Open-source News

Intel AEX Notify Support Prepped For Linux To Help Enhance SGX Enclave Security

Phoronix - Sun, 11/06/2022 - 19:01
Future Intel CPUs and some existing processors via a microcode update will support a new feature called the Asynchronous EXit (AEX) notification mechanism to help with Software Guard Extensions (SGX) enclave security. Patches for the Linux kernel are pending for implementing this Intel AEX Notify support with capable processors...

FFmpeg Lands NVIDIA NVENC AV1 Encoding Support

Phoronix - Sun, 11/06/2022 - 18:41
Along with the likes of OBS Studio adding NVENC AV1 support for enjoying GPU-accelerated AV1 video encoding with GeForce RTX 40 series GPUs, the widely-used FFmpeg library has merged its support for NVIDIA NVENC AV1 video encoding...

Linux Laptop Backlight Fixes On The Way For v6.1, More Testing Encouraged

Phoronix - Sun, 11/06/2022 - 18:09
Last month Red Hat engineer Hans de Goede warned that old and "weird" laptops could see broken backlight controls with the upcoming Linux 6.1 kernel. He issued a call for testing and as a result was provided valuable feedback that led to some new fixes now on the way. But there still is more work ahead and he's requested further testing by Linux laptop users to ensure the reworked backlight handling is in good shape...

AmpereOne Getting Mitigated Against Spectre-BHB With Linux 6.2

Phoronix - Sun, 11/06/2022 - 18:00
Made public earlier this year was Spectre-BHB / BHI as a speculative execution vulnerability similar to Spectre V2 and affecting Intel and Arm CPUs. At the time Neoverse N2 / N1 / V1 and older cores like Cortex-A15 / A57 / A72 were known to be vulnerable and required software mitigations. The upcoming AmpereOne is also vulnerable to Spectre-BHB and has a patch now on its way to the Linux kernel for mitigating this Spectre class vulnerability...

Btrfs "Reserve Flush Emergency" Feature Heading To Linux 6.2

Phoronix - Sun, 11/06/2022 - 17:41
"BTRFS_RESERVE_FLUSH_EMERGENCY" is on the way for the Linux 6.2 kernel for dealing with some issues that originally turned up within Facebook's data centers where they were seeing routine out-of-space transaction aborts. With BTRFS_RESERVE_FLUSH_EMERGENCY, Btrfs will try harder to avoid aborted transactions when running out of space...

Linux Moving Ahead With Enabling Kernel IBT By Default

Phoronix - Sat, 11/05/2022 - 19:00
As an enhancement to the out-of-the-box Linux kernel in its default x86_64 configuration, it was being eyed to enable Indirect Branch Tracking by default. That change to enable IBT by default has been picked up by TIP's x86/core branch, thus putting it on deck as material for submitting with next month's Linux 6.2 merge window...

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