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Re: [Xen-devel] [PATCH v2] x86emul: defer rIP-relative address calculation



On 08/12/16 11:40, Jan Beulich wrote:
> By putting it after all instruction fetching has been done, we can both
> simplify the existing handling of immediate operands and take care of
> any future instructions allowing rIP-relative operands and getting
> additional bytes fetched in x86_decode_*() (the current cases of extra
> bytes getting fetched there are only for operands without ModR/M bytes,
> or with them only allowing their register forms).
>
> Similarly the new placement of truncate_ea() will take care of any
> future cases of non-standard memory operands (the one existing case -
> opcodes A0...A3 - are fine with and without this, as they fetch an
> ad_bytes sized unsigned address anyway).
>
> Signed-off-by: Jan Beulich <jbeulich@xxxxxxxx>

Reviewed-by: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>

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