kvm: libkvm: Add interface for PIT save/restore supporting

From 6ff60b78c3280505d84d0dc2619e95a087b88458 Mon Sep 17 00:00:00 2001
From: Sheng Yang <[email protected]>
Date: Fri, 7 Mar 2008 19:03:52 +0800
Subject: [PATCH] kvm: libkvm: Add interface for PIT save/restore supporting

---
 libkvm/libkvm-x86.c |   30 ++++++++++++++++++++++++++++++
 libkvm/libkvm.h     |   26 ++++++++++++++++++++++++++
 2 files changed, 56 insertions(+), 0 deletions(-)

index d19d17f..d1809fd 100644
@@ -361,6 +361,36 @@ int kvm_set_lapic(kvm_context_t kvm, int vcpu, struct 

kvm_lapic_state *s)

#endif

+#ifdef KVM_CAP_PIT
+
+int kvm_get_pit(kvm_context_t kvm, struct kvm_pit_state *s) +{
+ int r;
+ if (!kvm->pit_in_kernel)
+ return 0;
+ r = ioctl(kvm->vm_fd, KVM_GET_PIT, s);
+ if (r == -1) {
+ r = -errno;
+ perror("kvm_get_pit");
+ }
+ return r;
+}
+
+int kvm_set_pit(kvm_context_t kvm, struct kvm_pit_state *s) +{
+ int r;
+ if (!kvm->pit_in_kernel)
+ return 0;
+ r = ioctl(kvm->vm_fd, KVM_SET_PIT, s);
+ if (r == -1) {
+ r = -errno;
+ perror("kvm_set_pit");
+ }
+ return r;
+}
+
+#endif
+
void kvm_show_code(kvm_context_t kvm, int vcpu)
{
#define CR0_PE_MASK (1ULL<<0)

index 395434c..4b40d2c 100644
@@ -525,8 +525,34 @@ int kvm_get_lapic(kvm_context_t kvm, int vcpu, struct 

kvm_lapic_state *s);
* \param s Local apic state of the specific virtual CPU
*/
int kvm_set_lapic(kvm_context_t kvm, int vcpu, struct kvm_lapic_state *s);
+
+#endif
+
#endif

+#ifdef KVM_CAP_PIT
+
+/*!
+ * \brief Get in kernel PIT of the virtual domain
+ *
+ * Save the PIT state.
+ *
+ * \param kvm Pointer to the current kvm_context
+ * \param s PIT state of the virtual domain
+ */
+int kvm_get_pit(kvm_context_t kvm, struct kvm_pit_state *s); +
+/*!
+ * \brief Set in kernel PIT of the virtual domain
+ *
+ * Restore the PIT state.
+ * Timer would be retriggerred after restored.
+ *
+ * \param kvm Pointer to the current kvm_context
+ * \param s PIT state of the virtual domain
+ */
+int kvm_set_pit(kvm_context_t kvm, struct kvm_pit_state *s); +
#endif

#ifdef KVM_CAP_VAPIC
--
debian.1.5.3.7.1-dirty

From 6ff60b78c3280505d84d0dc2619e95a087b88458 Mon Sep 17 00:00:00 2001
From: Sheng Yang <[email protected]>
Date: Fri, 7 Mar 2008 19:03:52 +0800
Subject: [PATCH] kvm: libkvm: Add interface for PIT save/restore supporting

---
 libkvm/libkvm-x86.c |   30 ++++++++++++++++++++++++++++++
 libkvm/libkvm.h     |   26 ++++++++++++++++++++++++++
 2 files changed, 56 insertions(+), 0 deletions(-)

index d19d17f..d1809fd 100644
@@ -361,6 +361,36 @@ int kvm_set_lapic(kvm_context_t kvm, int vcpu, struct kvm_lapic_state *s)
 
 #endif
 
+#ifdef KVM_CAP_PIT
+
+int kvm_get_pit(kvm_context_t kvm, struct kvm_pit_state *s)
+{
+	int r;
+	if (!kvm->pit_in_kernel)
+		return 0;
+	r = ioctl(kvm->vm_fd, KVM_GET_PIT, s);
+	if (r == -1) {
+		r = -errno;
+		perror("kvm_get_pit");
+	}
+	return r;
+}
+
+int kvm_set_pit(kvm_context_t kvm, struct kvm_pit_state *s)
+{
+	int r;
+	if (!kvm->pit_in_kernel)
+		return 0;
+	r = ioctl(kvm->vm_fd, KVM_SET_PIT, s);
+	if (r == -1) {
+		r = -errno;
+		perror("kvm_set_pit");
+	}
+	return r;
+}
+
+#endif
+
 void kvm_show_code(kvm_context_t kvm, int vcpu)
 {
 #define CR0_PE_MASK	(1ULL<<0)

index 395434c..4b40d2c 100644
@@ -525,8 +525,34 @@ int kvm_get_lapic(kvm_context_t kvm, int vcpu, struct kvm_lapic_state *s);
  * \param s Local apic state of the specific virtual CPU
  */
 int kvm_set_lapic(kvm_context_t kvm, int vcpu, struct kvm_lapic_state *s);
+
+#endif
+
 #endif
 
+#ifdef KVM_CAP_PIT
+
+/*!
+ * \brief Get in kernel PIT of the virtual domain
+ *
+ * Save the PIT state.
+ *
+ * \param kvm Pointer to the current kvm_context
+ * \param s PIT state of the virtual domain
+ */
+int kvm_get_pit(kvm_context_t kvm, struct kvm_pit_state *s);
+
+/*!
+ * \brief Set in kernel PIT of the virtual domain
+ *
+ * Restore the PIT state.
+ * Timer would be retriggerred after restored.
+ *
+ * \param kvm Pointer to the current kvm_context
+ * \param s PIT state of the virtual domain
+ */
+int kvm_set_pit(kvm_context_t kvm, struct kvm_pit_state *s);
+
 #endif
 
 #ifdef KVM_CAP_VAPIC

debian.1.5.3.7.1-dirty

-------------------------------------------------------------------------
This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2008.
http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/

_______________________________________________
kvm-devel mailing list
[email protected]
https://lists.sourceforge.net/lists/listinfo/kvm-devel