Apple's macOS 26 "Tahoe" introduces a new disk image format called ASIF, designed to dramatically improve performance over previous formats like UDRW and sparse bundles -- achieving near-native read/write speeds for virtual machines and general disk image use. The Eclectic Light Company reports: Apple provides few technical details, other than stating that the intrinsic structure of ASIF disk images doesn't depend on the host file system's capabilities, and their size on the host depends on the size of the data stored in the disk. In other words, they're a sparse file in APFS, and are flagged as such. [...]

Conclusions:
- Where possible, in macOS 26 Tahoe in particular, VMs should use ASIF disk images rather than RAW/UDRW.
- Unless a sparse bundle is required (for example when it's hosted on a different file system such as that in a NAS), ASIF should be first choice for general purpose disk images in Tahoe.
- It would be preferable for virtualizers to be able to call a proper API rather than a command tool.
- Keep an eye on C-Command's DropDMG. I'm sure it will support ASIF disk images soon.

An anonymous reader shares a blog post from Google: Today, we're bringing you Android 16, rolling out first to supported Pixel devices with more phone brands to come later this year. This is the earliest Android has launched a major release in the last few years, which ensures you get the latest updates as soon as possible on your devices. Android 16 lays the foundation for our new Material 3 Expressive design, with features that make Android more accessible and easy to use.

An anonymous reader quotes a report from The Register: Broadcom's VMware business unit has dropped the lowest tier of its channel program, a move one analyst told The Register will benefit its rivals. The virtualization pioneer currently operates a four-tier channel program spanning Pinnacle, Premier, Select, and Registered partners. On Sunday the business unit announced the retirement of the Registered tier. A blog post written by Brian Moats, Broadcom's Senior Vice President for Global Commercial Sales and Partners, states VMware made the decision because "the vast majority of customer impact and business momentum comes from partners operating within the top three tiers."

Laura Falko, Broadcom's Head of Global Partner Programs, Marketing & Experience, told The Register "The vast majority of these [Registered] partners are inactive and lack the capabilities to support customers through VMware's evolving private cloud journey. That's why the Registered tier is being retired to ensure every active partner meets a higher standard of technical, sales, and service readiness." Falko told us VMware will give Registered partners 60 days' notice before deauthorization and then "work proactively with affected customers to transition them to qualified partners in the new ecosystem, ensuring continuity and support throughout the change."

VMware has also introduced new requirements for partners in its remaining tiers. The virtualization giant will require Pinnacle and Premier partners to maintain dedicated sales and technical resources, and to "execute joint business plans with VMware to ensure alignment and delivery with mutual results." The Broadcom business unit is also "beginning the process of transitioning partners who no longer meet the minimum program requirements or have not demonstrated consistent engagement," suggesting even Pinnacle, Premier, and Select partners are not safe. The Register asked VMware to define "consistent engagement" and Falko told us it includes "regular deal activity," ongoing participation in joint sales activities, staying up to date with training, and "sustained, proactive commitment to a partner's VMware customer base." The changes will only apply in its Americas, and Asia-Pacific and Japan regions. Broadcom didn't explain why Europe was excluded.

The Register notes that trade associations in Europe have criticized Broadcom's changes at VMware and urged the European Commission to investigate the company.

Longtime Slashdot reader me34point5 writes: OpenBSD quietly released the new version (7.7) of its "secure by default" operating system. This is the 58th release. Changes include improved hardware and VMM support, along with many kernel improvements. This release brings several specific improvements, including performance boosts on ARM64, Arm SVE support, AMD SEV virtualization enhancements, better low-memory handling on i386, and improved suspend/hibernate and SMP performance. It also updates graphics drivers with support for AMD Ryzen IA 300, Radeon RX 9070, and Intel Arrow Lake, along with expanded hardware support for MediaTek SoCs.

A full list of changes can be found here.

