[SeaBIOS] [PATCH] vcpu hotplug: Setup vcpu add/remove infrastructure, including madt bios_info and dsdt

Liu, Jinsong jinsong.liu at intel.com
Thu Jan 28 07:03:55 CET 2010

Kevin O'Connor wrote:
> On Thu, Jan 28, 2010 at 11:16:17AM +0800, Liu, Jinsong wrote:
>> Connor and Gleb,
>> Thanks for comments and suggestions!
>> According to the discussion, I will update my patch as:
>> 1. simplify method 'PRSC' definiation, move 'maxvcpus' to method
>> 'NTFY' so that code is more direct and easy to understand; 
>> 2. remove unnecessary global variable 'madt_csum_addr,
>> madt_lapic0_addr, max_cpus_byte, max_cpus_bit'; 
>> 3. use VAR16FIXED() macro for a hardcode address, change hardcode
>> address from '0xEA000' to '0x514' (same as old BOCHS); 
> VAR16FIXED() is for addresses in the f-segment - for addresses outside
> of the bios code, one can just assign a value to the address.  I don't
> know if 0x514 is used for anything else, but I suppose it's okay if
> BOCHS got away with it.
> -Kevin

So you mean we directly use hardcode address '0x514' for bios_info, which transfer info from madt to dsdt asl? similar as what BOCHS does?


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