Re: [PATCH] KVM - Fix rmode_tss_base declaration

Jeff Dike
2007-06-08T19:44:41Z

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.

And if not, would not the guest be responsible for finding room for the
TSS?

Jeff

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Work email - jdike at linux dot intel dot com