AMD has open-sourced its "GPU-IOV Module" for enabling SR-IOV-based virtualization on Instinct accelerators using the Linux kernel and KVM hypervisor, with features like GPU scheduling and VF/PF management. Notably, AMD plans to extend this virtualization support to client Radeon GPUs. Phoronix reports: The AMD GPU-IOV Module is for the Linux kernel and for providing SR-IOV based hardware virtualization in conjunction with the KVM hypervisor. GIM provides the GPU IOV virtualization, virtual function (VF) configuration and enablement, GPU scheduling for world switch, hang detection and FLR reset, and PF/VF handshake capabilities. Initially the AMD GIM driver is for the Instinct MI300X hardware and tested atop Ubuntu 22.04 LTS with ROCm 6.4. Those interested can find the AMD GIM code currently via GitHub. It's not laid out in the repository or any other public communications I've seen what any upstreaming plans are for this GIM driver to get it into the mainline Linux kernel.

An anonymous reader quotes a report from Android Authority: No matter the manufacturer, every Android phone has one thing in common: its software base. Manufacturers can heavily customize the look and feel of the Android OS they ship on their Android devices, but under the hood, the core system functionality is derived from the same open-source foundation: the Android Open Source Project. After over 16 years, Google is making big changes to how it develops the open source version of Android in an effort to streamline its development. [...] Beginning next week, all Android development will occur within Google's internal branches, and the source code for changes will only be released when Google publishes a new branch containing those changes. As this is already the practice for most Android component changes, Google is simply consolidating its development efforts into a single branch.

This change will have minimal impact on regular users. While it streamlines Android OS development for Google, potentially affecting the speed of new version development and bug reduction, the overall effect will likely be imperceptible. Therefore, don't expect this change to accelerate OS updates for your phone. This change will also have minimal impact on most developers. App developers are unaffected, as it pertains only to platform development. Platform developers, including those who build custom ROMs, will largely also see little change, since they typically base their work on specific tags or release branches, not the main AOSP branch. Similarly, companies that release forked AOSP products rarely use the main AOSP branch due to its inherent instability.

External developers who enjoy reading or contributing to AOSP will likely be dismayed by this news, as it reduces their insight into Google's development efforts. Without a GMS license, contributing to Android OS development becomes more challenging, as the available code will consistently lag behind by weeks or months. This news will also make it more challenging for some developers to keep up with new Android platform changes, as they'll no longer be able to track changes in AOSP. For reporters, this change means less access to potentially revealing information, as AOSP patches often provide insights into Google's development plans. [...] Google will share more details about this change when it announces it later this week. If you're interested in learning more, be sure to keep an eye out for the announcement and new documentation on source.android.com. Android Authority's Mishaal Rahman says Google is "committed to publishing Android's source code, so this change doesn't mean that Android is becoming closed-source."

"What will change is the frequency of public source code releases for specific Android components," says Rahman. "Some components like the build system, update engine, Bluetooth stack, Virtualization framework, and SELinux configuration are currently AOSP-first, meaning they're developed fully in public. Most Android components like the core OS framework are primarily developed internally, although some features, such as the unlocked-only storage area API, are still developed within AOSP."

Google has introduced a Debian Linux terminal app for Android in its ongoing effort to transform Android into a versatile desktop OS. It's initially available on Pixel devices running Android 15 but will be expanded to "all sufficiently robust Android phones" when Android 16 arrives later this year," writes ZDNet's Steven Vaughan-Nichols. An anonymous reader shares an excerpt from the report: Today, Linux is only available on the latest Pixel devices running Android 15. When Android 16 arrives later this year, it's expected that all sufficiently robust Android phones will be able to run Linux. Besides a Linux terminal, beta tests have already shown that you should be able to run desktop Linux programs from your phone -- games like Doom, for example. The Linux Terminal runs on top of a Debian Linux virtual machine. This enables you to access a shell interface directly on your Android device. And that just scratches the surface of Google's Linux Terminal. It's actually a do-it-all app that enables you to download, configure, and run Debian. Underneath Terminal runs the Android Virtualization Framework (AVF). These are the APIs that enable Android devices to run other operating systems.

To try the Linux Terminal app, you must activate Developer Mode by navigating to Settings - About Phone and tapping the build number seven times. I guess Google wants to make sure you want to do this. Once Developer Mode is enabled, the app can be activated via Settings - System - Developer options - Linux development environment. The initial setup may take a while because it needs to download Debian. Typically this is a 500MB download. Once in place, it allows you to adjust disk space allocation, set port controls for network communication, and recover the virtual machine's storage partition. However, it currently lacks support for graphical user interface (GUI) applications. For that, we'll need to wait for Android 16.

