From: Zhao Liu <zhao1.liu@intel.com>
Date: Mon, 10 Feb 2025 03:00:44 +0000 (+0800)
Subject: rust/irq: Add a helper to convert [InterruptSource] to pointer
X-Git-Tag: v10.0.0-rc0~51^2~11
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=e6f1195f55427bf246bb85b1bcbbfd8fbdc51889;p=thirdparty%2Fqemu.git

rust/irq: Add a helper to convert [InterruptSource] to pointer

This is useful when taking an InterruptSource slice and passing it to C
function.

Suggested-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Zhao Liu <zhao1.liu@intel.com>
Link: https://lore.kernel.org/r/20250210030051.2562726-4-zhao1.liu@intel.com
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
---

diff --git a/rust/qemu-api/src/irq.rs b/rust/qemu-api/src/irq.rs
index 835b027d5e..672eec1430 100644
--- a/rust/qemu-api/src/irq.rs
+++ b/rust/qemu-api/src/irq.rs
@@ -83,6 +83,12 @@ where
     pub(crate) const fn as_ptr(&self) -> *mut *mut IRQState {
         self.cell.as_ptr()
     }
+
+    #[allow(dead_code)]
+    pub(crate) const fn slice_as_ptr(slice: &[Self]) -> *mut *mut IRQState {
+        assert!(!slice.is_empty());
+        slice[0].as_ptr()
+    }
 }
 
 impl Default for InterruptSource {