Merge tag 'for-upstream' of https://gitlab.com/bonzini/qemu into staging

* cpu-exec: more cleanups to CPU loop exits
* python: bump bundled Meson to 1.9.0
* rust: require Rust 1.83.0
* rust: temporarily remove from Ubuntu CI
* rust: vmstate: convert to use builder pattern
* rust: split "qemu-api" crate
* rust: rename qemu_api_macros -> qemu_macros
* rust: re-export qemu macros from other crates
* x86: fix functional test failure for Xen emulation
* x86: cleanups

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* tag 'for-upstream' of https://gitlab.com/bonzini/qemu: (60 commits)
  accel/kvm: Set guest_memfd_offset to non-zero value only when guest_memfd is valid
  accel/kvm: Zero out mem explicitly in kvm_set_user_memory_region()
  accel/kvm: Switch to check KVM_CAP_GUEST_MEMFD and KVM_CAP_USER_MEMORY2 on VM
  i386/kvm: Drop KVM_CAP_X86_SMM check in kvm_arch_init()
  multiboot: Fix the split lock
  target/i386: Define enum X86ASIdx for x86's address spaces
  i386/cpu: Enable SMM cpu address space under KVM
  hpet: guard IRQ handling with BQL
  rust: do not inline do_init_io
  rust: meson: remove unnecessary complication in device crates
  docs: update rust.rst
  rust: re-export qemu macros from common/qom/hwcore
  rust: re-export qemu_macros internal helper in "bits"
  rust: repurpose qemu_api -> tests
  rust/pl011: drop dependency on qemu_api
  rust/hpet: drop now unneeded qemu_api dep
  rust: rename qemu_api_macros -> qemu_macros
  rust: split "hwcore" crate
  rust: split "system" crate
  rust: split "chardev" crate
  ...

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

1 files changed, 43 insertions, 0 deletions

diff --git a/rust/util/src/module.rs b/rust/util/src/module.rs
new file mode 100644
index 0000000000..06c45fc142
--- /dev/null
+++ b/rust/util/src/module.rs
@@ -0,0 +1,43 @@
+// Copyright 2024, Linaro Limited
+// Author(s): Manos Pitsidianakis <manos.pitsidianakis@linaro.org>
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+//! Macro to register blocks of code that run as QEMU starts up.
+
+#[macro_export]
+macro_rules! module_init {
+    ($type:ident => $body:block) => {
+        const _: () = {
+            #[used]
+            #[cfg_attr(
+                not(any(target_vendor = "apple", target_os = "windows")),
+                link_section = ".init_array"
+            )]
+            #[cfg_attr(target_vendor = "apple", link_section = "__DATA,__mod_init_func")]
+            #[cfg_attr(target_os = "windows", link_section = ".CRT$XCU")]
+            pub static LOAD_MODULE: extern "C" fn() = {
+                extern "C" fn init_fn() {
+                    $body
+                }
+
+                extern "C" fn ctor_fn() {
+                    unsafe {
+                        $crate::bindings::register_module_init(
+                            Some(init_fn),
+                            $crate::bindings::module_init_type::$type,
+                        );
+                    }
+                }
+
+                ctor_fn
+            };
+        };
+    };
+
+    // shortcut because it's quite common that $body needs unsafe {}
+    ($type:ident => unsafe $body:block) => {
+        ::util::module_init! {
+            $type => { unsafe { $body } }
+        }
+    };
+}