On Mon, Sep 29, 2014 at 06:39:01AM +0200, Florian Weimer wrote:
On 09/28/2014 09:25 PM, Reindl Harald wrote:
>* you buy a new CPU in 2 months
>* the microcode don't disable TSX there
>* if glibc now is built without TSX support you gain nothing from new hardware
Or the fixed TSX implementation is slightly different, and glibc breaks
again. We don't know. Maybe even Intel doesn't know.
Furthermore, it is very unlikely to be 2 months, from the info
provided/leaked so far, it seems that Broadwell-E/Broadwell-EP are the
first CPUs to have fixed TSX again, and Haswell-E has only been released
a month ago. Note, Haswell-E usually seems to have TSX disabled already in
BIOS, so microcode_ctl doesn't do anything regarding TSX there.