Re: [mmotm:master 289/396] undefined reference to `crypto_alloc_shash'

[Vivek Goyal <vgoyal@redhat.com>]

On Thu, Jul 03, 2014 at 07:55:06AM +0800, kbuild test robot wrote:
> tree:   git://git.cmpxchg.org/linux-mmotm.git master
> head:   82b56f797fa200a5e9feac3a93cb6496909b9670
> commit: 025d75374c9c08274f60da5802381a8ef7490388 [289/396] kexec: load and relocate purgatory at kernel load time
> config: make ARCH=s390 allnoconfig
> 
> All error/warnings:
> 
>    kernel/built-in.o: In function `sys_kexec_file_load':
>    (.text+0x32314): undefined reference to `crypto_shash_final'
>    kernel/built-in.o: In function `sys_kexec_file_load':
>    (.text+0x32328): undefined reference to `crypto_shash_update'
>    kernel/built-in.o: In function `sys_kexec_file_load':
> >> (.text+0x32338): undefined reference to `crypto_alloc_shash'

Hi,

Now generic kexec implementation requires CRYPTO and CRYPTI_SHA256. Hence
I select these in arch/x86/Kconfig.

config KEXEC
        bool "kexec system call"
        select BUILD_BIN2C
        select CRYPTO
        select CRYPTO_SHA256

But I realize that I did not do it for other arches which have KEXEC
defined. And that will lead to failure on other arches.

I will write a patch now and create this additional dependency in
all other arch Kconfig files which support KEXEC.

Thanks
Vivek

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