This patch introduces the include files for kvm clock.
They'll be needed for both guest and host part.
Signed-off-by: Glauber de Oliveira Costa <[email protected]>
---
include/asm-x86/kvm_para.h | 23 +++++++++++++++++++++++
include/linux/kvm.h | 1 +
include/linux/kvm_para.h | 20 ++++++++++++++++++++
3 files changed, 44 insertions(+), 0 deletions(-)
diff --git a/include/asm-x86/kvm_para.h b/include/asm-x86/kvm_para.h
index c6f3fd8..af9fb75 100644
--- a/include/asm-x86/kvm_para.h
+++ b/include/asm-x86/kvm_para.h
@@ -10,15 +10,38 @@
* paravirtualization, the appropriate feature bit should be checked.
*/
#define KVM_CPUID_FEATURES 0x40000001
+#define KVM_FEATURE_CLOCKEVENTS 0
+#define KVM_FEATURE_CLOCKSOURCE 1
+
#ifdef __KERNEL__
#include <asm/processor.h>
+extern void kvmclock_init(void);
+
+union kvm_hv_clock {
+ struct {
+ u64 tsc_mult;
+ u64 now_ns;
+ /* That's the wall clock, not the water closet */
+ u64 wc_sec;
+ u64 wc_nsec;
+ u64 last_tsc;
+ /* At first, we could use the tsc value as a marker, but Jeremy
+ * well noted that it will cause us locking problems in 32-bit
+ * sys, so we have a special version field */
+ u32 version;
+ };
+ char page_align[PAGE_SIZE];
+};
+
/* This instruction is vmcall. On non-VT architectures, it will generate a
* trap that we will then rewrite to the appropriate instruction.
*/
#define KVM_HYPERCALL ".byte 0x0f,0x01,0xc1"
+#define KVM_HCALL_REGISTER_CLOCK 1
+
/* For KVM hypercalls, a three-byte sequence of either the vmrun or the vmmrun
* instruction. The hypervisor may replace it with something else but only the
* instructions are guaranteed to be supported.
diff --git a/include/linux/kvm.h b/include/linux/kvm.h
index 71d33d6..7ac8786 100644
--- a/include/linux/kvm.h
+++ b/include/linux/kvm.h
@@ -359,6 +359,7 @@ struct kvm_signal_mask {
#define KVM_CAP_MMU_SHADOW_CACHE_CONTROL 2
#define KVM_CAP_USER_MEMORY 3
#define KVM_CAP_SET_TSS_ADDR 4
+#define KVM_CAP_CLK 5
/*
* ioctls for VM fds
diff --git a/include/linux/kvm_para.h b/include/linux/kvm_para.h
index e4db25f..567a192 100644
--- a/include/linux/kvm_para.h
+++ b/include/linux/kvm_para.h
@@ -11,8 +11,28 @@
/* Return values for hypercalls */
#define KVM_ENOSYS 1000
+#define KVM_ENODEV 1019
+#define KVM_EINVAL 1022
#ifdef __KERNEL__
+#define KVM_HCALL_REGISTER_CLOCK 1
+
+union kvm_hv_clock {
+ struct {
+ u64 tsc_mult;
+ u64 now_ns;
+ /* That's the wall clock, not the water closet */
+ u64 wc_sec;
+ u64 wc_nsec;
+ u64 last_tsc;
+ /* At first, we could use the tsc value as a marker, but Jeremy
+ * well noted that it will cause us locking problems in 32-bit
+ * sys, so we have a special version field */
+ u32 version;
+ };
+ char page_align[PAGE_SIZE];
+};
+
/*
* hypercalls use architecture specific
*/
--
1.5.0.6
-
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