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

* target/i386: optimize string instructions
* target/i386: new Sierra Forest and Clearwater Forest models
* rust: type-safe vmstate implementation
* rust: use interior mutability for PL011
* rust: clean ups
* memtxattrs: remove usage of bitfields from MEMTXATTRS_UNSPECIFIED
* gitlab-ci: enable Rust backtraces

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# gpg: Good signature from "Paolo Bonzini <bonzini@gnu.org>" [full]
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* tag 'for-upstream' of https://gitlab.com/bonzini/qemu: (49 commits)
  gitlab-ci: include full Rust backtraces in test runs
  rust: qemu-api: add sub-subclass to the integration tests
  rust/zeroable: Implement Zeroable with const_zero macro
  rust: qdev: make reset take a shared reference
  rust: pl011: drop use of ControlFlow
  rust: pl011: pull device-specific code out of MemoryRegionOps callbacks
  rust: pl011: remove duplicate definitions
  rust: pl011: wrap registers with BqlRefCell
  rust: pl011: extract PL011Registers
  rust: pl011: pull interrupt updates out of read/write ops
  rust: pl011: extract CharBackend receive logic into a separate function
  rust: pl011: extract conversion to RegisterOffset
  rust: pl011: hide unnecessarily "pub" items from outside pl011::device
  rust: pl011: remove unnecessary "extern crate"
  rust: prefer NonNull::new to assertions
  rust: vmstate: make order of parameters consistent in vmstate_clock
  rust: vmstate: remove translation of C vmstate macros
  rust: pl011: switch vmstate to new-style macros
  rust: qemu_api: add vmstate_struct
  rust: vmstate: add public utility macros to implement VMState
  ...

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

1 files changed, 4 insertions, 21 deletions

diff --git a/rust/hw/char/pl011/src/memory_ops.rs b/rust/hw/char/pl011/src/memory_ops.rs
index c4e8599ba4..432d326389 100644
--- a/rust/hw/char/pl011/src/memory_ops.rs
+++ b/rust/hw/char/pl011/src/memory_ops.rs
@@ -24,28 +24,11 @@ pub static PL011_OPS: MemoryRegionOps = MemoryRegionOps {
 };
 
 unsafe extern "C" fn pl011_read(opaque: *mut c_void, addr: hwaddr, size: c_uint) -> u64 {
-    assert!(!opaque.is_null());
-    let mut state = unsafe { NonNull::new_unchecked(opaque.cast::<PL011State>()) };
-    let val = unsafe { state.as_mut().read(addr, size) };
-    match val {
-        std::ops::ControlFlow::Break(val) => val,
-        std::ops::ControlFlow::Continue(val) => {
-            // SAFETY: self.char_backend is a valid CharBackend instance after it's been
-            // initialized in realize().
-            let cb_ptr = unsafe { core::ptr::addr_of_mut!(state.as_mut().char_backend) };
-            unsafe {
-                qemu_chr_fe_accept_input(cb_ptr);
-            }
-
-            val
-        }
-    }
+    let mut state = NonNull::new(opaque).unwrap().cast::<PL011State>();
+    unsafe { state.as_mut() }.read(addr, size)
 }
 
 unsafe extern "C" fn pl011_write(opaque: *mut c_void, addr: hwaddr, data: u64, _size: c_uint) {
-    unsafe {
-        assert!(!opaque.is_null());
-        let mut state = NonNull::new_unchecked(opaque.cast::<PL011State>());
-        state.as_mut().write(addr, data)
-    }
+    let mut state = NonNull::new(opaque).unwrap().cast::<PL011State>();
+    unsafe { state.as_mut() }.write(addr, data);
 }