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Linux X86/x86_64 Will Now Always Reserve the First 1MB of RAM

posted by Fnord666 on Sunday June 06 2021, @05:51PM   Printer-friendly
from the 640k-is-more-memory-than-anyone-will-ever-need dept.

upstart writes in with an IRC submission for Runaway1956:

Linux x86/x86_64 Will Now Always Reserve The First 1MB Of RAM - Phoronix:

The Linux x86/x86_64 kernel code already had logic in place for reserving portions of the first 1MB of RAM to avoid the BIOS or kernel potentially clobbering that space among other reasons while now Linux 5.13 is doing away with that "wankery" and will just unconditionally always reserve the first 1MB of RAM.

[...] The motivation now for Linux 5.13 in getting that 1MB unconditional reservation in place for Linux x86/x86_64 stems from a bug report around an AMD Ryzen system being unbootable on Linux 5.13 since the change to consolidate their early memory reservations handling. Just unconditionally doing the first 1MB makes things much simpler to handle.

The change was sent in this morning as part of x86/urgent. "Do away with all the wankery of reserving X amount of memory in the first megabyte to prevent BIOS corrupting it and simply and unconditionally reserve the whole first megabyte."

no more wankery

Original Submission

 
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  • (Score: 1, Funny) by Anonymous Coward on Sunday June 06 2021, @07:45PM (7 children)

    by Anonymous Coward on Sunday June 06 2021, @07:45PM (#1142453)

    Pfft when I were a lad, we had 64k and we ENJOYED it. Luxury.

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  • (Score: 0) by Anonymous Coward on Sunday June 06 2021, @08:26PM (3 children)

    by Anonymous Coward on Sunday June 06 2021, @08:26PM (#1142461)

    My first computer had 1k of RAM and storage was to cassette tape at 300 baud.

    • (Score: 1, Funny) by Anonymous Coward on Sunday June 06 2021, @08:35PM (2 children)

      by Anonymous Coward on Sunday June 06 2021, @08:35PM (#1142466)

      You kids had it easy.

      • (Score: 1, Funny) by Anonymous Coward on Monday June 07 2021, @03:01AM (1 child)

        by Anonymous Coward on Monday June 07 2021, @03:01AM (#1142609)

        Yeah, we had punch card operated looms, and our parents called us lazy asses (they used manual looms).

  • (Score: 3, Funny) by Thexalon on Monday June 07 2021, @03:17AM (2 children)

    by Thexalon (636) on Monday June 07 2021, @03:17AM (#1142617)

    Of course, we had it tough: We had to get up at 2 o'clock every morning, half-an-hour before we went to bed, eat a lump of gray goo from a blown-out capacitor, calculate 400 instructions perfectly on bits of scrap paper, solder 15 chips in place, and when we got home our computers would kill us and dance around on our graves singing Daisy, Daisy.

    --
    The only thing that stops a bad guy with a compiler is a good guy with a compiler.

    • (Score: 3, Funny) by Eratosthenes on Monday June 07 2021, @05:45AM (1 child)

      by Eratosthenes (13959) on Monday June 07 2021, @05:45AM (#1142646) Journal

      Was thinking of composing a "Yorkshiremen" dialogue, but now I just stand in awe of Thexalon. Daisy! In Space, no one can hear.

      • (Score: 0) by Anonymous Coward on Monday June 07 2021, @06:26AM

        by Anonymous Coward on Monday June 07 2021, @06:26AM (#1142660)

        Will I dream?