2006/6/6, Matthew Dillon <[EMAIL PROTECTED]>:
:AFAIR the DFly FPU rework allows to use FPU/XMM instructions in their
:kernel without the need to do some manual state preserving (it's done
:...
:
:Bye,
:Alexander.
That actually isn't quite how it works. If the userland had active
FP state
:AFAIR the DFly FPU rework allows to use FPU/XMM instructions in their
:kernel without the need to do some manual state preserving (it's done
:...
:
:Bye,
:Alexander.
That actually isn't quite how it works. If the userland had active
FP state then the kernel still has to save it befor
2006/6/1, Alexander Leidinger <[EMAIL PROTECTED]>:
AFAIR the DFly FPU rework allows to use FPU/XMM instructions in their
kernel without the need to do some manual state preserving (it's done
automatically on demand). So one could use XMM instructions in RAID 5
or crypto parts of the code to test
Quoting Attilio Rao <[EMAIL PROTECTED]> (from Thu, 1 Jun 2006
01:32:12 +0200):
2006/6/1, Bruce Evans <[EMAIL PROTECTED]>:
The new code wouldn't behave much differently under SMP. It just might
be a smaller optimization because more memory pressure for SMP causes
more cache misses for every
On Wed, 31 May 2006, Attilio Rao wrote:
2006/5/31, Suleiman Souhlal <[EMAIL PROTECTED]>:
Nice work. Any chance you could also port it to amd64? :-)
Not in the near future, I think. :P
It is not useful for amd64. An amd64 has enough instruction bandwidth
to saturate the L1 cache using 64-bi
2006/6/1, Bruce Evans <[EMAIL PROTECTED]>:
>> Does that mean it won't work with SMP and PREEMPTION?
>
> Yes it will work (even if I think it needs more testing) but maybe
> would give lesser performances on SMP|PREEMPTION due to too much
> traffic on memory/cache. For this I was planing to use n
2006/5/31, Suleiman Souhlal <[EMAIL PROTECTED]>:
Hello Attilio,
Hello Suleiman,
Nice work. Any chance you could also port it to amd64? :-)
Not in the near future, I think. :P
Does that mean it won't work with SMP and PREEMPTION?
Yes it will work (even if I think it needs more testing) b
Hello Attilio,
Attilio Rao wrote:
Hi,
this is the last release which is rather finished and complete for the
project.
I tested for consistency for a long time and the FPU handling
mechanism seems very robust so as copyin/copyout do.
Nice work. Any chance you could also port it to amd64? :-)
Sorry, but I unforgot one thing so, please, redownload the patch now.
Attilio
2006/5/31, Attilio Rao <[EMAIL PROTECTED]>:
Hi,
this is the last release which is rather finished and complete for the project.
I tested for consistency for a long time and the FPU handling
mechanism seems very robus
9 matches
Mail list logo
