On Thu, 27 Mar 2008, Avi Kivity wrote:
Applied, but perhaps a patch to linux to avoid reads to write-only registers
is needed as well.
Linux performs reads to all registers written including this one
deliberately using an RMW cycle to avoid triggering an erratum in some
early Pentium
Andi Kleen wrote:
Maciej W. Rozycki [EMAIL PROTECTED] writes:
Linux performs reads to all registers written including this one
deliberately using an RMW cycle to avoid triggering an erratum in some
early Pentium integrated APICs. Obviously it does not matter for most of
the world as
On Thu, 27 Mar 2008, Andi Kleen wrote:
It would be quite possible to make the cycle conditional on a
cpufeatures.h quirk flag that is only set on P5. Just would need to
out of line a few functions to avoid code bloat.
Exactly what I suggested at the LKML -- you could even go down to a list
