[PATCH] kexec/ppc64: leverage kexec_file_load support

[Hari Bathini]

On Monday 26 March 2018 12:49 PM, Simon Horman wrote:
> On Mon, Mar 19, 2018 at 03:57:11PM -0300, Thiago Jung Bauermann wrote:
>> Hello Hari,
>>
>> Hari Bathini <hbathini at linux.vnet.ibm.com> writes:
>>
>>> PPC64 kernel now supports kexec_file_load system call. Leverage it by
>>> enabling that support here. Note that loading crash kernel with this
>>> system call is not yet supported in the kernel and trying to load one
>>> will fail with '-ENOTSUPP' error.
>>>
>>> Signed-off-by: Hari Bathini <hbathini at linux.vnet.ibm.com>
>>> ---
>>>   kexec/arch/ppc64/kexec-elf-ppc64.c |   84 ++++++++++++++++++++++++++++++++++++
>>>   kexec/kexec-syscall.h              |    3 +
>>>   2 files changed, 87 insertions(+)
>> Thanks for implementing this! Looks good to me, just one nit below.
>> Regardless of that:
>>
>> Reviewed-by: Thiago Jung Bauermann <bauerman at linux.vnet.ibm.com>

Thanks for reviewing..

>>> diff --git a/kexec/arch/ppc64/kexec-elf-ppc64.c b/kexec/arch/ppc64/kexec-elf-ppc64.c
>>> index ddd3de8..2742cd6 100644
>>> --- a/kexec/arch/ppc64/kexec-elf-ppc64.c
>>> +++ b/kexec/arch/ppc64/kexec-elf-ppc64.c
>> <snip>
>>
>>> @@ -117,6 +196,9 @@ int elf_ppc64_load(int argc, char **argv, const char *buf, off_t len,
>>>   	uint32_t my_run_at_load;
>>>   	unsigned int slave_code[256/sizeof (unsigned int)], master_entry;
>>>
>>> +	if (info->file_mode)
>>> +		return elf_ppc64_load_file(argc, argv, info);
>>> +
>>>   	/* See options.h -- add any more there, too. */
>>>   	static const struct option options[] = {
>>>   		KEXEC_ARCH_OPTIONS
>> This is placing executable code between variable declarations. It may be
>> fine for gcc but it's more idiomatic C to put it after all variable
>> declarations. But perhaps the kexec-tools style is fine with it?
> I'd rather we avoid proliferating this style in the kexec code.
> Hari, could you respin this patch?
>

Posted v2 with the necessary change...

Thanks
Hari