From 79f06bc838534fc916f9ca90f89b7778b8e64dfe Mon Sep 17 00:00:00 2001
From: Sheng Yang <[EMAIL PROTECTED]>
Date: Tue, 4 Mar 2008 09:42:27 +0800
Subject: [PATCH] kvm: libkvm: Add interface for PIT save/restore supporting
Signed-off-by: Sheng Yang <[EMAIL PROTECTED]>
---
libkvm/libkvm-x86.c | 30 ++++++++++++++++++++++++++++++
libkvm/libkvm.h | 26 ++++++++++++++++++++++++++
2 files changed, 56 insertions(+), 0 deletions(-)
diff --git a/libkvm/libkvm-x86.c b/libkvm/libkvm-x86.c
index 22a6283..1d56273 100644
--- a/libkvm/libkvm-x86.c
+++ b/libkvm/libkvm-x86.c
@@ -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)
diff --git a/libkvm/libkvm.h b/libkvm/libkvm.h
index 395434c..4b40d2c 100644
--- a/libkvm/libkvm.h
+++ b/libkvm/libkvm.h
@@ -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 79f06bc838534fc916f9ca90f89b7778b8e64dfe Mon Sep 17 00:00:00 2001
From: Sheng Yang <[EMAIL PROTECTED]>
Date: Tue, 4 Mar 2008 09:42:27 +0800
Subject: [PATCH] kvm: libkvm: Add interface for PIT save/restore supporting
Signed-off-by: Sheng Yang <[EMAIL PROTECTED]>
---
libkvm/libkvm-x86.c | 30 ++++++++++++++++++++++++++++++
libkvm/libkvm.h | 26 ++++++++++++++++++++++++++
2 files changed, 56 insertions(+), 0 deletions(-)
diff --git a/libkvm/libkvm-x86.c b/libkvm/libkvm-x86.c
index 22a6283..1d56273 100644
--- a/libkvm/libkvm-x86.c
+++ b/libkvm/libkvm-x86.c
@@ -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)
diff --git a/libkvm/libkvm.h b/libkvm/libkvm.h
index 395434c..4b40d2c 100644
--- a/libkvm/libkvm.h
+++ b/libkvm/libkvm.h
@@ -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
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