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authorYunhong Jiang <yunhong.jiang@intel.com>2016-06-13 14:19:59 -0700
committerYunhong Jiang <yunhong.jiang@linux.intel.com>2016-07-18 08:07:29 -0700
commit09c7dd2e0b05c5bc2def37e525a98e6b344d56f5 (patch)
tree7f2969dfb2b258c21f9598136a239e56dd7b0c3e /kernel/arch/x86/include/asm
parentfd047d7c73bfddb06d19aa4ca182c5c0f72a3304 (diff)
kvm: vmx: hook preemption timer support
Hook the VMX preemption timer to the "hv timer" functionality added by the previous patch. This includes: checking if the feature is supported, if the feature is broken on the CPU, the hooks to setup/clean the VMX preemption timer, arming the timer on vmentry and handling the vmexit. A module parameter states if the VMX preemption timer should be utilized. Signed-off-by: Yunhong Jiang <yunhong.jiang@intel.com> [Move hv_deadline_tsc to struct vcpu_vmx, use -1 as the "unset" value. Put all VMX bits here. Enable it by default #yolo. - Paolo] Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Change-Id: Icb8e0b853eedce3d52c394e510fa14d2cdd432e9 upstream-status: backport Signed-off-by: Yunhong Jiang <yunhong.jiang@linux.intel.com>
Diffstat (limited to 'kernel/arch/x86/include/asm')
-rw-r--r--kernel/arch/x86/include/asm/kvm_host.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/kernel/arch/x86/include/asm/kvm_host.h b/kernel/arch/x86/include/asm/kvm_host.h
index 21637c9e9..fe68e836e 100644
--- a/kernel/arch/x86/include/asm/kvm_host.h
+++ b/kernel/arch/x86/include/asm/kvm_host.h
@@ -983,6 +983,8 @@ extern u32 kvm_max_guest_tsc_khz;
extern u8 kvm_tsc_scaling_ratio_frac_bits;
/* maximum allowed value of TSC scaling ratio */
extern u64 kvm_max_tsc_scaling_ratio;
+/* 1ull << kvm_tsc_scaling_ratio_frac_bits */
+extern u64 kvm_default_tsc_scaling_ratio;
enum emulation_result {
EMULATE_DONE, /* no further processing */