Re: [fedora-arm] ARMv5 and atomic operations

2012-04-24 Thread Andrew Haley
On 04/23/2012 09:31 PM, Nicolas Pitre wrote: On Mon, 23 Apr 2012, Andrew Haley wrote: On 04/23/2012 06:36 PM, Thomas Meyer wrote: I'm running the Ubuntun 2.6.38 Tegra2 kernel (because of their fbdev support) on top of Fedora 17 armv5el on an Toshiba AC100 Laptop. The rsyslog package crashed

Re: [fedora-arm] ARMv5 and atomic operations

2012-04-24 Thread Nicolas Pitre
On Tue, 24 Apr 2012, Andrew Haley wrote: On 04/23/2012 09:31 PM, Nicolas Pitre wrote: On Mon, 23 Apr 2012, Andrew Haley wrote: On 04/23/2012 06:36 PM, Thomas Meyer wrote: I'm running the Ubuntun 2.6.38 Tegra2 kernel (because of their fbdev support) on top of Fedora 17 armv5el on an

Re: [fedora-arm] ARMv5 and atomic operations

2012-04-24 Thread Andrew Haley
On 04/24/2012 12:39 PM, Nicolas Pitre wrote: On Tue, 24 Apr 2012, Andrew Haley wrote: On 04/23/2012 09:31 PM, Nicolas Pitre wrote: On Mon, 23 Apr 2012, Andrew Haley wrote: On 04/23/2012 06:36 PM, Thomas Meyer wrote: I'm running the Ubuntun 2.6.38 Tegra2 kernel (because of their fbdev

Re: [fedora-arm] ARMv5 and atomic operations

2012-04-24 Thread William Cohen
On 04/24/2012 07:39 AM, Nicolas Pitre wrote: On Tue, 24 Apr 2012, Andrew Haley wrote: On 04/23/2012 09:31 PM, Nicolas Pitre wrote: On Mon, 23 Apr 2012, Andrew Haley wrote: On 04/23/2012 06:36 PM, Thomas Meyer wrote: I'm running the Ubuntun 2.6.38 Tegra2 kernel (because of their fbdev

Re: [fedora-arm] ARMv5 and atomic operations

2012-04-24 Thread Gordan Bobic
William Cohen wrote: On 04/24/2012 07:39 AM, Nicolas Pitre wrote: On Tue, 24 Apr 2012, Andrew Haley wrote: On 04/23/2012 09:31 PM, Nicolas Pitre wrote: On Mon, 23 Apr 2012, Andrew Haley wrote: On 04/23/2012 06:36 PM, Thomas Meyer wrote: I'm running the Ubuntun 2.6.38 Tegra2 kernel

Re: [fedora-arm] ARMv5 and atomic operations

2012-04-24 Thread Ramana Radhakrishnan
On Monday, 23 April 2012, Thomas Meyer wrote: Am Sonntag, den 22.04.2012, 22:34 -0400 schrieb Chris Tyler: On Sun, 2012-04-22 at 18:16 -0700, Brendan Conoboy wrote: As we get closer to having 100% package coverage in F17-ARM we're running into harder build failures due to the limitations

Re: [fedora-arm] ARMv5 and atomic operations

2012-04-24 Thread Nicolas Pitre
On Tue, 24 Apr 2012, Andrew Haley wrote: On 04/24/2012 12:39 PM, Nicolas Pitre wrote: On Tue, 24 Apr 2012, Andrew Haley wrote: On 04/23/2012 09:31 PM, Nicolas Pitre wrote: On Mon, 23 Apr 2012, Andrew Haley wrote: On 04/23/2012 06:36 PM, Thomas Meyer wrote: I'm running the Ubuntun

Re: [fedora-arm] ARMv5 and atomic operations

2012-04-24 Thread Andrew Haley
On 04/24/2012 04:49 PM, Nicolas Pitre wrote: On Tue, 24 Apr 2012, Andrew Haley wrote: On 04/24/2012 12:39 PM, Nicolas Pitre wrote: On Tue, 24 Apr 2012, Andrew Haley wrote: On 04/23/2012 09:31 PM, Nicolas Pitre wrote: On Mon, 23 Apr 2012, Andrew Haley wrote: On 04/23/2012 06:36 PM, Thomas

Re: [fedora-arm] ARMv5 and atomic operations

2012-04-24 Thread Jon Masters
On 04/23/2012 04:31 PM, Nicolas Pitre wrote: On Mon, 23 Apr 2012, Andrew Haley wrote: On 04/23/2012 06:36 PM, Thomas Meyer wrote: I'm running the Ubuntun 2.6.38 Tegra2 kernel (because of their fbdev support) on top of Fedora 17 armv5el on an Toshiba AC100 Laptop. The rsyslog package crashed

Re: [fedora-arm] ARMv5 and atomic operations

2012-04-24 Thread Jon Masters
On 04/24/2012 12:18 PM, Jon Masters wrote: On 04/23/2012 04:31 PM, Nicolas Pitre wrote: On Mon, 23 Apr 2012, Andrew Haley wrote: On 04/23/2012 06:36 PM, Thomas Meyer wrote: I'm running the Ubuntun 2.6.38 Tegra2 kernel (because of their fbdev support) on top of Fedora 17 armv5el on an Toshiba

