Commit 43e97e2c1a for qemu.org

commit 43e97e2c1afb0f292419fd86383df221ede2bddf
Author: Richard Henderson <richard.henderson@linaro.org>
Date:   Fri Sep 26 15:19:16 2025 -0700

    accel/hvf: Create hvf_protect_clean_range, hvf_unprotect_dirty_range

    Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
    Tested-by: Philippe Mathieu-Daudé <philmd@linaro.org>
    Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
    Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
    Reviewed-by: Akihiko Odaki <odaki@rsg.ci.i.u-tokyo.ac.jp>
    Message-ID: <20251103101034.59039-2-philmd@linaro.org>

diff --git a/accel/hvf/hvf-all.c b/accel/hvf/hvf-all.c
index 77f4e4e4f3..741b4bdc4f 100644
--- a/accel/hvf/hvf-all.c
+++ b/accel/hvf/hvf-all.c
@@ -58,6 +58,31 @@ void assert_hvf_ok_impl(hv_return_t ret, const char *file, unsigned int line,
     abort();
 }

+static void do_hv_vm_protect(hwaddr start, size_t size,
+                             hv_memory_flags_t flags)
+{
+    hv_return_t ret;
+
+    trace_hvf_vm_protect(start, size, flags,
+                         flags & HV_MEMORY_READ  ? 'R' : '-',
+                         flags & HV_MEMORY_WRITE ? 'W' : '-',
+                         flags & HV_MEMORY_EXEC  ? 'X' : '-');
+
+    ret = hv_vm_protect(start, size, flags);
+    assert_hvf_ok(ret);
+}
+
+void hvf_protect_clean_range(hwaddr addr, size_t size)
+{
+    do_hv_vm_protect(addr, size, HV_MEMORY_READ | HV_MEMORY_EXEC);
+}
+
+void hvf_unprotect_dirty_range(hwaddr addr, size_t size)
+{
+    do_hv_vm_protect(addr, size,
+                     HV_MEMORY_READ | HV_MEMORY_WRITE | HV_MEMORY_EXEC);
+}
+
 static int do_hvf_set_memory(hvf_slot *slot, hv_memory_flags_t flags)
 {
     struct mac_slot *macslot;
diff --git a/accel/hvf/trace-events b/accel/hvf/trace-events
index 2fd3e127c7..f989da5949 100644
--- a/accel/hvf/trace-events
+++ b/accel/hvf/trace-events
@@ -5,3 +5,4 @@
 # 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
+hvf_vm_protect(uint64_t paddr, size_t size, uint8_t flags, const char r, const char w, const char e) "paddr:0x%016"PRIx64" size:0x%08zx flags:0x%02x/%c%c%c"
diff --git a/include/system/hvf_int.h b/include/system/hvf_int.h
index 3d2be4092e..5a57691885 100644
--- a/include/system/hvf_int.h
+++ b/include/system/hvf_int.h
@@ -89,6 +89,9 @@ int hvf_arch_get_registers(CPUState *);
 /* Must be called by the owning thread */
 void hvf_arch_update_guest_debug(CPUState *cpu);

+void hvf_protect_clean_range(hwaddr addr, size_t size);
+void hvf_unprotect_dirty_range(hwaddr addr, size_t size);
+
 struct hvf_sw_breakpoint {
     vaddr pc;
     vaddr saved_insn;