On 10/12/2015 04:42 PM, Eric Blake wrote:
On 10/09/2015 07:39 AM, Denis V. Lunev wrote:
From: Andrey Smetanin <asmeta...@virtuozzo.com>

A new vcpu exit is introduced to notify the userspace of the
changes in Hyper-V synic configuraion triggered by guest writing to the
Is 'synic' intended?  Is it short for something (if so, spelling it out
may help)?

+++ b/Documentation/virtual/kvm/api.txt
@@ -3331,6 +3331,12 @@ the userspace IOAPIC should process the EOI and 
retrigger the interrupt if
  it is still asserted.  Vector is the LAPIC interrupt vector for which the
  EOI was received.
+                struct kvm_hyperv_exit hyperv;
+Indicates that the VCPU's exits into userspace to process some tasks

+related with Hyper-V emulation. Currently used to synchronize modified
+Hyper-V synic state with userspace.
Again, is 'synic' intended?  Hmm, I see it throughout the patch, so it
looks intentional, but I keep trying to read it as a typo for 'sync'.

this is not a typo :)

this is an abbreviation for synthetic interrupt controller,
pls compare with this

./arch/x86/include/uapi/asm/hyperv.h: * Basic SynIC MSRs (HV_X64_MSR_SCONTROL through HV_X64_MSR_EOM

Though there is some sense in the question itself. I think
that it would be better to keep naming it SynIC as
in the original kernel code.

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