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Re: kern/54560 (PXE netboot regression)

The following reply was made to PR kern/54560; it has been noted by GNATS.

From: (Emmanuel Dreyfus)
To:,,, (Andreas Gustafsson)
Subject: Re: kern/54560 (PXE netboot regression)
Date: Tue, 24 Sep 2019 01:28:25 +0200

 Andreas Gustafsson <> wrote:
 >  With the patch, the system netboots successfully (my first try failed,
 >  but that was probably caused by an unrelated issue).
 I am not sure there are real multiboot + PXE usage. Perhaps we can just
 disable multiboot 2 for PXE without looking further into what the
 problem actually is.
 In case you ar ecurious and want to look into it further, my first hunch
 is that the multiboot 2 code increases the pxeboot_ia32.bin file beyond
 64kB. You can easily test if this is the problem, remove CPPFLAGS+=
 -DNO_MULTIBOOT2 and instead add
 You will get a pxeboot_ia32.bin below 64 kB with multiboot 2 enabled. If
 that boots, then we have our answer.
 Emmanuel Dreyfus

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