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SubjectRe: [PATCH v9] x86, apic, kexec, Documentation: Add disable_cpu_apic kernel parameter
(2013/12/04 0:25), Vivek Goyal wrote:
> On Tue, Dec 03, 2013 at 10:32:26AM +0900, HATAYAMA Daisuke wrote:
>
> [..]
>>
>> diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt
>> index 50680a5..dd77bec 100644
>> --- a/Documentation/kernel-parameters.txt
>> +++ b/Documentation/kernel-parameters.txt
>> @@ -774,6 +774,15 @@ bytes respectively. Such letter suffixes can also be entirely omitted.
>> disable= [IPV6]
>> See Documentation/networking/ipv6.txt.
>>
>> + disable_cpu_apicid= [X86,APIC,KEXEC,SMP]
>
> Hi Hatayama,
>
> We are almost there. A minor nit. Why have we specified KEXEC here. This
> parameter disabled_cpu_apicid does not seem to dependon CONFIG_KEXEC?
>
> Jerry, this patch looks good to me. Does it work on your system?
>

Because primary user for the option is currently kexec/kdump only.

I referred to acpi_rsdp description:

acpi_rsdp= [ACPI,EFI,KEXEC]
Pass the RSDP address to the kernel, mostly used
on machines running EFI runtime service to boot the
second kernel for kdump.

--
Thanks.
HATAYAMA, Daisuke



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