content: blog: Release v41.0

Signed-off-by: Rob Bradford <[email protected]>

Author: rbradford

content/en/blog/v41.0/index.md

@@ -0,0 +1,64 @@
+---
+title: "Cloud Hypervisor v41.0 Released!"
+date: 2024-08-16T12:17:19Z
+draft: false
+contributors: [Cloud Hypervisor Team]
+---
+This release has been tracked in our [roadmap
+project](https://github.com/orgs/cloud-hypervisor/projects/6) as iteration
+v41.0. The following user visible changes have been made:
+
+### Experimental "Pvmemcontrol" Support
+
+VMM support has been added for this experimental functionality (requires
+currently out of tree Linux kernel patches) to allow guests to control its
+physical memory properties to allow optimisations and security features.
+(#6318, #6467)
+
+### Sandboxing With Landlock Support
+
+Support for restricting the VMM process using the Linux kernel "Landlock" API
+has been added  - this can be used to restrict the files (and the read/write
+permissions) that the VMM process can access. This adds another layer of
+security alongside the existing sycall filters (`seccomp`) - this can be
+enabled with `--landlock` and [fully documentated](docs/landlock.md). (#5170)
+
+### Notable Performance Improvements
+
+* Reduced heap allocations in `virtio-net` via the use of a cache of `Iovec`
+  structures (#6636)
+* Notification suppression ("`EVENT_IDX`") support has been added to
+  `virtio-block` giving a 60% improvement in single queue block throughput and
+  IOPs performance (#6580)
+* Correct size used for `status` field in `virtio-block` state (#6586)
+
+### Notable Bug Fixes
+
+* Avoid panic on out-of-bounds PCI MSI-X access (#6657)
+* Fix undefined behaviour on AArch64 leading to wrong optimisation on KVM API
+  access (#6647)
+* Rust v1.80.0 added use of `fcntl` syscall on debug assertions so this is now
+  included in the virtio-device seccomp filters for tests that use this (#6648)
+* Short reads are now handled correctly in the `virtio-vsock` device (#6621)
+* Fix undefined behaviour on TTY ioctl leading to wrong optimisation (#6568)
+
+### Contributors
+
+Many thanks to everyone who has contributed to our release:  
+
+* Alyssa Ross <[email protected]>
+* Bo Chen <[email protected]>
+* Changyuan Lyu <[email protected]>
+* Jinank Jain <[email protected]>
+* Julian Stecklina <[email protected]>
+* Muminul Islam <[email protected]>
+* Nuno Das Neves <[email protected]>
+* Praveen K Paladugu <[email protected]>
+* Rob Bradford <[email protected]>
+* Songqian Li <[email protected]>
+* Wei Liu <[email protected]>
+* Yuanchu Xie <[email protected]>
+* ihciah <[email protected]>
+* wuxinyue <[email protected]>
+### Download
+ See the <a href="https://github.com/cloud-hypervisor/cloud-hypervisor/releases/tag/v41.0">GitHub Release</a> for the release assets.