Re: [PATCH 0/4] Handle memmap and mem kernel options in boot stage kaslr

From	Baoquan He <bhe@redhat.com>
Newsgroups	linux.kernel
Subject	Re: [PATCH 0/4] Handle memmap and mem kernel options in boot stage kaslr
Date	2017-04-24 04:50 +0200
Message-ID	<tzCeB-HU-1@gated-at.bofh.it> (permalink)
References	<txf2N-1br-9@gated-at.bofh.it> <txxVL-4zJ-13@gated-at.bofh.it> <txzEd-5Dd-5@gated-at.bofh.it> <txATE-6he-17@gated-at.bofh.it>
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On 04/18/17 at 02:51pm, Ingo Molnar wrote:
> 
> * Baoquan He <bhe@redhat.com> wrote:
> 
> > On 04/18/17 at 11:47am, Ingo Molnar wrote:
> > > I ported this series to tip:x86/boot (please post future versions against that), 
> > > and beyond a trivial conflict with e820entry => e820_entry, it fails to build on 
> > > 32-bit allmodconfig:
> > > 
> > >   ld: -r and -shared may not be used together
> > >   scripts/Makefile.build:294: recipe for target 'arch/x86/boot/compressed/kaslr.o' failed
> > > 
> > > ... which could be due to bad relocations, but I've not dug any further.
> > 
> > Thanks, Ingo!
> > 
> > I will find a x86_32 system to try allmodconfig.
> 
> No need, on a 64-bit system just do:
> 
> 	make ARCH=i386 allmodconfig

Those EXPORT_SYMBOL(sym) in lib/ctype.c|cmdline.c caused this build
failure. I added below code to skip linux/export.h including, it works.
However I haven't found out why EXPORT_SYMBOL in boot stage caused the
failure.

#define _LINUX_EXPORT_H
#define EXPORT_SYMBOL(sym)

> 
> and build the kernel the regular way.
> 
> Thanks,
> 
> 	Ingo

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[PATCH 0/4] Handle memmap and mem kernel options in boot stage kaslr Baoquan He <bhe@redhat.com> - 2017-04-17 15:40 +0200
  Re: [PATCH 0/4] Handle memmap and mem kernel options in boot stage  kaslr Ingo Molnar <mingo@kernel.org> - 2017-04-18 11:50 +0200
    Re: [PATCH 0/4] Handle memmap and mem kernel options in boot stage  kaslr Baoquan He <bhe@redhat.com> - 2017-04-18 13:40 +0200
      Re: [PATCH 0/4] Handle memmap and mem kernel options in boot stage  kaslr Ingo Molnar <mingo@kernel.org> - 2017-04-18 15:00 +0200
        Re: [PATCH 0/4] Handle memmap and mem kernel options in boot stage  kaslr Baoquan He <bhe@redhat.com> - 2017-04-19 02:10 +0200
        Re: [PATCH 0/4] Handle memmap and mem kernel options in boot stage  kaslr Baoquan He <bhe@redhat.com> - 2017-04-20 16:10 +0200
        Re: [PATCH 0/4] Handle memmap and mem kernel options in boot stage  kaslr Baoquan He <bhe@redhat.com> - 2017-04-24 04:50 +0200

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