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virtio-devices: avoid creating a temporary vector

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... by passing the slice along instead.

On-behalf-of: SAP julian.stecklina@sap.com
Signed-off-by: Julian Stecklina <julian.stecklina@cyberus-technology.de>
This commit is contained in:
Julian Stecklina
2025-11-07 15:05:24 +01:00
committed by Rob Bradford
parent 3d5f9a3a98
commit fc99e299c3
1 changed files with 7 additions and 3 deletions
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10
virtio-devices/src/vhost_user/vu_common_ctrl.rs
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@@ -570,12 +570,16 @@ impl VhostUserHandle {
// divide it by 8.
let len = region.size() / 8;
// SAFETY: region is of size len
let bitmap = unsafe {
let bitmap: &[u64] = unsafe {
// Cast the pointer to u64
let ptr = region.as_ptr() as *const u64;
std::slice::from_raw_parts(ptr, len).to_vec()
std::slice::from_raw_parts(ptr, len)
};
Ok(MemoryRangeTable::from_bitmap(bitmap, 0, 4096))
Ok(MemoryRangeTable::from_bitmap(
bitmap.iter().copied(),
0,
4096,
))
} else {
Err(Error::MissingShmLogRegion)
}