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authorSheng Yang <sheng.yang@intel.com>2008-01-28 05:10:22 +0800
committerAvi Kivity <avi@qumranet.com>2008-04-27 12:00:21 +0300
commit7837699fa6d7adf81f26ab73a5f6897ea1ab9d6a (patch)
tree37a89d5c10869a9ada59df75b49d685708661434 /include
parent4fcaa98267efc4d39ded9b0bc33c6b4a2f62fecd (diff)
KVM: In kernel PIT model
The patch moves the PIT model from userspace to kernel, and increases the timer accuracy greatly. [marcelo: make last_injected_time per-guest] Signed-off-by: Sheng Yang <sheng.yang@intel.com> Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com> Tested-and-Acked-by: Alex Davis <alex14641@yahoo.com> Signed-off-by: Avi Kivity <avi@qumranet.com>
Diffstat (limited to 'include')
-rw-r--r--include/asm-x86/kvm_host.h1
-rw-r--r--include/linux/kvm.h2
2 files changed, 3 insertions, 0 deletions
diff --git a/include/asm-x86/kvm_host.h b/include/asm-x86/kvm_host.h
index 49ced21e0290..26a313a09472 100644
--- a/include/asm-x86/kvm_host.h
+++ b/include/asm-x86/kvm_host.h
@@ -298,6 +298,7 @@ struct kvm_arch{
struct list_head active_mmu_pages;
struct kvm_pic *vpic;
struct kvm_ioapic *vioapic;
+ struct kvm_pit *vpit;
int round_robin_prev_vcpu;
unsigned int tss_addr;
diff --git a/include/linux/kvm.h b/include/linux/kvm.h
index e92e70324ea1..cefa9a2c7b89 100644
--- a/include/linux/kvm.h
+++ b/include/linux/kvm.h
@@ -236,6 +236,7 @@ struct kvm_vapic_addr {
#define KVM_CAP_CLOCKSOURCE 8
#define KVM_CAP_NR_VCPUS 9 /* returns max vcpus per vm */
#define KVM_CAP_NR_MEMSLOTS 10 /* returns max memory slots per vm */
+#define KVM_CAP_PIT 11
/*
* ioctls for VM fds
@@ -258,6 +259,7 @@ struct kvm_vapic_addr {
#define KVM_IRQ_LINE _IOW(KVMIO, 0x61, struct kvm_irq_level)
#define KVM_GET_IRQCHIP _IOWR(KVMIO, 0x62, struct kvm_irqchip)
#define KVM_SET_IRQCHIP _IOR(KVMIO, 0x63, struct kvm_irqchip)
+#define KVM_CREATE_PIT _IO(KVMIO, 0x64)
/*
* ioctls for vcpu fds