Bug 656452 – Verify sparc kernels are less than 7.2MB

• Status: CONFIRMED
• Product: Gentoo Hosted Projects

[Description Robin Johnson 2018-05-24 17:18:28 UTC]

Per jmorgan, sparc64 will only boot kernels that are under 7.2MB.
Genkernel should check this.

[Comment 1 Richard Yao (RETIRED) 2018-05-28 02:40:05 UTC]

A 7.2MB limitation seems bizarre. Is that a limitation of openfirmware? Is the initramfs itself included in this limit?

[Comment 2 Ben Kohler 2021-03-24 14:22:32 UTC]

I'm not sure this is really correct, catbus is currently booted to a kernel that is ~14MB, and my sparc box is booted to a kernel around 10MB.

Both are using grub, and both are booting uncompressed kernels because of a memory limitation at boot that prevents proper decompression.

These limits are probably specific to certain generations of sparc hw, are we sure genkernel should be in charge of this?

[Comment 3 Valtteri Koskivuori 2024-01-31 07:25:47 UTC]

Created attachment 883755 [details]
Serial output of the OOM kernel panic I'm observing at startup.

[Comment 4 Valtteri Koskivuori 2024-01-31 07:27:58 UTC]

See attached, possibly related? I observe that output on serial when trying to boot the latest install-sparc64-minimal-20230904T100154Z.iso on my Sun Ultra 5 (UltraSPARC-IIi @ 270MHz, 128MB of RAM).
I noted that the kernel image appears to be ~10.9MB in size on there.