On 14/01/2019 11:39, Jan Beulich wrote:
> First of all a PCLMULQDQ dependency was missing entirely. Add it as well
> as AESNI and SHA to SSE2, as all of them act on vectors of integers,
> whereas plain SSE supports vectors of single precision floats only. This
> is in line with how e.g. binutils and gcc treat them.
>
> Signed-off-by: Jan Beulich <jbeul...@suse.com>
> ---
> TBD: On the same basis, SSE3, SSSE3 and SSE4A should probably also
> depend on SSE2 rather than SSE. In fact making this a chain SSE -> SSE2
> -> SSE3 -> { SSSE3, SSE4A } would probably be best, and get us in line
> with both binutils and gcc. But I think I did suggest so when the
> dependencies were introduced, and this wasn't liked for a reason I
> forgot.While all of this is true, there is a comment in context which explains why the dependences are they way they are. Providing a guest with SSE, no SSE2, and PCLMULDQ/AESNI/SHA will allow these latter instruction groups to function correctly. ~Andrew _______________________________________________ Xen-devel mailing list Xen-devel@lists.xenproject.org https://lists.xenproject.org/mailman/listinfo/xen-devel