According to Android specialist Mishaal Rahman, 'Google wants to turn Android into a proper desktop operating system, and in order to do that, it has to make it work better with traditional PC input methods and display options. Therefore, Google is now testing new external display management tools in Android 16 that bring Android closer to other desktop OSes.'

Slashdot reader headlessbrick writes: Google security researchers have discovered a way to bypass AMD's security, enabling them to load unofficial microcode into its processors and modify the silicon's behaviour at will. To demonstrate this, they created a microcode patch that forces the chips to always return 4 when asked for a random number.

Beyond simply allowing Google and others to customize AMD chips for both beneficial and potentially malicious purposes, this capability also undermines AMD's secure encrypted virtualization and root-of-trust security mechanisms.
Obligatory XKCD.

Google is enhancing Android 16's Linux Terminal app to support graphical Linux applications, so Android Authority decided to put it to the test by running Doom. From the report: The Terminal app first appeared in the Android 15 QPR2 beta as a developer option, and it still remains locked behind developer settings. Since its initial public release, Google pushed a few changes that fixed issues with the installation process and added a settings menu to resize the disk, forward ports, and backup the installation. However, the biggest changes the company has been working on, which include adding hardware acceleration support and a full graphical environment, have not been pushed to any public releases.

Thankfully, since Google is working on this feature in the open, it's possible to simply compile a build of AOSP with these changes added in. This gives us the opportunity to trial upcoming features of the Android Linux Terminal app before a public release. To demonstrate, we fired up the Linux Terminal on a Pixel 9 Pro, tapped a new button on the top right to enter the Display activity, and then ran the 'weston' command to open up a graphical environment. (Weston is a reference implementation of a Wayland compositor, a modern display server protocol.)

We also went ahead and enabled hardware acceleration beforehand as well as installed Chocolate Doom, a source port of Doom, to see if it would run. Doom did run, as you can see below. It ran well, which is no surprise considering Doom can run on literal potatoes. There wasn't any audio because an audio server isn't available yet, but audio support is something that Google is still working on.

Migrating from VMware's virtualization platform could take up to four years and cost organizations between $300 and $3,000 per virtual machine, Gartner has warned in a new report. Companies running 2,000 or more virtual machines will need up to 10 full-time staff for initial assessment and another six employees for a nine-month technical evaluation, according to Gartner.

Parallels Desktop now supports running 64-bit x86 operating systems on Apple Silicon Macs through its proprietary emulation engine, enabling users to run traditional Windows and Linux distributions. However, performance is said to be "really slow." How-To Geek reports: The latest Parallels Desktop 20.2 update adds early support for x86 emulation on Apple Silicon, allowing traditional x86 PC operating systems to work on newer Mac computers. There were already apps like UTM that could do it (most of them are based on QEMU), but this feature uses Parallels' "proprietary emulation engine" paired with Apple's built-in hypervisor. [...] Parallels on Apple Silicon can now "run existing x86_64 Windows 10, Windows 11*, Windows Server 2019/2022, and some Linux distributives with UEFI BIOS via Parallels Emulator." You can also create new Windows 10 21H2 and Windows Server 2022 virtual machines if needed.

There are some big limitations. You can only run 64-bit x86 operating systems -- sorry, FreeDOS fans -- but those 64-bit operating systems can run 32-bit applications. There's also no support for USB devices, nested virtualization (so WSL2 won't work), or the Parallels hypervisor. Performance will also be "really slow," since x86 instructions have to be translated to ARM. The company said, "Windows boot time is about 2-7 minutes, depending on your hardware. Windows operating system responsiveness is also low."

"It's fair to say that by 1995, OS/2 was dead software walking," remembers a new article from the Register (which begins with a 1995 Usenet post from Gordon Letwin, Microsoft's lead architect on the OS/2 project).

But the real question is why this Microsoft-IBM collaboration on a DOS-replacing operating system ultimately lost out to Windows...? If OS/2 1.0 had been an 80386 OS, and had been able to multitask DOS apps, we think it would have been a big hit.... OS/2's initial 1980s versions were 16-bit products, at IBM's insistence. That is when the war was lost. That is when OS/2 flopped. Because its initial versions were even more crippled than the Deskpro 386...

