1 files changed, 220 insertions, 0 deletions

diff --git a/arch/x86/kvm/mmutrace.h b/arch/x86/kvm/mmutrace.h
new file mode 100644
index 000000000000..3e4a5c6ca2a9
--- /dev/null
+++ b/arch/x86/kvm/mmutrace.h
@@ -0,0 +1,220 @@
+#if !defined(_TRACE_KVMMMU_H) || defined(TRACE_HEADER_MULTI_READ)
+#define _TRACE_KVMMMU_H
+
+#include <linux/tracepoint.h>
+#include <linux/ftrace_event.h>
+
+#undef TRACE_SYSTEM
+#define TRACE_SYSTEM kvmmmu
+#define TRACE_INCLUDE_PATH .
+#define TRACE_INCLUDE_FILE mmutrace
+
+#define KVM_MMU_PAGE_FIELDS \
+        __field(__u64, gfn) \
+        __field(__u32, role) \
+        __field(__u32, root_count) \
+        __field(__u32, unsync)
+
+#define KVM_MMU_PAGE_ASSIGN(sp)                      \
+        __entry->gfn = sp->gfn;                      \
+        __entry->role = sp->role.word;               \
+        __entry->root_count = sp->root_count;        \
+        __entry->unsync = sp->unsync;
+
+#define KVM_MMU_PAGE_PRINTK() ({                                        \
+        const char *ret = p->buffer + p->len;                           \
+        static const char *access_str[] = {                             \
+                "---", "--x", "w--", "w-x", "-u-", "-ux", "wu-", "wux"  \
+        };                                                              \
+        union kvm_mmu_page_role role;                                   \
+                                                                        \
+        role.word = __entry->role;                                      \
+                                                                        \
+        trace_seq_printf(p, "sp gfn %llx %u/%u q%u%s %s%s %spge"        \
+                         " %snxe root %u %s%c",                         \
+                         __entry->gfn, role.level, role.glevels,        \
+                         role.quadrant,                                 \
+                         role.direct ? " direct" : "",                  \
+                         access_str[role.access],                       \
+                         role.invalid ? " invalid" : "",                \
+                         role.cr4_pge ? "" : "!",                       \
+                         role.nxe ? "" : "!",                           \
+                         __entry->root_count,                           \
+                         __entry->unsync ? "unsync" : "sync", 0);       \
+        ret;                                                            \
+                })
+
+#define kvm_mmu_trace_pferr_flags       \
+        { PFERR_PRESENT_MASK, "P" },    \
+        { PFERR_WRITE_MASK, "W" },      \
+        { PFERR_USER_MASK, "U" },       \
+        { PFERR_RSVD_MASK, "RSVD" },    \
+        { PFERR_FETCH_MASK, "F" }
+
+/*
+ * A pagetable walk has started
+ */
+TRACE_EVENT(
+        kvm_mmu_pagetable_walk,
+        TP_PROTO(u64 addr, int write_fault, int user_fault, int fetch_fault),
+        TP_ARGS(addr, write_fault, user_fault, fetch_fault),
+
+        TP_STRUCT__entry(
+                __field(__u64, addr)
+                __field(__u32, pferr)
+        ),
+
+        TP_fast_assign(
+                __entry->addr = addr;
+                __entry->pferr = (!!write_fault << 1) | (!!user_fault << 2)
+                                 | (!!fetch_fault << 4);
+        ),
+
+        TP_printk("addr %llx pferr %x %s", __entry->addr, __entry->pferr,
+                  __print_flags(__entry->pferr, "|", kvm_mmu_trace_pferr_flags))
+);
+
+
