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Re: [Qemu-devel] Patch: ltr for x86_64 should check the upper descriptor
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From: |
Bernhard Kauer |
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Subject: |
Re: [Qemu-devel] Patch: ltr for x86_64 should check the upper descriptor type |
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Date: |
Mon, 26 Mar 2007 16:04:10 +0200 |
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User-agent: |
Mutt/1.5.13 (2006-08-11) |
On Mon, Mar 26, 2007 at 01:54:43PM +0000, Julian Seward wrote:
>
> Does this fix some specific bug you encountered?
I have some code here that runs on Qemu but not on real hardware
due to this missing check.
Bernhard
> On Monday 26 March 2007 14:53, Bernhard Kauer wrote:
> > The Intel manual states for LTR and 64-Bit Exceptions:
> >
> > #GP(selector)
> > If the descriptor type of the upper 8-byte of the 16-byte descriptor
> > is non-zero.
> >
> > Qemu currently does not check this. The attached patch fixes the bug.