Am 28.09.2014 um 21:15 schrieb drago01:
On Sun, Sep 28, 2014 at 8:17 PM, Reindl Harald
> Am 28.09.2014 um 20:13 schrieb Carlos O'Donell:
>> On 09/28/2014 01:24 PM, drago01 wrote:
>>> On Sun, Sep 28, 2014 at 6:49 PM, Carlos O'Donell
>>>> On 09/26/2014 02:34 PM, Carlos O'Donell wrote:
>>>>> Testers wanted immediately for:
>>>> For FC21 was missed a case where TSX was being used and had
>>>> to push one more update -5 to cover this case.
>>> Does that update still make sense given that the kernel / dracut
>>> update enables early microcode loading?
>> What about the case where the user runs a custom kernel?
> then he needs to build it right
> don't get me wrong but you can't seriously disable TSX
> completly because a *possible* out-of-distribution kernel
Well the microcode update *does* disable TSX (so that only applies to
new yet to be introduced cpus) ...
that's the point of what i said:
* 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
* if kernel loads microcode early and you have hardware supporting
TSX and glibc also supports it -> fine you hav ethe feature
it would be a big mistake to disable completly TSX forever and
if not forever how would someone decide when enable it - the only
sane way is to get microcode applid as early as possible and
after that use the CPU feautures which are enabled
but yeah if you build your own kernel you should try to be
as close to possible to the distro config
exactly what i said