Linux 5.7 Features
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FSINFO System Call, Mount Notifications Sent In For Linux 5.7 To Provide Better Storage Details
Red Hat's David Howells has sent in pull requests introducing the new fsinfo() system call and mount/superblock notifications and as part of that a general notification mechanism for the kernel.
This stems from work Howells has been pursuing for the past several months for exposing more file-system information and mount notifications. The fsinfo() system call exposes more file-system / VFS information like file-system UUIDs, capabilities, mount attributes, and other possible bits. With the fsinfo() pull request are also implementations for EXT4 and NFS.
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Linux 5.7 EFI Changes: "The GRUB Project Is Showing Signs Of Life Again"
Ingo Molnar on Monday began sending in his feature pull requests for the Linux 5.7 kernel merge window. Of the pull requests worth noting are the EFI changes.
Molnar characterized the GRUB boot-loader project as "showing signs of life again" following the recent introduction of a generic Linux/UEFI boot protocol rather than "x86 specific hacks". The hope is that over time all new extensions will be introduced via that protocol to avoid these hacks for cleaning up the EFI kernel boot code in due course.
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Linux 5.7 For 64-bit ARM Brings In-Kernel Pointer Authentication, Activity Monitors
The 64-bit ARM architecture code will support several new features with the in-development Linux 5.7 kernel.
Highlights of the 64-bit ARM (AArch64 / ARM64) code for Linux 5.7 include:
- In-kernel pointer authentication is now supported. Back in 2018 added to the kernel was pointer authentication support but only exposed for user-space usage. As explained back then, "Pointer authentication can be supported by ARMv8.3 hardware and newer to allow for signing and authenticating of pointers against secret keys. The purpose of this pointer authentication is to mitigate ROP attacks and other potential buffer-overrun-style attacks." Now with Linux 5.7 the ARMv8.3+ pointer authentication support also works within the kernel.
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Linux 5.7 Media Updates Add H.264 / H.265 / VP9 Decode To The Meson Driver
The media subsystem updates have landed for the Linux 5.7 kernel merge window.
The media subsystem updates are predominantly made up by individual media driver updates as usual. Some of the highlights include:
- The Amlogic Meson VDEC driver now has support for VP9 decoding, H.264 decoding, and HEVC decode.
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Linux 5.7 Power Management Includes Fixes, Tiny Power Button Driver
Intel's Rafael Wysocki who oversees the kernel's power management area has sent in his relevant pull requests for the Linux 5.7 kernel merge window.
Highlights of the power management updates for Linux 5.7 include:
- Support for Krait-based SoCs within the Qualcomm driver.
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Linux 5.7's USB Changes Range From Apple Fast Charging To Reporting USB-C Orientation
With the newly-minted Linux 5.6 kernel is initial support for USB4 based on Intel's Thunderbolt code while for Linux 5.7 is a wide variety of other USB changes.
There aren't any big USB4 changes to note with the Linux 5.7 kernel that is now going through its merge window. But there are plenty of other interesting USB changes for the 5.7 version...
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Split Lock Detection Sent In For Linux 5.7 To Spot Performance Issues, Unprivileged DoS
The previously reported work on split lock detection due to its big performance hit is now queued up for Linux 5.7.
Split locks occur when an atomic instruction spans multiple cache lines and requires a global bus lock for ensuring atomicity. These split locks can take at least 1,000 more cycles than an atomic operation within a single cache line.
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Intel Begins Prepping More Linux Code For Data Streaming Accelerator In Sapphire Rapids
Last year Intel outlined the Data Streaming Accelerator (DSA) as a feature on future Intel CPUs for high-performance data movement and transformation operations for networking and storage / persistent memory. We are now seeing more of the Intel DSA work beginning to take shape for the Linux kernel.
