Re: [PATCH v2 2/6] powerpc/kexec_file: Add KEXEC_SIG support.

[Nayna <nayna@linux.vnet.ibm.com>]

On 12/9/21 04:21, Michal Suchánek wrote:
> Hello,
Hi,
> On Wed, Dec 08, 2021 at 08:51:47PM -0500, Nayna wrote:
>> On 11/25/21 13:02, Michal Suchanek wrote:
>>> Copy the code from s390x
>>>
>>> Signed-off-by: Michal Suchanek<msuchanek@suse.de>
>>> ---
>>>    arch/powerpc/Kconfig        | 11 +++++++++++
>>>    arch/powerpc/kexec/elf_64.c | 36 ++++++++++++++++++++++++++++++++++++
>>>    2 files changed, 47 insertions(+)
>>>
>>> diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig
>>> index ac0c515552fd..ecc1227a77f1 100644
>>> --- a/arch/powerpc/Kconfig
>>> +++ b/arch/powerpc/Kconfig
>>> @@ -561,6 +561,17 @@ config KEXEC_FILE
>>>    config ARCH_HAS_KEXEC_PURGATORY
>>>    	def_bool KEXEC_FILE
>>>
>>> +config KEXEC_SIG
>>> +	bool "Verify kernel signature during kexec_file_load() syscall"
>>> +	depends on KEXEC_FILE && MODULE_SIG_FORMAT
>> After manually applying the patch, the build is failing with the following
>> error:
>>
>> build failed with error "arch/powerpc/kexec/elf_64.o: In function
>> `elf64_verify_sig':
>> /root/kernel/linus/linux/arch/powerpc/kexec/elf_64.c:160: undefined
>> reference to `verify_appended_signature'"
> This patch does not add call to verify_appended_signature.
>
> Maybe you applied the following patch as well?

Yes, I tried build after applying all the patches.

Thanks & Regards,

     - Nayna