* dcbst instruction
@ 2003-08-11 15:23 Rabeeh Khoury
2003-08-11 15:35 ` Mark Hatle
2003-08-12 1:32 ` Paul Mackerras
0 siblings, 2 replies; 3+ messages in thread
From: Rabeeh Khoury @ 2003-08-11 15:23 UTC (permalink / raw)
To: linuxppc-embedded
Hi All,
I have a question about the PowerPC cache line clean dcbst instruction.
Is this instruction used at all in Linux ?
If used, where ? kernel ? libc ? special builds of user space applications ?
Thanks,
Rabeeh
** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: dcbst instruction
2003-08-11 15:23 dcbst instruction Rabeeh Khoury
@ 2003-08-11 15:35 ` Mark Hatle
2003-08-12 1:32 ` Paul Mackerras
1 sibling, 0 replies; 3+ messages in thread
From: Mark Hatle @ 2003-08-11 15:35 UTC (permalink / raw)
To: Rabeeh Khoury; +Cc: linuxppc-embedded
Rabeeh Khoury wrote:
>
> Hi All,
>
> I have a question about the PowerPC cache line clean dcbst instruction.
> Is this instruction used at all in Linux ?
> If used, where ? kernel ? libc ? special builds of user space
> applications ?
It is used in glibc. I have not seen off the shelf applications using
it, but I wouldn't be surprised if highly optimized apps did attempt to
use it.
As for the kernel, I would assume it's being used.. but a simple grep
should tell you if it is.
--Mark
> Thanks,
> Rabeeh
>
>
>
>
>
** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: dcbst instruction
2003-08-11 15:23 dcbst instruction Rabeeh Khoury
2003-08-11 15:35 ` Mark Hatle
@ 2003-08-12 1:32 ` Paul Mackerras
1 sibling, 0 replies; 3+ messages in thread
From: Paul Mackerras @ 2003-08-12 1:32 UTC (permalink / raw)
To: Rabeeh Khoury; +Cc: linuxppc-embedded
Rabeeh Khoury writes:
> I have a question about the PowerPC cache line clean dcbst instruction.
> Is this instruction used at all in Linux ?
> If used, where ? kernel ? libc ? special builds of user space applications ?
It's used in the kernel and in every program that uses shared
libraries. I would expect that applications such as Java JIT
compilers would use it too.
Paul.
** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/
^ permalink raw reply [flat|nested] 3+ messages in thread
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2003-08-11 15:23 dcbst instruction Rabeeh Khoury
2003-08-11 15:35 ` Mark Hatle
2003-08-12 1:32 ` Paul Mackerras
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