diff options
| author | Liam Merwick <liam.merwick@oracle.com> | 2025-06-09 09:11:20 +0000 |
|---|---|---|
| committer | Sean Christopherson <seanjc@google.com> | 2025-06-20 13:55:12 -0700 |
| commit | 741e595f02fe4386914b7ef656a06f7209480ca9 (patch) | |
| tree | 70cd10953518865a757ca98379353403123e76ef | |
| parent | 28224ef02b56fceee2c161fe2a49a0bb197e44f5 (diff) | |
KVM: Add trace_kvm_vm_set_mem_attributes()
Add a tracing function that, for a guest memory range, displays
the start and end addresses plus the per-page attributes being set.
Signed-off-by: Liam Merwick <liam.merwick@oracle.com>
Reviewed-by: Pankaj Gupta <pankaj.gupta@amd.com>
Link: https://lore.kernel.org/r/20250609091121.2497429-3-liam.merwick@oracle.com
Signed-off-by: Sean Christopherson <seanjc@google.com>
| -rw-r--r-- | include/trace/events/kvm.h | 27 | ||||
| -rw-r--r-- | virt/kvm/kvm_main.c | 2 |
2 files changed, 29 insertions, 0 deletions
diff --git a/include/trace/events/kvm.h b/include/trace/events/kvm.h index fc7d0f8ff078..40b20d682d47 100644 --- a/include/trace/events/kvm.h +++ b/include/trace/events/kvm.h @@ -473,6 +473,33 @@ TRACE_EVENT(kvm_dirty_ring_exit, TP_printk("vcpu %d", __entry->vcpu_id) ); +#ifdef CONFIG_KVM_GENERIC_MEMORY_ATTRIBUTES +/* + * @start: Starting address of guest memory range + * @end: End address of guest memory range + * @attr: The value of the attribute being set. + */ +TRACE_EVENT(kvm_vm_set_mem_attributes, + TP_PROTO(gfn_t start, gfn_t end, unsigned long attr), + TP_ARGS(start, end, attr), + + TP_STRUCT__entry( + __field(gfn_t, start) + __field(gfn_t, end) + __field(unsigned long, attr) + ), + + TP_fast_assign( + __entry->start = start; + __entry->end = end; + __entry->attr = attr; + ), + + TP_printk("%#016llx -- %#016llx [0x%lx]", + __entry->start, __entry->end, __entry->attr) +); +#endif /* CONFIG_KVM_GENERIC_MEMORY_ATTRIBUTES */ + TRACE_EVENT(kvm_unmap_hva_range, TP_PROTO(unsigned long start, unsigned long end), TP_ARGS(start, end), diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c index eec82775c5bf..af69b1e24f40 100644 --- a/virt/kvm/kvm_main.c +++ b/virt/kvm/kvm_main.c @@ -2558,6 +2558,8 @@ static int kvm_vm_set_mem_attributes(struct kvm *kvm, gfn_t start, gfn_t end, entry = attributes ? xa_mk_value(attributes) : NULL; + trace_kvm_vm_set_mem_attributes(start, end, attributes); + mutex_lock(&kvm->slots_lock); /* Nothing to do if the entire range as the desired attributes. */ |