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The Linux 5.7 Scheduler Changes Bring Prominent Additions
The Linux 5.7 Scheduler Changes Bring Prominent Additions For Intel & Arm CPUs
Linux 5.7 Graphics Driver Updates Enable Tiger Lake By Default
Linux 5.7 Graphics Driver Updates Enable Tiger Lake By Default, OLED Backlight Support
Linux 5.7 Networking Changes Bring Qualcomm IPA
Linux 5.7 Networking Changes Bring Qualcomm IPA, New Intel Driver Additions
Linux 5.7 Gets A Unified/User-Space-Access-Intended Accelerator
Linux 5.7 Gets A Unified/User-Space-Access-Intended Accelerator Framework
Btrfs File-System Updates Land In Linux 5.7
Btrfs File-System Updates Land In Linux 5.7
Linux 5.7 Seeing Updates For Intel SpeedSelect Technology
Linux 5.7 Seeing Updates For Intel SpeedSelect Technology, Jasper Lake PMC
Plenty Of New Sound Hardware Support
Plenty Of New Sound Hardware Support, Continued Sound Open Firmware Work For Linux 5.7
PCI Changes For Linux 5.7 Bring Error Disconnect Recover
PCI Changes For Linux 5.7 Bring Error Disconnect Recover, P2P DMA For Skylake-E
Linux 5.7's Char/Misc Brings MHI Bus, Habana Labs AI Accelerator
Linux 5.7's Char/Misc Brings MHI Bus, Habana Labs AI Accelerator Code Additions
Linux 5.7 Adds Support For The Qualcomm Snapdragon 865
Linux 5.7 Adds Support For The Qualcomm Snapdragon 865, Mainline PinePhone Support
The New Microsoft exFAT File-System Driver Has Landed In Linux
The New Microsoft exFAT File-System Driver Has Landed In Linux 5.7
Today's Articles on Linux 5.7 Development
XFS Working Towards Online Repair, Many Underlying Improvements
Linux 5.7 To Support Spawning A Process In A Different Cgroup From Its Parent
KVM With Linux 5.7 Supporting Protected/Secure VM Guests For IBM POWER + s390
Loongson Improvements Land In Linux 5.7 To Improve The Chinese MIPS CPUs
DRM TTM Hugepage Support Lands In Linux 5.7
Linux 5.7 Perf Changes Include Additions For AMD Zen 3
Linux 5.7 Perf Changes Include Additions For AMD Zen 3, Intel Tiger Lake
/dev/random Seeing Performance Work For Linux 5.7
/dev/random Seeing Performance Work For Linux 5.7
C-SKY Architecture Gets Fix For Its Own Speculative Execution...
C-SKY Architecture Gets Fix For Its Own Speculative Execution Bug In Linux 5.7
Linux 5.7 Changes So Far
Linux 5.7 Changes So Far: New exFAT Driver, Tiger Lake Graphics By Default, Apple Fast Charge, Etc
Intel P-State Driver Shifting To "Schedutil" Governor Default...
Intel P-State Driver Shifting To "Schedutil" Governor Default With Linux 5.7
F2FS Introduces Zstd Compression Support With Linux 5.7
F2FS Introduces Zstd Compression Support With The Linux 5.7 Kernel
Linux Floppy Disk Driver Gets Improvements For 5.7 Kernel
Short Topix: Plex Comes Under Fire From Pro-Copyright Group
Some Older Intel Tablets Finally Seeing Working Touchscreen
Some Older Intel Tablets Finally Seeing Working Touchscreen With Linux 5.7
More changes in Linux 5.7
OverlayFS Can Be Paired With VirtIO-FS On Linux 5.7
Open-Source NVIDIA "Nouveau" Driver Should Trip Less Often On Some GPUs With Linux 5.7
Linux 5.7 Begins Landing Support For The Kendryte K210 Dual-Core
Linux 5.7 Begins Landing Support For The Kendryte K210 Dual-Core RISC-V SoC
Ceph Sees Some Nice Performance Improvements With Linux 5.7
Ceph Sees Some Nice Performance Improvements With Linux 5.7
Samsung Releases exFAT-Utils To Format File-System, Fsck
Samsung Releases exFAT-Utils To Format File-System, Fsck
XFS Has A Second Round Of Improvements For Linux 5.7
XFS Has A Second Round Of Improvements For Linux 5.7
FAT File-System Driver
FAT File-System Driver For Linux Sees Patch To Run Multiple Times Faster
LLVM
Linux 5.7 Makes It Very Easy To Build The Kernel With An LLVM-Based Toolchain
The New Features Of The Linux 5.7 Kernel
The New Features Of The Linux 5.7 Kernel: Tiger Lake Graphics Stable, New exFAT, Zstd F2FS, Performance
Linux 5.7 Will Let You Setup A Swap File Over A Network With SMB
Linux 5.7 Will Let You Setup A Swap File Over A Network With SMB3/Samba
F2FS Added Zstd Compression With Linux 5.7
F2FS Added Zstd Compression With Linux 5.7 While Now is Working On LZO-RLE
Seven Changes We've Been Waiting On That You Will Not Find...
Seven Changes We've Been Waiting On That You Will Not Find In Linux 5.7