Re: KVM: x86: Push potential exception error code on task switches

[Avi Kivity <avi@redhat.com>]

On 04/14/2010 04:07 PM, Avi Kivity wrote:
> On 04/14/2010 03:58 PM, Jan Kiszka wrote:
>>
>>> The TSS descriptor (gate doesn't have a size).  But isn't it 
>>> possible to
>>> have a 32-bit TSS with a 16-bit CS/SS?
>> Might be possible, but will cause troubles as the spec says:
>>
>> "The error code is pushed on the stack as a doubleword or word
>> (depending on the default interrupt, trap, or task gate size)."
>
> My guess is that this is an error and that the 32-bitness of a TSS 
> only refers to the format of the TSS, and has nothing to do with the 
> code that actually runs.  I'll ask Intel about it.  Meanwhile this can 
> be applied, if there's a problem with 16-bit exception handlers 
> running through a 32-bit task referenced by a task gate in the IDT, it 
> can be fixed later.
>

I meant, after Gleb's concerns are addressed.

-- 
error compiling committee.c: too many arguments to function