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).
Have
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 normal
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 modulo 64
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 have
to be
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
definition
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 the
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
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
benchmark?
The
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
built using
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 following
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-based
boards.
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,
The following
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 with the patch
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 point
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 the
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, which
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 we made this
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
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