[PATCH v7 2/2] Documentation, x86, apic, kexec: Add disable_cpu_apicid kernel parameter
vgoyal at redhat.com
Wed Nov 27 10:10:56 EST 2013
On Wed, Nov 27, 2013 at 11:00:53AM +0900, HATAYAMA Daisuke wrote:
> Add disable_cpu_apicid kernel parameter to disable the CPU with the
> specified number of initial APIC ID, mostly used for the kdump 2nd
> kernel to disable BSP to wake up multiple CPUs without causing system
> reset or hang due to sending INIT from AP to BSP.
> Signed-off-by: HATAYAMA Daisuke <d.hatayama at jp.fujitsu.com>
I guess you don't require a separate patch for documentation. Just merge
it with previous patch. So this becomes a single patch fix and not a
> Documentation/kernel-parameters.txt | 9 +++++++++
> 1 file changed, 9 insertions(+)
> 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]
> + Format: <int>
> + The number of initial APIC ID for the
> + corresponding CPU to be disabled at boot,
> + mostly used for the kdump 2nd kernel to
> + disable BSP to wake up multiple CPUs without
> + causing system reset or hang due to sending
> + INIT from AP to BSP.
> disable_ddw [PPC/PSERIES]
> Disable Dynamic DMA Window support. Use this if
> to workaround buggy firmware.
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