Because OS/2 1.x flopped, Microsoft launched a product that fixed the key weakness of OS/2 1.x. That product was Windows 3, which worked perfectly acceptably on 286 machines, but if you ran the same installed copy on a 32-bit 386 PC, it worked better. Windows 3.0 could use the more sophisticated hardware of a 386 to give better multitasking of the market-dominating DOS apps...

IBM's poor planning shaped the PC industry of the 1990s more than Microsoft's successes. Windows 3.0 wasn't great, but it was good enough. It reversed people's perception of Windows after the failures of Windows 1 and Windows 2. Windows 3 achieved what OS/2 had intended to do. It transformed IBM PC compatibles from single-tasking text-only computers into graphical computers, with poor but just about usable multitasking...

Soon after Windows 3.0 turned out to be a hit, OS/2 NT was rebranded as Windows NT. Even the most ardent Linux enthusiast must c\oncede that Windows NT did quite well over three decades.
Back in 1995, the Register's author says they'd moved from OS/2 to Windows 95 "while it was still in beta.

"The UI was far superior, more hardware worked, and Doom ran much better."

An anonymous reader quotes a report from ZDNet, written by Steven Vaughan-Nichols: At KubeCon North America, SUSE announced a significant rebranding effort, several new product offerings, and the launch of SUSE AI, a secure platform for deploying and running generative AI (gen AI) applications. SUSE has renamed its entire portfolio to make product names more descriptive and customer-friendly. Notable changes include:

- Rancher, SUSE's Kubernetes offering, is now SUSE Rancher.
- Liberty Linux, the company's Red Hat Enterprise Linux (RHEL)/CentOS clone and support offering, becomes SUSE Multi Linux Support.
- Harvester is rebranded as SUSE Virtualization
- Longhorn is now SUSE Storage.

[...] Also, like everyone else, SUSE now has an AI offering: SUSE AI. This isn't an AI chatbot, like Red Hat's Lightspeed AI tool. No, it's a secure platform for deploying and running gen AI applications. This new offering addresses key challenges faced by enterprises as they move from AI experimentation to deployment, particularly in areas of security and compliance. These are SUSE AI's top features, as highlighted by Vaughan-Nichols:

1. Security by Design: SUSE AI provides security and certifications at the software infrastructure level, along with zero-trust security tools, templates, and compliance playbooks.
2. Multifaceted Trust: The platform ensures that generated data is correct and private customer and IP data remain secure. It supports deployment across various environments, including on-premise, hybrid, cloud, and air-gapped setups.
3. Choice and Flexibility: SUSE AI allows customers to select and deploy their preferred AI components and LLMs.
4. Simplified Operations: The platform provides simplified cluster operations, persistent storage, and easy access to pre-configured shared tools and services.

An anonymous reader quotes a report from GeekWire: Microsoft and Atom Computing say they've reached a new milestone in their effort to build fault-tolerant quantum computers that can show an advantage over classical computers. Microsoft says it will start delivering the computers' quantum capabilities to customers by the end of 2025, with availability via the Azure cloud service as well as through on-premises hardware. "Together, we are co-designing and building what we believe will be the world's most powerful quantum machine," Jason Zander, executive vice president at Microsoft, said in a LinkedIn posting.

Like other players in the field, Microsoft's Azure Quantum team and Atom Computing aim to capitalize on the properties of quantum systems -- where quantum bits, also known as qubits, can process multiple values simultaneously. That's in contrast to classical systems, which typically process ones and zeros to solve algorithms. Microsoft has been working with Colorado-based Atom Computing on hardware that uses the nuclear spin properties of neutral ytterbium atoms to run quantum calculations. One of the big challenges is to create a system that can correct the errors that turn up during the calculations due to quantum noise. The solution typically involves knitting together "physical qubits" to produce an array of "logical qubits" that can correct themselves.

In a paper posted to the ArXiv preprint server, members of the research team say they were able to connect 256 noisy neutral-atom qubits using Microsoft's qubit-virtualization system in such a way as to produce a system with 24 logical qubits. "This represents the highest number of entangled logical qubits on record," study co-author Krysta Svore, vice president of advanced quantum development for Microsoft Azure Quantum, said today in a blog posting. "Entanglement of the qubits is evidenced by their error rates being significantly below the 50% threshold for entanglement." Twenty of the system's logical qubits were used to perform successful computations based on the Bernstein-Vazirani algorithm, which is used as a benchmark for quantum calculations. "The logical qubits were able to produce a more accurate solution than the corresponding computation based on physical qubits," Svore said. "The ability to compute while detecting and correcting errors is a critical component to scaling to achieve scientific quantum advantage."

