kybaaz/linux-xiaomi-chiron
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

KVM: x86: add KVM_HC_CLOCK_PAIRING hypercall

Browse source 
Add a hypercall to retrieve the host realtime clock and the TSC value
used to calculate that clock read.

Used to implement clock synchronization between host and guest.

Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Marcelo Tosatti 2017-01-24 15:09:39 -02:00 • committed by Paolo Bonzini
parent 6342c50ad1
commit 55dd00a73a
4 changed files with 112 additions and 0 deletions
Download patch file Download diff file Expand all files Collapse all files

2
include/uapi/linux/kvm_para.h
View file

@ -14,6 +14,7 @@
#define KVM_EFAULT EFAULT
#define KVM_E2BIG E2BIG
#define KVM_EPERM EPERM
#define KVM_EOPNOTSUPP 95
#define KVM_HC_VAPIC_POLL_IRQ 1
#define KVM_HC_MMU_OP 2
@ -23,6 +24,7 @@
#define KVM_HC_MIPS_GET_CLOCK_FREQ 6
#define KVM_HC_MIPS_EXIT_VM 7
#define KVM_HC_MIPS_CONSOLE_OUTPUT 8
#define KVM_HC_CLOCK_PAIRING 9
/*
* hypercalls use architecture specific