diff options
| author | Andrey Smetanin <asmetanin@virtuozzo.com> | 2015-09-09 14:41:30 +0200 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2015-09-16 17:33:32 +0200 |
| commit | f2a53c9e05a24352a0f9740db0539ce5aeed22ca (patch) | |
| tree | 7d82245665da9ccae031a25b8d76a5d974440916 /target-i386/machine.c | |
| parent | 7c207b90465bc16a39b9fb8d9194f161059f69bf (diff) | |
i386/kvm: Hyper-v crash msrs set/get'ers and migration
KVM Hyper-V based guests can notify hypervisor about
occurred guest crash by writing into Hyper-V crash MSR's.
This patch does handling and migration of HV_X64_MSR_CRASH_P0-P4,
HV_X64_MSR_CRASH_CTL msrs. User can enable these MSR's by
'hv-crash' option.
Signed-off-by: Andrey Smetanin <asmetanin@virtuozzo.com>
Signed-off-by: Denis V. Lunev <den@openvz.org>
CC: Paolo Bonzini <pbonzini@redhat.com>
CC: Andreas Färber <afaerber@suse.de>
Message-Id: <1435924905-8926-13-git-send-email-den@openvz.org>
[Folks, stop abrviating variable names!!! Also fix compilation on
non-Linux/x86. - Paolo]
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'target-i386/machine.c')
| -rw-r--r-- | target-i386/machine.c | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/target-i386/machine.c b/target-i386/machine.c index a0df64b577..9fa056341a 100644 --- a/target-i386/machine.c +++ b/target-i386/machine.c @@ -661,6 +661,32 @@ static const VMStateDescription vmstate_msr_hyperv_time = { } }; +static bool hyperv_crash_enable_needed(void *opaque) +{ + X86CPU *cpu = opaque; + CPUX86State *env = &cpu->env; + int i; + + for (i = 0; i < HV_X64_MSR_CRASH_PARAMS; i++) { + if (env->msr_hv_crash_params[i]) { + return true; + } + } + return false; +} + +static const VMStateDescription vmstate_msr_hyperv_crash = { + .name = "cpu/msr_hyperv_crash", + .version_id = 1, + .minimum_version_id = 1, + .needed = hyperv_crash_enable_needed, + .fields = (VMStateField[]) { + VMSTATE_UINT64_ARRAY(env.msr_hv_crash_params, + X86CPU, HV_X64_MSR_CRASH_PARAMS), + VMSTATE_END_OF_LIST() + } +}; + static bool avx512_needed(void *opaque) { X86CPU *cpu = opaque; @@ -842,6 +868,7 @@ VMStateDescription vmstate_x86_cpu = { &vmstate_msr_hypercall_hypercall, &vmstate_msr_hyperv_vapic, &vmstate_msr_hyperv_time, + &vmstate_msr_hyperv_crash, &vmstate_avx512, &vmstate_xss, NULL |