On 15/03/2019 10:47, Jan Beulich wrote:
> @@ -9312,7 +9386,8 @@ x86_emulate(
>
> if ( ea.type == OP_MEM )
> {
> - rc = ops->write(ea.mem.seg, ea.mem.off, mmvalp, 8 << vex.l,
> ctxt);
> + rc = ops->write(ea.mem.seg, truncate_ea(ea.mem.off + first_byte),
> + (void *)mmvalp + first_byte, op_bytes, ctxt);
> if ( rc != X86EMUL_OKAY )
> {
> asm volatile ( "ldmxcsr %0" :: "m" (mxcsr) );
This hunk doesn't appear to fit with the rest of the patch, because it
isn't the first use of first_byte.
Have we been subtly broken before?
~Andrew
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