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-rw-r--r--include/linux/kvm.h49
1 files changed, 48 insertions, 1 deletions
diff --git a/include/linux/kvm.h b/include/linux/kvm.h
index f04bb426618f..d302d63517e4 100644
--- a/include/linux/kvm.h
+++ b/include/linux/kvm.h
@@ -14,6 +14,12 @@
14 14
15#define KVM_API_VERSION 12 15#define KVM_API_VERSION 12
16 16
17/* for KVM_TRACE_ENABLE */
18struct kvm_user_trace_setup {
19 __u32 buf_size; /* sub_buffer size of each per-cpu */
20 __u32 buf_nr; /* the number of sub_buffers of each per-cpu */
21};
22
17/* for KVM_CREATE_MEMORY_REGION */ 23/* for KVM_CREATE_MEMORY_REGION */
18struct kvm_memory_region { 24struct kvm_memory_region {
19 __u32 slot; 25 __u32 slot;
@@ -242,6 +248,42 @@ struct kvm_s390_interrupt {
242 __u64 parm64; 248 __u64 parm64;
243}; 249};
244 250
251#define KVM_TRC_SHIFT 16
252/*
253 * kvm trace categories
254 */
255#define KVM_TRC_ENTRYEXIT (1 << KVM_TRC_SHIFT)
256#define KVM_TRC_HANDLER (1 << (KVM_TRC_SHIFT + 1)) /* only 12 bits */
257
258/*
259 * kvm trace action
260 */
261#define KVM_TRC_VMENTRY (KVM_TRC_ENTRYEXIT + 0x01)
262#define KVM_TRC_VMEXIT (KVM_TRC_ENTRYEXIT + 0x02)
263#define KVM_TRC_PAGE_FAULT (KVM_TRC_HANDLER + 0x01)
264
265#define KVM_TRC_HEAD_SIZE 12
266#define KVM_TRC_CYCLE_SIZE 8
267#define KVM_TRC_EXTRA_MAX 7
268
269/* This structure represents a single trace buffer record. */
270struct kvm_trace_rec {
271 __u32 event:28;
272 __u32 extra_u32:3;
273 __u32 cycle_in:1;
274 __u32 pid;
275 __u32 vcpu_id;
276 union {
277 struct {
278 __u32 cycle_lo, cycle_hi;
279 __u32 extra_u32[KVM_TRC_EXTRA_MAX];
280 } cycle;
281 struct {
282 __u32 extra_u32[KVM_TRC_EXTRA_MAX];
283 } nocycle;
284 } u;
285};
286
245#define KVMIO 0xAE 287#define KVMIO 0xAE
246 288
247/* 289/*
@@ -262,7 +304,12 @@ struct kvm_s390_interrupt {
262 */ 304 */
263#define KVM_GET_VCPU_MMAP_SIZE _IO(KVMIO, 0x04) /* in bytes */ 305#define KVM_GET_VCPU_MMAP_SIZE _IO(KVMIO, 0x04) /* in bytes */
264#define KVM_GET_SUPPORTED_CPUID _IOWR(KVMIO, 0x05, struct kvm_cpuid2) 306#define KVM_GET_SUPPORTED_CPUID _IOWR(KVMIO, 0x05, struct kvm_cpuid2)
265 307/*
308 * ioctls for kvm trace
309 */
310#define KVM_TRACE_ENABLE _IOW(KVMIO, 0x06, struct kvm_user_trace_setup)
311#define KVM_TRACE_PAUSE _IO(KVMIO, 0x07)
312#define KVM_TRACE_DISABLE _IO(KVMIO, 0x08)
266/* 313/*
267 * Extension capability list. 314 * Extension capability list.
268 */ 315 */