KVM: x86: Add a common TSC scaling function
authorHaozhong Zhang <haozhong.zhang@intel.com>
Tue, 20 Oct 2015 07:39:03 +0000 (15:39 +0800)
committerPaolo Bonzini <pbonzini@redhat.com>
Tue, 10 Nov 2015 11:06:15 +0000 (12:06 +0100)
commit35181e86df97e4223f4a28fb33e2bcf3b73de141
treee7df6020aaf6649eb287aa5c75f3e6cc324d9347
parentad721883e9c5f46cc5fa9496bc12c097c6238b4a
KVM: x86: Add a common TSC scaling function

VMX and SVM calculate the TSC scaling ratio in a similar logic, so this
patch generalizes it to a common TSC scaling function.

Signed-off-by: Haozhong Zhang <haozhong.zhang@intel.com>
[Inline the multiplication and shift steps into mul_u64_u64_shr.  Remove
 BUG_ON.  - Paolo]
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
arch/x86/include/asm/kvm_host.h
arch/x86/kvm/svm.c
arch/x86/kvm/x86.c
include/linux/kvm_host.h
include/linux/math64.h