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Kernel: Intel and AMD

Submitted by Roy Schestowitz on Friday 29th of January 2021 12:59:42 AM Filed under
Linux

  • Intel Publishes Initial Linux Driver Patches For New "Display13"

    Intel's open-source driver developers have begun posting patches for bringing up "Display13" as their next-gen display IP that looks like it will be introduced after the upcoming Rocket Lake / Alder Lake / DG1 platforms. 

    Patches surfaced for a first time today in the context of this new "Display13" block as their newest display intellectual property. Display13 is described as "a pretty natural evolution" from Display12 as found with Gen12 graphics hardware in the likes of Tiger Lake, Rocket Lake, DG1, and Alder Lake S. The code out today is not introducing any new platform support but is just laying the groundwork around the new Display13. 

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  • Linux patch reveals AMD's RDNA2 GPUs support Duty Cycle Scaling power management feature for ultraportable devices

    The DCS feature was discovered in a recent Linux patch and it looks like it is designed specifically for laptop GPUs, even though it is supported on the high-end RX 6800 series, as well as the upcoming RX 6700 mid-range models. DCS reduces power consumption by turning the core off when thermal and power limits are exceeded.

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  • Linux Kernel Orphans Itanium Support, Linus Torvalds Acknowledges Its Death

    Just last week I wrote about Itanium IA-64 support in Linux kernel being broken for a month during the Linux 5.11 kernel cycle. That was fixed but since then another regression came to light that had been affecting all IA-64 hardware since a patch was merged back in October. A fix for that latest regression has landed while in the process now marking the Itanium architecture as orphaned. 

    Last year when converting the Itanium architecture code to use the legacy timer tick, that ended up regressing the architecture support. That regression broke the IA-64 code and led to RCU stall errors and a fast system clock. The precise cause of that regression wasn't figured out due to lack of hardware access but the patch at least fixes the support. 

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Linus Torvalds sounds the death knell for Linux Itanium support

Submitted by Rianne Schestowitz on Friday 29th of January 2021 12:10:33 PM.
  • Linus Torvalds sounds the death knell for Linux Itanium support

    Linus Torvalds, the principal developer of Linux, has unveiled a patch marking the code for the Intel Itanium as “Orphaned”.

    While Intel formally discontinued the Itanium series of processors almost two years ago, the architecture is still supported by the Linux kernel. However, along with a fix for an issue with the architecture, Torvalds noted that it’s about time the kernel developers focused their efforts elsewhere.

'It's dead, Jim': Torvalds marks Intel Itanium....

Submitted by Roy Schestowitz on Tuesday 2nd of February 2021 03:56:01 PM.
  • 'It's dead, Jim': Torvalds marks Intel Itanium processors as orphaned in Linux kernel

    The Linux kernel will no longer support Intel Itanium processors following a decision by Linus Torvalds to merge a patch marking the architecture as orphaned.

    "HPE no longer accepts orders for new Itanium hardware, and Intel stopped accepting orders a year ago," said Torvalds in a comment on the code. "While Intel is still officially shipping chips until July 29, 2021, it's unlikely that any such orders actually exist. It's dead, Jim."

    Itanium was jointly developed by HP and Intel, and is used in HP Integrity servers. When it was under development in the '90s, it was intended to be the dominant future architecture for enterprise computing and killed off competing efforts such as DEC Alpha. It was supported by Windows NT, HP-UX, Linux, OpenVMS, Solaris and others.

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