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> --- 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.
