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

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


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  • (Score: 2) by DannyB on Monday June 07 2021, @06:54PM (2 children)

    by DannyB (5839) Subscriber Badge on Monday June 07 2021, @06:54PM (#1142849) Journal

    The spread of more and more stupidity is likely to prevent this from occurring.

    It's a race. How much longer can our technological civilization survive. Suppose China and what's left of the US turn space into a useless wreck. Just one example.

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  • (Score: 2) by JoeMerchant on Monday June 07 2021, @07:56PM (1 child)

    by JoeMerchant (3937) on Monday June 07 2021, @07:56PM (#1142874)

    Mankind has always had the power to destroy his own civilization, ever since he created a civilization that could be destroyed.

    Sadly, we are now a single globe global civilization, and there's precious little isolation of civilization from any systemic meltdowns.

    At least we've got a nice simple policy protecting the first Meg of RAM now, though. That should help a lot ;-)

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    • (Score: 2) by DannyB on Monday June 07 2021, @08:09PM

      by DannyB (5839) Subscriber Badge on Monday June 07 2021, @08:09PM (#1142880) Journal

      we've got a nice simple policy protecting the first Meg of RAM now

      Will China abide by that policy?

      Russia?

      systemd (once it absorbs the kernel) ?

      It's the tragically of the commons.

      --
      People today are educated enough to repeat what they are taught but not to question what they are taught.