linux-stable.git/arch/x86/include/uapi/asm/hyperv.h, branch linux-4.7.y

drivers/hv: Move VMBus hypercall codes into Hyper-V UAPI header

2016-02-16T17:48:40+00:00

VMBus hypercall codes inside Hyper-V UAPI header will
be used by QEMU to implement VMBus host devices support.

Signed-off-by: Andrey Smetanin 
Acked-by: K. Y. Srinivasan 
Reviewed-by: Roman Kagan 
CC: Gleb Natapov 
CC: Paolo Bonzini 
CC: Joerg Roedel 
CC: "K. Y. Srinivasan" 
CC: Haiyang Zhang 
CC: Roman Kagan 
CC: Denis V. Lunev 
CC: qemu-devel@nongnu.org
[Do not rename the constant at the same time as moving it, as that
 would cause semantic conflicts with the Hyper-V tree. - Paolo]
Signed-off-by: Paolo Bonzini

kvm/x86: Rename Hyper-V long spin wait hypercall

2016-02-16T17:48:38+00:00

Rename HV_X64_HV_NOTIFY_LONG_SPIN_WAIT by HVCALL_NOTIFY_LONG_SPIN_WAIT,
so the name is more consistent with the other hypercalls.

Signed-off-by: Andrey Smetanin 
Reviewed-by: Roman Kagan 
CC: Gleb Natapov 
CC: Paolo Bonzini 
CC: Joerg Roedel 
CC: "K. Y. Srinivasan" 
CC: Haiyang Zhang 
CC: Roman Kagan 
CC: Denis V. Lunev 
CC: qemu-devel@nongnu.org
[Change name, Andrey used HV_X64_HCALL_NOTIFY_LONG_SPIN_WAIT. - Paolo]
Signed-off-by: Paolo Bonzini

kvm/x86: Hyper-V SynIC timers

2015-12-16T17:49:45+00:00

Per Hyper-V specification (and as required by Hyper-V-aware guests),
SynIC provides 4 per-vCPU timers.  Each timer is programmed via a pair
of MSRs, and signals expiration by delivering a special format message
to the configured SynIC message slot and triggering the corresponding
synthetic interrupt.

Note: as implemented by this patch, all periodic timers are "lazy"
(i.e. if the vCPU wasn't scheduled for more than the timer period the
timer events are lost), regardless of the corresponding configuration
MSR.  If deemed necessary, the "catch up" mode (the timer period is
shortened until the timer catches up) will be implemented later.

Changes v2:
* Use remainder to calculate periodic timer expiration time

Signed-off-by: Andrey Smetanin 
Reviewed-by: Roman Kagan 
CC: Gleb Natapov 
CC: Paolo Bonzini 
CC: "K. Y. Srinivasan" 
CC: Haiyang Zhang 
CC: Vitaly Kuznetsov 
CC: Roman Kagan 
CC: Denis V. Lunev 
CC: qemu-devel@nongnu.org
Signed-off-by: Paolo Bonzini

drivers/hv: Move struct hv_timer_message_payload into UAPI Hyper-V x86 header

2015-12-16T17:49:41+00:00

This struct is required for Hyper-V SynIC timers implementation inside KVM
and for upcoming Hyper-V VMBus support by userspace(QEMU). So place it into
Hyper-V UAPI header.

Signed-off-by: Andrey Smetanin 
CC: Gleb Natapov 
CC: Paolo Bonzini 
CC: "K. Y. Srinivasan" 
CC: Haiyang Zhang 
CC: Vitaly Kuznetsov 
CC: Roman Kagan 
CC: Denis V. Lunev 
CC: qemu-devel@nongnu.org
Signed-off-by: Paolo Bonzini

drivers/hv: Move struct hv_message into UAPI Hyper-V x86 header

2015-12-16T17:49:40+00:00

This struct is required for Hyper-V SynIC timers implementation inside KVM
and for upcoming Hyper-V VMBus support by userspace(QEMU). So place it into
Hyper-V UAPI header.

Signed-off-by: Andrey Smetanin 
Acked-by: K. Y. Srinivasan 
Reviewed-by: Roman Kagan 
CC: Gleb Natapov 
CC: Paolo Bonzini 
CC: "K. Y. Srinivasan" 
CC: Haiyang Zhang 
CC: Vitaly Kuznetsov 
CC: Roman Kagan 
CC: Denis V. Lunev 
CC: qemu-devel@nongnu.org
Signed-off-by: Paolo Bonzini

drivers/hv: Move HV_SYNIC_STIMER_COUNT into Hyper-V UAPI x86 header

2015-12-16T17:49:40+00:00

This constant is required for Hyper-V SynIC timers MSR's
support by userspace(QEMU).

Signed-off-by: Andrey Smetanin 
Acked-by: K. Y. Srinivasan 
Reviewed-by: Roman Kagan 
CC: Gleb Natapov 
CC: Paolo Bonzini 
CC: "K. Y. Srinivasan" 
CC: Haiyang Zhang 
CC: Vitaly Kuznetsov 
CC: Roman Kagan 
CC: Denis V. Lunev 
CC: qemu-devel@nongnu.org
Signed-off-by: Paolo Bonzini

drivers/hv: share Hyper-V SynIC constants with userspace

2015-11-04T15:24:33+00:00

Moved Hyper-V synic contants from guest Hyper-V drivers private
header into x86 arch uapi Hyper-V header.

Added Hyper-V synic msr's flags into x86 arch uapi Hyper-V header.

Signed-off-by: Andrey Smetanin 
Reviewed-by: Roman Kagan 
Signed-off-by: Denis V. Lunev 
CC: Vitaly Kuznetsov 
CC: "K. Y. Srinivasan" 
CC: Gleb Natapov 
CC: Paolo Bonzini 
Signed-off-by: Paolo Bonzini

kvm/x86: Hyper-V HV_X64_MSR_VP_RUNTIME support

2015-10-01T13:06:33+00:00

HV_X64_MSR_VP_RUNTIME msr used by guest to get
"the time the virtual processor consumes running guest code,
and the time the associated logical processor spends running
hypervisor code on behalf of that guest."

Calculation of this time is performed by task_cputime_adjusted()
for vcpu task.

Necessary to support loading of winhv.sys in guest, which in turn is
required to support Windows VMBus.

Signed-off-by: Andrey Smetanin 
Reviewed-by: Roman Kagan 
Signed-off-by: Denis V. Lunev 
CC: Paolo Bonzini 
CC: Gleb Natapov 
Signed-off-by: Paolo Bonzini

kvm/x86: Hyper-V HV_X64_MSR_RESET msr

2015-10-01T13:06:32+00:00

HV_X64_MSR_RESET msr is used by Hyper-V based Windows guest
to reset guest VM by hypervisor.

Necessary to support loading of winhv.sys in guest, which in turn is
required to support Windows VMBus.

Signed-off-by: Andrey Smetanin 
Reviewed-by: Roman Kagan 
Signed-off-by: Denis V. Lunev 
CC: Paolo Bonzini 
CC: Gleb Natapov 
Signed-off-by: Paolo Bonzini

Drivers: hv: vmbus: Implement a clocksource based on the TSC page

2015-08-05T18:44:29+00:00

The current Hyper-V clock source is based on the per-partition reference counter
and this counter is being accessed via s synthetic MSR - HV_X64_MSR_TIME_REF_COUNT.
Hyper-V has a more efficient way of computing the per-partition reference
counter value that does not involve reading a synthetic MSR. We implement
a time source based on this mechanism.

Tested-by: Vivek Yadav 
Signed-off-by: K. Y. Srinivasan 
Signed-off-by: Greg Kroah-Hartman