RE: APIC version

[Nakajima, Jun]

The entries in acpi_version[] are indexed by the APIC id, not smp_processor_id(). So you can overwrite acpi_version[] for a different processor.

Jun

> -----Original Message-----
> From: Protasevich, Natalie [mailto:[e-mail]]
> Sent: Monday, January 13, 2003 10:44 AM
> To: 'Martin J. Bligh'; Pallipadi, Venkatesh
> Cc: 'William Lee Irwin III'; Nakajima, Jun; 'Christoph Hellwig'; 'James
> Cleverdon'; 'Linux Kernel'; Protasevich, Natalie
> Subject: APIC version
> 
> I have a little patch here for the APIC version.
> Without it, I get version 0x10 instead of 0x14 for Fosters/Gallatins
> (booting with ACPI):
> 
> --- mpparse.c.org	2003-01-13 11:32:18.000000000 -0700
> +++ mpparse.c	2003-01-13 11:33:26.000000000 -0700
> @@ -773,6 +773,8 @@
>  	if (boot_cpu_physical_apicid == -1U)
>  		boot_cpu_physical_apicid = GET_APIC_ID(apic_read(APIC_ID));
> 
> +	apic_version[smp_processor_id()] =
> GET_APIC_VERSION(apic_read(APIC_LVR));
> +
>  	Dprintk("Boot CPU = %d\n", boot_cpu_physical_apicid);
>  }
> 
> @@ -795,7 +797,7 @@
> 
>  	processor.mpc_type = MP_PROCESSOR;
>  	processor.mpc_apicid = id;
> -	processor.mpc_apicver = 0x10; /* TBD: lapic version */
> +	processor.mpc_apicver = apic_version[smp_processor_id()];
>  	processor.mpc_cpuflag = (enabled ? CPU_ENABLED : 0);
>  	processor.mpc_cpuflag |= (boot_cpu ? CPU_BOOTPROCESSOR : 0);
>  	processor.mpc_cpufeature = (boot_cpu_data.x86 << 8) |
> 
> 
> It seems to work OK for me, although you may find some implications...
> Anyway -
> 
> Thanks,
> 
> --Natalie