Re: [kvm-devel] [PATCH] KVM - Fix rmode_tss_base declaration

Avi Kivity
2007-06-10T07:36:01Z

Jeff Dike wrote:
> On Thu, Jun 07, 2007 at 08:09:48AM +0300, Avi Kivity wrote:
>
>> Some extra logic is needed on i386 with >= 4GB. Current code will
>> wraparound since gfn_t is 32-bits long, but casting it to 64-bits is not
>> the answer since the processor will truncate it back to 32 bits (the
>> return value is eventually used as a long in enter_rmode()).
>>
>
> Is it necessary to initialize TR in enter_rmode? I can't see anything
> that says it has any meaning in real mode.
>
>

VT doesn't support real mode. kvm uses virtual-8086 mode to virtualize
real mode. Virtual 8086 mode does require a task state segment.

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