David Woodhouse 30b5c851af KVM: x86/xen: Add support for vCPU runstate information ... This is how Xen guests do steal time accounting. The hypervisor records the amount of time spent in each of running/runnable/blocked/offline states. In the Xen accounting, a vCPU is still in state RUNSTATE_running while in Xen for a hypercall or I/O trap, etc. Only if Xen explicitly schedules does the state become RUNSTATE_blocked. In KVM this means that even when the vCPU exits the kvm_run loop, the state remains RUNSTATE_running. The VMM can explicitly set the vCPU to RUNSTATE_blocked by using the KVM_XEN_VCPU_ATTR_TYPE_RUNSTATE_CURRENT attribute, and can also use KVM_XEN_VCPU_ATTR_TYPE_RUNSTATE_ADJUST to retrospectively add a given amount of time to the blocked state and subtract it from the running state. The state_entry_time corresponds to get_kvmclock_ns() at the time the vCPU entered the current state, and the total times of all four states should always add up to state_entry_time. Co-developed-by: Joao Martins <joao.m.martins@oracle.com> Signed-off-by: Joao Martins <joao.m.martins@oracle.com> Signed-off-by: David Woodhouse <dwmw@amazon.co.uk> Message-Id: <20210301125309.874953-2-dwmw2@infradead.org> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>		2021-03-02 14:30:54 -05:00
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aarch64	KVM: arm64: selftests: Filter out DEMUX registers	2020-11-27 19:46:47 +00:00
include	KVM: selftests: Add missing header file needed by xAPIC IPI tests	2021-02-11 08:02:08 -05:00
lib	selftests: kvm: Mmap the entire vcpu mmap area	2021-03-02 14:30:53 -05:00
s390x	KVM: selftests: sync_regs test for diag318	2020-12-10 13:36:05 +01:00
x86_64	KVM: x86/xen: Add support for vCPU runstate information	2021-03-02 14:30:54 -05:00
.gitignore	selftests: kvm: add hardware_disable test	2021-02-15 11:42:36 -05:00
config	selftests: kvm: Adding config fragments	2019-08-09 16:52:38 +02:00
demand_paging_test.c	KVM: selftests: Add backing src parameter to dirty_log_perf_test	2021-02-04 05:27:19 -05:00
dirty_log_perf_test.c	KVM: selftests: Disable dirty logging with vCPUs running	2021-02-04 05:27:20 -05:00
dirty_log_test.c	KVM: selftests: Factor out guest mode code	2021-01-07 18:07:29 -05:00
hardware_disable_test.c	selftests: kvm: add hardware_disable test	2021-02-15 11:42:36 -05:00
kvm_create_max_vcpus.c	KVM: selftests: Convert some printf's to pr_info's	2020-03-16 17:57:07 +01:00
Makefile	selftests: kvm: add hardware_disable test	2021-02-15 11:42:36 -05:00
memslot_modification_stress_test.c	KVM: selftests: Add backing src parameter to dirty_log_perf_test	2021-02-04 05:27:19 -05:00
set_memory_region_test.c	Merge branch 'kvm-master' into kvm-next	2021-01-07 18:06:52 -05:00
settings	selftests: kvm: Raise the default timeout to 120 seconds	2021-02-09 08:17:08 -05:00
steal_time.c	KVM: selftests: Rework timespec functions and usage	2020-03-18 14:08:56 +01:00