[Lguest] [PATCH RFC/RFB] x86_64, i386: interrupt dispatch changes

Ingo Molnar mingo at elte.hu
Thu Nov 6 20:30:20 EST 2008


* H. Peter Anvin <hpa at zytor.com> wrote:

> Ingo Molnar wrote:
>>
>> yes, the accessed bit in the segment descriptor has to be updated 
>> in an atomic transaction: the CPU has to do a MESI coherent 
>> read+compare+write transaction, without damaging other updates to 
>> the 6 bytes segment descriptor.
>
> 8 bytes, rather.

heh, yes of course :-)

	Ingo



More information about the Lguest mailing list