Messages in this thread | | | Date | Wed, 04 Dec 2013 12:08:22 +0900 | From | HATAYAMA Daisuke <> | Subject | Re: [PATCH v9] x86, apic, kexec, Documentation: Add disable_cpu_apic kernel parameter |
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(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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