An anonymous reader quotes a report from BleepingComputer: VMware has announced that its VMware Fusion and VMware Workstation desktop hypervisors are now free to everyone for commercial, educational, and personal use. In May, the company also made VMware Workstation Pro and Fusion Pro free for personal use, allowing students and home users to set up virtualized test labs and experiment with other OSs by running virtual machines and Kubernetes clusters on Windows, Linux, and macOS devices. Starting this week, the Pro versions and the two products will no longer be available under a paid subscription model.

"Effective immediately, both VMware Fusion and VMware Workstation will transition away from the paid subscription model, meaning you can now utilize these tools without any cost. The paid versions of these offerings -- Workstation Pro and Fusion Pro -- are no longer available for purchase," said Broadcom product marketing director Himanshu Singh. "If you're currently under a commercial contract, you can rest easy knowing that your agreement will remain in effect until the end of your term. You will continue to receive the full level of service and enterprise-grade support as per your contract."

While the free versions will include all the features available in the paid products, Broadcom will no longer provide users with support ticketing for troubleshooting. Broadcom plans to continue developing new features and improvements and ensure that updates are rolled out promptly. "We're actively investing in new features, usability improvements, and other valuable enhancements," Singh added. "Our engineering teams are committed to maintaining our high standards for stability, with timely updates and reliable performance." You can download VMware Fusion and VMware Workstation here (sign-in required).

Google will require all new mobile chipsets launching with Android 15 to support its Android Virtualization Framework (AVF), a significant shift in the operating system's security architecture. The mandate, reports AndroidAuthority that got a hold of Android's latest Vendor Software Requirements document, affects major chipmakers including Qualcomm, MediaTek, and Samsung's Exynos division. New processors like the Snapdragon 8 Elite and Dimensity 9400 must implement AVF support to receive Android certification.

AVF, introduced with Android 13, creates isolated environments for security-sensitive operations including code compilation and DRM applications. The framework also enables full operating system virtualization, with Google demonstrating Chrome OS running in a virtual machine on Android devices.

After closing a $69 billion deal to buy virtualization technology company VMware a year ago, Broadcom wasted no time ushering in big changes to the ways customers and partners buy and sell VMware offerings -- and many of those clients aren't happy. ArsTechnica: To get a deeper look at the impact that rising costs and overhauls like the end of VMware perpetual license sales have had on VMware users, Ars spoke with several companies in the process of quitting the software due to Broadcom's changes. Here's what's pushing them over the edge.

For some, VMware prices more than tripled under Broadcom Broadcom closed its VMware acquisition in November 2023, and by December 2023, the company announced that it would stop selling perpetual VMware licenses. VMware products were previously sold under 8,000 SKUs, but they have now been combined into a few bundle packages. Additionally, higher CPU core requirements per CPU subscription have made VMware more expensive for some reseller partners.

"As on-premises virtualization projects move from [enterprise license agreements] and perpetual licenses to new bundling, socket-to-core ratios, and consumption models, the costs and pricing can increase two or three times," Gartner's 2024 Hype Cycle for Data Center Infrastructure Technologies report that released in June reads. Numerous VMware customers I spoke with said their VMware costs rose 300 percent after Broadcom's takeover. Some companies have cited even higher price hikes -- including AT&T, which claimed that Broadcom proposed a 1,050 percent price hike. AT&T is suing Broadcom over perpetual license support and says it has looked into VMware alternatives.

"Google is developing a Linux terminal app for Android," reports the blog Android Authority. "The Terminal app can be enabled via developer options and will install Debian in a virtual machine.

"This app is likely intended for Chromebooks but might also be available for mobile devices, too." While there are ways to run some Linux apps on Android devices, all of those methods have some limitations and aren't officially supported by Google. Fortunately, though, Google is finally working on an official way to run Linux apps on Android... This Terminal app is part of the Android Virtualization Framework (AVF) and contains a WebView that connects to a Linux virtual machine via a local IP address, allowing you to run Linux commands from the Android host...

