Re: [PATCH 00/18] prevent bounds-check bypass via speculative execution

Arjan van de Ven
2018-01-08T13:33:52Z

On 1/7/2018 8:49 PM, Bart Van Assche wrote:

> Thank you Dan for all the work you have done on this patch series. Before
> I start reviewing the patches themselves I would like to know whether or
> not the issue that is addressed by this patch series could also be addressed
> by AMD and Intel by modifying the CPU microcode. And if this can be
> addressed by modifying the CPU microcode, will accepting this patch series
> reduce the pressure on CPU manufacturers to provide such an update?

unfortunately these issues cannot be addressed in a microcode update;
these specific issues are very fundamental to the concept of speculation.

turning off speculation is not an option ....