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authorAvi Kivity <avi@qumranet.com>2007-10-22 16:50:39 +0200
committerAvi Kivity <avi@qumranet.com>2008-01-30 18:01:20 +0200
commitb209749f528488c4c0d20a42c0fbcbf49e6933b3 (patch)
tree0e0a24225a5c6bca1c1986cc0daaf8753424cfe6 /include
parent565f1fbd9d2f766dcfed5db90b89ef80afe8b49a (diff)
KVM: local APIC TPR access reporting facility
Add a facility to report on accesses to the local apic tpr even if the local apic is emulated in the kernel. This is basically a hack that allows userspace to patch Windows which tends to bang on the tpr a lot. 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.h17
-rw-r--r--include/linux/kvm_host.h2
3 files changed, 19 insertions, 1 deletions
diff --git a/include/asm-x86/kvm_host.h b/include/asm-x86/kvm_host.h
index ced1bebabbc..6e649af08d1 100644
--- a/include/asm-x86/kvm_host.h
+++ b/include/asm-x86/kvm_host.h
@@ -211,6 +211,7 @@ struct kvm_vcpu_arch {
int mp_state;
int sipi_vector;
u64 ia32_misc_enable_msr;
+ bool tpr_access_reporting;
struct kvm_mmu mmu;
diff --git a/include/linux/kvm.h b/include/linux/kvm.h
index de9f28d96ce..850f5ef7663 100644
--- a/include/linux/kvm.h
+++ b/include/linux/kvm.h
@@ -72,6 +72,7 @@ struct kvm_irqchip {
#define KVM_EXIT_FAIL_ENTRY 9
#define KVM_EXIT_INTR 10
#define KVM_EXIT_SET_TPR 11
+#define KVM_EXIT_TPR_ACCESS 12
/* for KVM_RUN, returned by mmap(vcpu_fd, offset=0) */
struct kvm_run {
@@ -130,6 +131,12 @@ struct kvm_run {
__u32 longmode;
__u32 pad;
} hypercall;
+ /* KVM_EXIT_TPR_ACCESS */
+ struct {
+ __u64 rip;
+ __u32 is_write;
+ __u32 pad;
+ } tpr_access;
/* Fix the size of the union. */
char padding[256];
};
@@ -202,6 +209,13 @@ struct kvm_signal_mask {
__u8 sigset[0];
};
+/* for KVM_TPR_ACCESS_REPORTING */
+struct kvm_tpr_access_ctl {
+ __u32 enabled;
+ __u32 flags;
+ __u32 reserved[8];
+};
+
#define KVMIO 0xAE
/*
@@ -229,6 +243,7 @@ struct kvm_signal_mask {
#define KVM_CAP_USER_MEMORY 3
#define KVM_CAP_SET_TSS_ADDR 4
#define KVM_CAP_EXT_CPUID 5
+#define KVM_CAP_VAPIC 6
/*
* ioctls for VM fds
@@ -274,5 +289,7 @@ struct kvm_signal_mask {
#define KVM_SET_LAPIC _IOW(KVMIO, 0x8f, struct kvm_lapic_state)
#define KVM_SET_CPUID2 _IOW(KVMIO, 0x90, struct kvm_cpuid2)
#define KVM_GET_CPUID2 _IOWR(KVMIO, 0x91, struct kvm_cpuid2)
+/* Available with KVM_CAP_VAPIC */
+#define KVM_TPR_ACCESS_REPORTING _IOWR(KVMIO, 0x92, struct kvm_tpr_access_ctl)
#endif
diff --git a/include/linux/kvm_host.h b/include/linux/kvm_host.h
index 953b50aa0e6..9ff5904c507 100644
--- a/include/linux/kvm_host.h
+++ b/include/linux/kvm_host.h
@@ -35,7 +35,7 @@
* vcpu->requests bit members
*/
#define KVM_REQ_TLB_FLUSH 0
-
+#define KVM_REQ_REPORT_TPR_ACCESS 2
struct kvm_vcpu;
extern struct kmem_cache *kvm_vcpu_cache;