accel/hvf: Trace VM memory mapping
Trace memory mapped / unmapped in the guest.
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20250623121845.7214-8-philmd@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
diff --git a/accel/hvf/hvf-accel-ops.c b/accel/hvf/hvf-accel-ops.c
index d60446b..b389772 100644
--- a/accel/hvf/hvf-accel-ops.c
+++ b/accel/hvf/hvf-accel-ops.c
@@ -59,6 +59,7 @@
#include "system/hvf_int.h"
#include "system/runstate.h"
#include "qemu/guest-random.h"
+#include "trace.h"
HVFState *hvf_state;
@@ -97,6 +98,7 @@
if (macslot->present) {
if (macslot->size != slot->size) {
macslot->present = 0;
+ trace_hvf_vm_unmap(macslot->gpa_start, macslot->size);
ret = hv_vm_unmap(macslot->gpa_start, macslot->size);
assert_hvf_ok(ret);
}
@@ -109,6 +111,10 @@
macslot->present = 1;
macslot->gpa_start = slot->start;
macslot->size = slot->size;
+ trace_hvf_vm_map(slot->start, slot->size, slot->mem, flags,
+ flags & HV_MEMORY_READ ? 'R' : '-',
+ flags & HV_MEMORY_WRITE ? 'W' : '-',
+ flags & HV_MEMORY_EXEC ? 'E' : '-');
ret = hv_vm_map(slot->mem, slot->start, slot->size, flags);
assert_hvf_ok(ret);
return 0;
diff --git a/accel/hvf/trace-events b/accel/hvf/trace-events
new file mode 100644
index 0000000..2fd3e12
--- /dev/null
+++ b/accel/hvf/trace-events
@@ -0,0 +1,7 @@
+# SPDX-License-Identifier: GPL-2.0-or-later
+#
+# See docs/devel/tracing.rst for syntax documentation.
+
+# hvf-accel-ops.c
+hvf_vm_map(uint64_t paddr, uint64_t size, void *vaddr, uint8_t flags, const char r, const char w, const char e) "paddr:0x%016"PRIx64" size:0x%08"PRIx64" vaddr:%p flags:0x%02x/%c%c%c"
+hvf_vm_unmap(uint64_t paddr, uint64_t size) "paddr:0x%016"PRIx64" size:0x%08"PRIx64
diff --git a/accel/hvf/trace.h b/accel/hvf/trace.h
new file mode 100644
index 0000000..83a1883
--- /dev/null
+++ b/accel/hvf/trace.h
@@ -0,0 +1,2 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+#include "trace/trace-accel_hvf.h"
diff --git a/meson.build b/meson.build
index dbc97bf..b5f74aa 100644
--- a/meson.build
+++ b/meson.build
@@ -3630,6 +3630,7 @@
endif
if have_system
trace_events_subdirs += [
+ 'accel/hvf',
'accel/kvm',
'audio',
'backends',
