On 28/08/2020 13:38, Martin Gregorie wrote:
> I'm really disapointed that there hasn't been more work done on both
> hardware as OS design to make cross-process interference impossible and
> to properly implement hardware protection rings to stop application-level
> code clobbering the OS and the OS from clobbering to low-level drivers.

Problem is look-ahead caching

Modern processors use it to gain speed, but it blows away process
compartmentalisation.

--
     “I know that most men, including those at ease with problems of the
greatest complexity, can seldom accept even the simplest and most
obvious truth if it be such as would oblige them to admit the falsity of
conclusions which they have delighted in explaining to colleagues, which
they have proudly taught to others, and which they have woven, thread by
thread, into the fabric of their lives.”

     ― Leo Tolstoy

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