Hello,
The following patch adds support for 256KB PAGE_SIZE on ppc44x-based boards.
The applications to be run on the kernel with 256KB PAGE_SIZE have to be
built using the modified version of binutils, where the MAXPAGESIZE
definition is set to 0x4 (as opposite to standard 0x1).
S
On Thu, 2007-10-18 at 11:08 +0400, Yuri Tikhonov wrote:
> Hello,
>
> The following patch adds support for 256KB PAGE_SIZE on ppc44x-based boards.
> The applications to be run on the kernel with 256KB PAGE_SIZE have to be
> built using the modified version of binutils, where the MAXPAGESIZE
>
It has turned out that my mailer had corrupted my previous message (thanks
Wolfgang Denk for pointing this). So if you'd like to apply the patch without
the
conflicts please use the version of the patch in this mail.
The following patch adds support for 256KB PAGE_SIZE on ppc44x-based boards.
On Thu, 2007-10-18 at 05:44 -0500, Josh Boyer wrote:
> On Thu, 2007-10-18 at 11:08 +0400, Yuri Tikhonov wrote:
> > Hello,
> >
> > The following patch adds support for 256KB PAGE_SIZE on ppc44x-based
> > boards.
> > The applications to be run on the kernel with 256KB PAGE_SIZE have to be
> >
On Thu, 2007-10-18 at 15:00 +0400, Yuri Tikhonov wrote:
> It has turned out that my mailer had corrupted my previous message (thanks
> Wolfgang Denk for pointing this). So if you'd like to apply the patch without
> the
> conflicts please use the version of the patch in this mail.
>
> The follow
On Thu, 18 Oct 2007 21:45:14 +1000
Benjamin Herrenschmidt <[EMAIL PROTECTED]> wrote:
>
> On Thu, 2007-10-18 at 05:44 -0500, Josh Boyer wrote:
> > On Thu, 2007-10-18 at 11:08 +0400, Yuri Tikhonov wrote:
> > > Hello,
> > >
> > > The following patch adds support for 256KB PAGE_SIZE on ppc44x-base
On Thu, 2007-10-18 at 07:01 -0500, Josh Boyer wrote:
> On Thu, 18 Oct 2007 21:45:14 +1000
> Benjamin Herrenschmidt <[EMAIL PROTECTED]> wrote:
>
> >
> > On Thu, 2007-10-18 at 05:44 -0500, Josh Boyer wrote:
> > > On Thu, 2007-10-18 at 11:08 +0400, Yuri Tikhonov wrote:
> > > > Hello,
> > > >
> >
On Thursday 18 October 2007 14:44, you wrote:
> Sorry, this is against arch/ppc which is bug fix only. New features
> should be done against arch/powerpc.
Understood. The situation here is that the boards, which required these
modifications, have no support in the arch/powerpc branch. So this
On Thursday 18 October 2007 15:47, Benjamin Herrenschmidt wrote:
>
> > Signed-off-by: Pavel Kolesnikov <[EMAIL PROTECTED]>
> > Acked-by: Yuri Tikhonov <[EMAIL PROTECTED]>
>
> Small nit...
>
> You are posting the patch, thus you should be signing off, not ack'ing.
>
> Ack'ing means you agree
On Thursday 18 October 2007 16:12, Benjamin Herrenschmidt wrote:
> > I always reserve the right to change my mind. If something makes sense
> > and the code is decent enough then it might very well be acceptable.
> > Requiring a modified binutils makes me a bit nervous though.
>
> From a kernel
On Thursday 18 October 2007 17:25, Josh Boyer wrote:
> > Understood. The situation here is that the boards, which required these
> > modifications, have no support in the arch/powerpc branch. So this is
> > why we made this in arch/ppc.
>
> Bit of a dilemma then. What board exactly?
These are
On Thu, 18 Oct 2007 17:18:00 +0400
Yuri Tikhonov <[EMAIL PROTECTED]> wrote:
>
> On Thursday 18 October 2007 14:44, you wrote:
> > Sorry, this is against arch/ppc which is bug fix only. New features
> > should be done against arch/powerpc.
