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| author | Andrey Smetanin <asmetanin@virtuozzo.com> | 2015-11-25 18:21:25 +0300 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2015-12-17 15:24:35 +0100 |
| commit | ff99aa64b13ea85ee35ec09c3fe720ad8bc83154 (patch) | |
| tree | cf5f66f439ee9b0515288cfe76a1d6814b280563 /target-i386/machine.c | |
| parent | b67dbb70703bbb156dccc654550b6ece27920490 (diff) | |
| download | focaccia-qemu-ff99aa64b13ea85ee35ec09c3fe720ad8bc83154.tar.gz focaccia-qemu-ff99aa64b13ea85ee35ec09c3fe720ad8bc83154.zip | |
target-i386/kvm: Hyper-V SynIC timers MSR's support
Hyper-V SynIC timers are host timers that are configurable by guest through corresponding MSR's (HV_X64_MSR_STIMER*). Guest setup and use fired by host events(SynIC interrupt and appropriate timer expiration message) as guest clock events. The state of Hyper-V SynIC timers are stored in corresponding MSR's. This patch seria implements such MSR's support and migration. Signed-off-by: Andrey Smetanin <asmetanin@virtuozzo.com> CC: Paolo Bonzini <pbonzini@redhat.com> CC: Richard Henderson <rth@twiddle.net> CC: Eduardo Habkost <ehabkost@redhat.com> CC: "Andreas Färber" <afaerber@suse.de> CC: Marcelo Tosatti <mtosatti@redhat.com> CC: Denis V. Lunev <den@openvz.org> CC: Roman Kagan <rkagan@virtuozzo.com> CC: kvm@vger.kernel.org Message-Id: <1448464885-8300-3-git-send-email-asmetanin@virtuozzo.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'target-i386/machine.c')
| -rw-r--r-- | target-i386/machine.c | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/target-i386/machine.c b/target-i386/machine.c index d41e286ba4..6126d96d7f 100644 --- a/target-i386/machine.c +++ b/target-i386/machine.c @@ -746,6 +746,34 @@ static const VMStateDescription vmstate_msr_hyperv_synic = { } }; +static bool hyperv_stimer_enable_needed(void *opaque) +{ + X86CPU *cpu = opaque; + CPUX86State *env = &cpu->env; + int i; + + for (i = 0; i < ARRAY_SIZE(env->msr_hv_stimer_config); i++) { + if (env->msr_hv_stimer_config[i] || env->msr_hv_stimer_count[i]) { + return true; + } + } + return false; +} + +static const VMStateDescription vmstate_msr_hyperv_stimer = { + .name = "cpu/msr_hyperv_stimer", + .version_id = 1, + .minimum_version_id = 1, + .needed = hyperv_stimer_enable_needed, + .fields = (VMStateField[]) { + VMSTATE_UINT64_ARRAY(env.msr_hv_stimer_config, + X86CPU, HV_SYNIC_STIMER_COUNT), + VMSTATE_UINT64_ARRAY(env.msr_hv_stimer_count, + X86CPU, HV_SYNIC_STIMER_COUNT), + VMSTATE_END_OF_LIST() + } +}; + static bool avx512_needed(void *opaque) { X86CPU *cpu = opaque; @@ -930,6 +958,7 @@ VMStateDescription vmstate_x86_cpu = { &vmstate_msr_hyperv_crash, &vmstate_msr_hyperv_runtime, &vmstate_msr_hyperv_synic, + &vmstate_msr_hyperv_stimer, &vmstate_avx512, &vmstate_xss, NULL |