diff options
| author | Marcelo Tosatti <mtosatti@redhat.com> | 2019-06-03 20:04:08 -0300 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2019-08-20 17:26:17 +0200 |
| commit | d645e1328726b38b3c79525eb57842ce29c1df7c (patch) | |
| tree | d94444364f9c8029358e81fa2a32f05de32c128e /target/i386/machine.c | |
| parent | 17dc57990320edaad52ac9ea808be9719c91cea6 (diff) | |
kvm: i386: halt poll control MSR support
Add support for halt poll control MSR: save/restore, migration
and new feature name.
The purpose of this MSR is to allow the guest to disable
host halt poll.
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
Message-Id: <20190603230408.GA7938@amt.cnet>
[Do not enable by default, as pointed out by Mark Kanda. - Paolo]
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'target/i386/machine.c')
| -rw-r--r-- | target/i386/machine.c | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/target/i386/machine.c b/target/i386/machine.c index ce55755f0f..2767b3096d 100644 --- a/target/i386/machine.c +++ b/target/i386/machine.c @@ -437,6 +437,14 @@ static const VMStateDescription vmstate_exception_info = { } }; +/* Poll control MSR enabled by default */ +static bool poll_control_msr_needed(void *opaque) +{ + X86CPU *cpu = opaque; + + return cpu->env.poll_control_msr != 1; +} + static const VMStateDescription vmstate_steal_time_msr = { .name = "cpu/steal_time_msr", .version_id = 1, @@ -470,6 +478,17 @@ static const VMStateDescription vmstate_pv_eoi_msr = { } }; +static const VMStateDescription vmstate_poll_control_msr = { + .name = "cpu/poll_control_msr", + .version_id = 1, + .minimum_version_id = 1, + .needed = poll_control_msr_needed, + .fields = (VMStateField[]) { + VMSTATE_UINT64(env.poll_control_msr, X86CPU), + VMSTATE_END_OF_LIST() + } +}; + static bool fpop_ip_dp_needed(void *opaque) { X86CPU *cpu = opaque; @@ -1354,6 +1373,7 @@ VMStateDescription vmstate_x86_cpu = { &vmstate_async_pf_msr, &vmstate_pv_eoi_msr, &vmstate_steal_time_msr, + &vmstate_poll_control_msr, &vmstate_fpop_ip_dp, &vmstate_msr_tsc_adjust, &vmstate_msr_tscdeadline, |