A set of patches under the tag "ferrochrome-dev-option" was recently submitted to the Android Open Source Project that adds a new developer option called Linux terminal under Settings > System > Developer options. This new option will enable a "Linux terminal app that runs inside the VM," according to its proposed description. Toggling this option enables the Terminal app that's bundled with AVF...

Google is still working on improving the Terminal app as well as AVF before shipping this feature... What's particularly interesting about the patch that adds these settings is that it was tested on "tangorpro" and "komodo," the codenames for the Pixel Tablet and Pixel 9 Pro XL respectively. This suggests that the Terminal app won't be limited to Chromebooks like the new desktop versions of Chrome for Android.

Nvidia is banking on its software expertise and broad GPU ecosystem to stay ahead in the fiercely competitive AI chip market, CEO Jensen Huang said in an interview with Goldman Sachs Wednesday. Huang pointed to NVIDIA's large base of installed GPUs and their software compatibility as key strengths.

Huang highlighted three key elements of Nvidia's competitive moat: a large installed base of GPUs across multiple platforms, the ability to enhance hardware with software like domain-specific libraries, and expertise in building rack-level systems. The CEO said Nvidia's chip design prowess, noting the company has developed seven different chips for its upcoming Blackwell platform.

These comments come as Nvidia faces increasing competition from rivals. Addressing supply chain concerns, Huang said NVIDIA has sufficient in-house intellectual property to shift manufacturing if necessary without significant disruption. The company plans to begin shipping Blackwell-based products in the fourth quarter of fiscal 2025, with volume production ramping up in fiscal 2026, according to Huang.

From the note that Goldman Sachs sent to its clients: 1) Accelerated Computing: Mr. Huang highlighted his long-held view that Moore's Law was no longer delivering the rate of innovation it had in the past and, as such, was driving computation inflation in Data Centers. Further, he noted that the densification and acceleration of the $1 trillion data center infrastructure installed base alone would drive growth over the next 10 years, as it would deliver material performance improvement and/or cost savings.

2) Customer ROI: Mr. Huang noted that we have hit the end of transistor scaling that enabled better utilization rates and cost reductions in the previous virtualization and cloud computing cycles. He explained that, while using a GPU to augment a CPU will drive an increase in cost in absolute terms (~2x) in the case of Spark (distributed processing system and analytics engine for big data), the net cost benefit could be as large as ~10x for an application like Spark given the speed up of ~20x. From a revenue generation perspective, Mr. Huang shared that hyperscale customers can generate $5 in rental revenue for every $1 spent on Nvidia's infrastructure, given sustained strength in the demand for accelerated computing.

The Register reports that Google "recently rewrote the firmware for protected virtual machines in its Android Virtualization Framework using the Rust programming language." And they add that Google "wants you to do the same, assuming you deal with firmware."

A post on Google's security blog by Android engineers Ivan Lozano and Dominik Maier promises to show "how to gradually introduce Rust into your existing firmware," adding "You'll see how easy it is to boost security with drop-in Rust replacements, and we'll even demonstrate how the Rust toolchain can handle specialized bare-metal targets."

This prompts the Register to quip that easy "is not a term commonly heard with regard to a programming language known for its steep learning curve." Citing the lack of high-level security mechanisms in firmware, which is often written in memory-unsafe languages such as C or C++, Lozano and Maier argue that Rust provides a way to avoid the memory safety bugs like buffer overflows and use-after-free that account for the majority of significant vulnerabilities in large codebases. "Rust provides a memory-safe alternative to C and C++ with comparable performance and code size," they note. "Additionally it supports interoperability with C with no overhead."
At one point the blog post explains that "You can replace existing C functionality by writing a thin Rust shim that translates between an existing Rust API and the C API the codebase expects." But their ultimate motivation is greater security. "Android's use of safe-by-design principles drives our adoption of memory-safe languages like Rust, making exploitation of the OS increasingly difficult with every release."

And the Register also got this quote from Lars Bergstrom, Google's director of engineering for Android Programming Languages (and chair of the Rust Foundation's board of directors). "At Google, we're increasing Rust's use across Android, Chromium, and more to reduce memory safety vulnerabilities. We're dedicated to collaborating with the Rust ecosystem to drive its adoption and provide developers with the resources and training they need to succeed.

"This work on bringing Rust to embedded and firmware addresses another critical part of the stack."