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

* futex: support Windows
* qemu-thread: Avoid futex abstraction for non-Linux
* migration, hw/display/apple-gfx: replace QemuSemaphore with QemuEvent
* rust: bindings for Error
* hpet, rust/hpet: return errors from realize if properties are incorrect
* rust/hpet: Drop BqlCell wrapper for num_timers
* target/i386: Emulate ftz and denormal flag bits correctly
* i386/kvm: Prefault memory on page state change

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* tag 'for-upstream' of https://gitlab.com/bonzini/qemu: (31 commits)
  tests/tcg/x86_64/fma: add test for exact-denormal output
  target/i386: Wire up MXCSR.DE and FPUS.DE correctly
  target/i386: Use correct type for get_float_exception_flags() values
  target/i386: Detect flush-to-zero after rounding
  hw/display/apple-gfx: Replace QemuSemaphore with QemuEvent
  migration/postcopy: Replace QemuSemaphore with QemuEvent
  migration/colo: Replace QemuSemaphore with QemuEvent
  migration: Replace QemuSemaphore with QemuEvent
  qemu-thread: Document QemuEvent
  qemu-thread: Use futex if available for QemuLockCnt
  qemu-thread: Use futex for QemuEvent on Windows
  qemu-thread: Avoid futex abstraction for non-Linux
  qemu-thread: Replace __linux__ with CONFIG_LINUX
  futex: Support Windows
  futex: Check value after qemu_futex_wait()
  i386/kvm: Prefault memory on page state change
  rust: make TryFrom macro more resilient
  docs: update Rust module status
  rust/hpet: Drop BqlCell wrapper for num_timers
  rust/hpet: return errors from realize if properties are incorrect
  ...

Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>

1 files changed, 8 insertions, 4 deletions

diff --git a/rust/qemu-api/src/qdev.rs b/rust/qemu-api/src/qdev.rs
index 1279d7a58d..0610959f46 100644
--- a/rust/qemu-api/src/qdev.rs
+++ b/rust/qemu-api/src/qdev.rs
@@ -12,10 +12,11 @@ use std::{
 pub use bindings::{ClockEvent, DeviceClass, Property, ResetType};
 
 use crate::{
-    bindings::{self, qdev_init_gpio_in, qdev_init_gpio_out, Error, ResettableClass},
+    bindings::{self, qdev_init_gpio_in, qdev_init_gpio_out, ResettableClass},
     callbacks::FnCall,
     cell::{bql_locked, Opaque},
     chardev::Chardev,
+    error::{Error, Result},
     irq::InterruptSource,
     prelude::*,
     qom::{ObjectClass, ObjectImpl, Owned},
@@ -108,7 +109,7 @@ pub trait DeviceImpl: ObjectImpl + ResettablePhasesImpl + IsA<DeviceState> {
     ///
     /// If not `None`, the parent class's `realize` method is overridden
     /// with the function pointed to by `REALIZE`.
-    const REALIZE: Option<fn(&Self)> = None;
+    const REALIZE: Option<fn(&Self) -> Result<()>> = None;
 
     /// An array providing the properties that the user can set on the
     /// device.  Not a `const` because referencing statics in constants
@@ -134,10 +135,13 @@ pub trait DeviceImpl: ObjectImpl + ResettablePhasesImpl + IsA<DeviceState> {
 /// readable/writeable from one thread at any time.
 unsafe extern "C" fn rust_realize_fn<T: DeviceImpl>(
     dev: *mut bindings::DeviceState,
-    _errp: *mut *mut Error,
+    errp: *mut *mut bindings::Error,
 ) {
     let state = NonNull::new(dev).unwrap().cast::<T>();
-    T::REALIZE.unwrap()(unsafe { state.as_ref() });
+    let result = T::REALIZE.unwrap()(unsafe { state.as_ref() });
+    unsafe {
+        Error::ok_or_propagate(result, errp);
+    }
 }
 
 unsafe impl InterfaceType for ResettableClass {