Re: kern/54560 (PXE netboot regression)

[manu%netbsd.org@localhost (Emmanuel Dreyfus)]

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

From: manu%netbsd.org@localhost (Emmanuel Dreyfus)
To: gnats-bugs%netbsd.org@localhost, gnats-admin%netbsd.org@localhost, netbsd-bugs%netbsd.org@localhost,
        gson%gson.org@localhost (Andreas Gustafsson)
Cc: 
Subject: Re: kern/54560 (PXE netboot regression)
Date: Tue, 24 Sep 2019 01:28:25 +0200

 Andreas Gustafsson <gson%NetBSD.org@localhost> 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
 
 CPPFLAGS+= -DNO_GPT 
 CPPFLAGS+= -DNO_RAIDFRAME
 
 You will get a pxeboot_ia32.bin below 64 kB with multiboot 2 enabled. If
 that boots, then we have our answer.
 
 -- 
 Emmanuel Dreyfus
 http://hcpnet.free.fr/pubz
 manu%netbsd.org@localhost