>
> Understood. The situation here is that the boards,
On Thu, 18 Oct 2007 17:30:17 +0400
Yuri Tikhonov <[EMAIL PROTECTED]> wrote:
> On Thursday 18 October 2007 17:25, Josh Boyer wrote:
> > > Understood. The situation here is that the boards, which required these
> > > modifications, have no support in the arch/powerpc branch. So this is
> > > why w
Dear Josh,
in message <[EMAIL PROTECTED]> you wrote:
>
> > The following patch adds support for 256KB PAGE_SIZE on ppc44x-based
> > boards.
> > The applications to be run on the kernel with 256KB PAGE_SIZE have to be
> > built using the modified version of binutils, where the MAXPAGESIZE
> >
On Thu, 18 Oct 2007 11:08:19 +0400
Yuri Tikhonov <[EMAIL PROTECTED]> wrote:
>
> Hello,
>
> The following patch adds support for 256KB PAGE_SIZE on ppc44x-based boards.
> The applications to be run on the kernel with 256KB PAGE_SIZE have to be
> built using the modified version of binutils, w
On Oct 19, 2007, at 10:37 AM, Yuri Tikhonov wrote:
> On Friday 19 October 2007 03:21, Paul Mackerras wrote:
>> Have you measured the performance using a 64kB page size? If so, how
>> does it compare with the 256kB page size?
>
> I measured the performance of the sequential full-stripe write
>
On Oct 18, 2007, at 6:21 PM, Paul Mackerras wrote:
> Yuri Tikhonov writes:
>
>> The following patch adds support for 256KB PAGE_SIZE on ppc44x-
>> based boards.
>> The applications to be run on the kernel with 256KB PAGE_SIZE have
>> to be
>> built using the modified version of binutils, where
On Friday 19 October 2007 03:21, Paul Mackerras wrote:
> Have you measured the performance using a 64kB page size? If so, how
> does it compare with the 256kB page size?
I measured the performance of the sequential full-stripe write operations to
a RAID-5 array (P values below are in MB per seco
Yuri Tikhonov writes:
> The following patch adds support for 256KB PAGE_SIZE on ppc44x-based boards.
> The applications to be run on the kernel with 256KB PAGE_SIZE have to be
> built using the modified version of binutils, where the MAXPAGESIZE
> definition is set to 0x4 (as opposite to st
On Friday 19 October 2007 19:48, Kumar Gala wrote:
> > PAGE_SIZE = 4K:
> > P = 66 MBps;
> >
> > PAGE_SIZE = 16K:
> > P = 145 MBps;
> >
> > PAGE_SIZE = 64K:
> > P = 196 MBps;
> >
> > PAGE_SIZE = 256K:
> > P = 217 MBps.
>
> Is this all in kernel space? or is there a user space aspect to the
>
On Friday 19 October 2007 17:24, Kumar Gala wrote:
>
> On Oct 18, 2007, at 6:21 PM, Paul Mackerras wrote:
>
> > Yuri Tikhonov writes:
> >
> >> The following patch adds support for 256KB PAGE_SIZE on ppc44x-
> >> based boards.
> >> The applications to be run on the kernel with 256KB PAGE_SIZE hav
The following patch adds support for 256KB PAGE_SIZE on ppc44x-
based boards.
The applications to be run on the kernel with 256KB PAGE_SIZE have
to be
built using the modified version of binutils, where the MAXPAGESIZE
definition is set to 0x4 (as opposite to stand
> Requiring a modified binutils makes me a bit nervous though.
As long as those binutils modifications are sent upstream, I don't
see the problem? If not, this would be a blocker IMHO.
Segher
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Segher Boessenkool writes:
> If I understand you correctly, the only problem with existing binaries
> is that the ELF segments are aligned to 64kB, but not necessarily to
> 256kB. Couldn't you handle this as a special case, for example by
> mapping the "ends" of such an unaligned segment with nor
Yuri Tikhonov writes:
> No it isn't the violation.
>
> As stated in "System V ABI. PowerPC processor supplement"
> (on which the "Linux Standard Base Core Specification for PPC32"
> is based): " ... Virtual addresses and file offsets for the PowerPC processor
> family
> segments are congruent
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