+/* We just walked a paging element */
+TRACE_EVENT(
+        kvm_mmu_paging_element,
+        TP_PROTO(u64 pte, int level),
+        TP_ARGS(pte, level),
+
+        TP_STRUCT__entry(
+                __field(__u64, pte)
+                __field(__u32, level)
+                ),
+
+        TP_fast_assign(
+                __entry->pte = pte;
+                __entry->level = level;
+                ),
+
+        TP_printk("pte %llx level %u", __entry->pte, __entry->level)
+);
+
+/* We set a pte accessed bit */
+TRACE_EVENT(
+        kvm_mmu_set_accessed_bit,
+        TP_PROTO(unsigned long table_gfn, unsigned index, unsigned size),
+        TP_ARGS(table_gfn, index, size),
+
+        TP_STRUCT__entry(
+                __field(__u64, gpa)
+                ),
+
+        TP_fast_assign(
+                __entry->gpa = ((u64)table_gfn << PAGE_SHIFT)
+                                + index * size;
+                ),
+
+        TP_printk("gpa %llx", __entry->gpa)
+);
+
+/* We set a pte dirty bit */
+TRACE_EVENT(
+        kvm_mmu_set_dirty_bit,
+        TP_PROTO(unsigned long table_gfn, unsigned index, unsigned size),
+        TP_ARGS(table_gfn, index, size),
+
+        TP_STRUCT__entry(
+                __field(__u64, gpa)
+                ),
+
+        TP_fast_assign(
+                __entry->gpa = ((u64)table_gfn << PAGE_SHIFT)
+                                + index * size;
+                ),
+
+        TP_printk("gpa %llx", __entry->gpa)
+);
+
+TRACE_EVENT(
+        kvm_mmu_walker_error,
+        TP_PROTO(u32 pferr),
+        TP_ARGS(pferr),
+
+        TP_STRUCT__entry(
+                __field(__u32, pferr)
+                ),
+
+        TP_fast_assign(
+                __entry->pferr = pferr;
+                ),
+
+        TP_printk("pferr %x %s", __entry->pferr,
+                  __print_flags(__entry->pferr, "|", kvm_mmu_trace_pferr_flags))
+);
+
+TRACE_EVENT(
+        kvm_mmu_get_page,
+        TP_PROTO(struct kvm_mmu_page *sp, bool created),
+        TP_ARGS(sp, created),
+
+        TP_STRUCT__entry(
+                KVM_MMU_PAGE_FIELDS
+                __field(bool, created)
+                ),
+
+        TP_fast_assign(
+                KVM_MMU_PAGE_ASSIGN(sp)
+                __entry->created = created;
+                ),
+
+        TP_printk("%s %s", KVM_MMU_PAGE_PRINTK(),
+                  __entry->created ? "new" : "existing")
+);
+
+TRACE_EVENT(
+        kvm_mmu_sync_page,
+        TP_PROTO(struct kvm_mmu_page *sp),
+        TP_ARGS(sp),
+
+        TP_STRUCT__entry(
+                KVM_MMU_PAGE_FIELDS
+                ),
+
+        TP_fast_assign(
+                KVM_MMU_PAGE_ASSIGN(sp)
+                ),
+
+        TP_printk("%s", KVM_MMU_PAGE_PRINTK())
+);
+
+TRACE_EVENT(
+        kvm_mmu_unsync_page,
+        TP_PROTO(struct kvm_mmu_page *sp),
+        TP_ARGS(sp),
+
+        TP_STRUCT__entry(
+                KVM_MMU_PAGE_FIELDS
+                ),
+
+        TP_fast_assign(
+                KVM_MMU_PAGE_ASSIGN(sp)
+                ),
+
+        TP_printk("%s", KVM_MMU_PAGE_PRINTK())
+);
+
+TRACE_EVENT(
+        kvm_mmu_zap_page,
+        TP_PROTO(struct kvm_mmu_page *sp),
+        TP_ARGS(sp),
+
+        TP_STRUCT__entry(
+                KVM_MMU_PAGE_FIELDS
+                ),
+
+        TP_fast_assign(
+                KVM_MMU_PAGE_ASSIGN(sp)
+                ),
+
+        TP_printk("%s", KVM_MMU_PAGE_PRINTK())
+);
+
+#endif /* _TRACE_KVMMMU_H */
+
+/* This part must be outside protection */
+#include <trace/define_trace.h>