:14+00:00

This will allow to build slightly leaner QEMU that supports some HyperV features of KVM (e.g. SynIC timers, PV spinlocks, APIC assists, etc.) but nothing else on the QEMU side. Signed-off-by: Roman Kagan Message-Id: <20180921082041.29380-6-rkagan@virtuozzo.com> Signed-off-by: Paolo Bonzini

hyperv: factor out arch-independent API into hw/hyperv

2018-10-19T11:44:13+00:00

A significant part of hyperv.c is not actually tied to x86, and can be moved to hw/. This will allow to maintain most of Hyper-V and VMBus target-independent, and to avoid conflicts with inclusion of arch-specific headers down the road in VMBus implementation. Also this stuff can now be opt-out with CONFIG_HYPERV. Signed-off-by: Roman Kagan Message-Id: <20180921082041.29380-4-rkagan@virtuozzo.com> Signed-off-by: Paolo Bonzini

hyperv: make hyperv_vp_index inline

2018-10-19T11:44:13+00:00

Also make the inverse function, hyperv_find_vcpu, static as it's not used outside hyperv.c This paves the way to making hyperv.c built optionally. Signed-off-by: Roman Kagan Message-Id: <20180921082041.29380-3-rkagan@virtuozzo.com> Signed-off-by: Paolo Bonzini

hyperv: rename kvm_hv_sint_route_set_sint

2018-10-19T11:44:13+00:00

There's nothing kvm-specific in it so follow the suite and replace "kvm_hv" prefix with "hyperv". Signed-off-by: Roman Kagan Message-Id: <20180921081836.29230-9-rkagan@virtuozzo.com> Signed-off-by: Paolo Bonzini

hyperv: make HvSintRoute reference-counted

2018-10-19T11:44:13+00:00

Multiple entities (e.g. VMBus devices) can use the same SINT route. To make their lives easier in maintaining SINT route ownership, make it reference-counted. Adjust the respective API names accordingly. Signed-off-by: Roman Kagan Message-Id: <20180921081836.29230-8-rkagan@virtuozzo.com> Signed-off-by: Paolo Bonzini

hyperv: allow passing arbitrary data to sint ack callback

2018-10-19T11:44:13+00:00

Make sint ack callback accept an opaque pointer, that is stored on sint_route at creation time. This allows for more convenient interaction with the callback. Besides, nothing outside hyperv.c should need to know the layout of HvSintRoute fields any more so its declaration can be removed from the header. Signed-off-by: Roman Kagan Message-Id: <20180921081836.29230-6-rkagan@virtuozzo.com> Signed-off-by: Paolo Bonzini

hyperv: ensure VP index equal to QEMU cpu_index

2018-07-16T14:58:16+00:00

Hyper-V identifies vCPUs by Virtual Processor (VP) index which can be queried by the guest via HV_X64_MSR_VP_INDEX msr. It is defined by the spec as a sequential number which can't exceed the maximum number of vCPUs per VM. It has to be owned by QEMU in order to preserve it across migration. However, the initial implementation in KVM didn't allow to set this msr, and KVM used its own notion of VP index. Fortunately, the way vCPUs are created in QEMU/KVM makes it likely that the KVM value is equal to QEMU cpu_index. So choose cpu_index as the value for vp_index, and push that to KVM on kernels that support setting the msr. On older ones that don't, query the kernel value and assert that it's in sync with QEMU. Besides, since handling errors from vCPU init at hotplug time is impossible, disable vCPU hotplug. This patch also introduces accessor functions to encapsulate the mapping between a vCPU and its vp_index. Signed-off-by: Roman Kagan Message-Id: <20180702134156.13404-3-rkagan@virtuozzo.com> Signed-off-by: Paolo Bonzini

hyperv: rename vcpu_id to vp_index

2018-07-16T14:58:16+00:00

In Hyper-V-related code, vCPUs are identified by their VP (virtual processor) index. Since it's customary for "vcpu_id" in QEMU to mean APIC id, rename the respective variables to "vp_index" to make the distinction clear. Signed-off-by: Roman Kagan Message-Id: <20180702134156.13404-2-rkagan@virtuozzo.com> Signed-off-by: Paolo Bonzini