Re: [Xen-devel] [PATCH v1] x86/hvm: Generic instruction re-execution mechanism for execute faults

[Razvan Cojocaru <rcojocaru@xxxxxxxxxxxxxxx>]

On 11/27/18 12:49 PM, Razvan Cojocaru wrote:
> > With a sufficiently complete insn emulator, single-stepping should
> > not be needed at all imo. Granted we're not quite there yet with
> > the emulator, but we've made quite a bit of progress. As before,
> > if there are particular instructions you know of that the emulator
> > doesn't handle yet, please keep pointing these out. Last I know
> > were some AVX move instructions, which have long been
> > implemented.
> True, I haven't seen emulator issues in that respect with staging - the
> emulator appears lately to be sufficiently complete. Thank you very much
> for your help and support - we'll definitely point out unsupported
> instructions if we spot some again.
We've come accross a new instruction that the emulator can't handle in 
Xen 4.13-unstable today:
vpmaddwd xmm4,xmm4,XMMWORD PTR ds:0x513fbb20

Perhaps there are plans for this to go into the emulator as well?


Thanks,
Razvan

_______________________________________________
Xen-devel mailing list
Xen-devel@xxxxxxxxxxxxxxxxxxxx
https://lists.xenproject.org/mailman/listinfo/xen-devel