Re: [fedora-arm] ARMv5 and atomic operations

2012-04-24 Thread Nicolas Pitre
On Tue, 24 Apr 2012, Andrew Haley wrote: On 04/24/2012 05:18 PM, Jon Masters wrote: On 04/23/2012 04:31 PM, Nicolas Pitre wrote: On Mon, 23 Apr 2012, Andrew Haley wrote: On 04/23/2012 06:36 PM, Thomas Meyer wrote: I'm running the Ubuntun 2.6.38 Tegra2 kernel (because of their fbdev

Re: [fedora-arm] ARMv5 and atomic operations

2012-04-24 Thread Nicolas Pitre
On Tue, 24 Apr 2012, Jon Masters wrote: I wasn't going to reply yet just due to lack of time and because Nico covered the kernel helper stuff so well in his earlier posts. But just to add, these kernel helpers have grown a little over time in higher kernel revisions, but there is a mechanism

Re: [fedora-arm] ARMv5 and atomic operations

2012-04-24 Thread Andrew Haley
On 04/24/2012 05:40 PM, Nicolas Pitre wrote: On Tue, 24 Apr 2012, Andrew Haley wrote: On 04/24/2012 05:18 PM, Jon Masters wrote: I wasn't going to reply yet just due to lack of time and because Nico covered the kernel helper stuff so well in his earlier posts. But just to add, these kernel

Re: [fedora-arm] ARMv5 and atomic operations

2012-04-23 Thread Andrew Haley
On 04/23/2012 02:16 AM, Brendan Conoboy wrote: As we get closer to having 100% package coverage in F17-ARM we're running into harder build failures due to the limitations of the chips we're building for. The problem I've noticed on many of the recent failures is due to the lack of atomic

Re: [fedora-arm] ARMv5 and atomic operations

2012-04-23 Thread Gordan Bobic
Andrew Haley wrote: On 04/23/2012 02:16 AM, Brendan Conoboy wrote: As we get closer to having 100% package coverage in F17-ARM we're running into harder build failures due to the limitations of the chips we're building for. The problem I've noticed on many of the recent failures is due to

Re: [fedora-arm] ARMv5 and atomic operations

2012-04-23 Thread Peter Robinson
On Mon, Apr 23, 2012 at 10:40 AM, Andrew Haley a...@redhat.com wrote: On 04/23/2012 10:36 AM, Gordan Bobic wrote: Andrew Haley wrote: On 04/23/2012 02:16 AM, Brendan Conoboy wrote: As we get closer to having 100% package coverage in F17-ARM we're running into harder build failures due to the

Re: [fedora-arm] ARMv5 and atomic operations

2012-04-23 Thread Chris Tyler
On Mon, 2012-04-23 at 10:40 +0100, Andrew Haley wrote: On 04/23/2012 10:36 AM, Gordan Bobic wrote: Andrew Haley wrote: On 04/23/2012 02:16 AM, Brendan Conoboy wrote: As we get closer to having 100% package coverage in F17-ARM we're running into harder build failures due to the

Re: [fedora-arm] ARMv5 and atomic operations

2012-04-23 Thread Nicolas Pitre
On Sun, 22 Apr 2012, Brendan Conoboy wrote: As we get closer to having 100% package coverage in F17-ARM we're running into harder build failures due to the limitations of the chips we're building for. The problem I've noticed on many of the recent failures is due to the lack of atomic

Re: [fedora-arm] ARMv5 and atomic operations

2012-04-23 Thread Nicolas Pitre
On Sun, 22 Apr 2012, Chris Tyler wrote: 6. There is the kernel's user space atomic helper (kuser_cmpxchg64) at 0x0f60, see Documentation/arm/kernel_user_helpers.txt. The kernel puts an instruction sequence here tuned for the current arch that can be called by userland to provide an atomic

Re: [fedora-arm] ARMv5 and atomic operations

2012-04-23 Thread Andrew Haley
On 04/23/2012 04:06 PM, Dan Horák wrote: the main problem no only in ARM land is that many software developers like to develop their own atomic ops implementations in their project instead of using some standard one eg. from GCC :-( I fight with this problem again and again on s390 ...

Re: [fedora-arm] ARMv5 and atomic operations

2012-04-23 Thread Derek Atkins
Chris Tyler ch...@tylers.info writes: 1. Abandon armv5 and move to armv6 where some of the operations we need are available. This will still support the raspberry pi- what about kirkwood *plugs? That would kill the older plugs -- anything below a d2plug. However: do we care? Much?

Re: [fedora-arm] ARMv5 and atomic operations

2012-04-23 Thread Derek Atkins
Chris Tyler ch...@tylers.info writes: Brendan has *just* added the Pi as a target for his nightly rootfs images, but this hasn't been tested yet. This will be a bit different from the final image but will let anyone who wants to play early. (/me toddles off to test that out...) Hmm, I should

Re: [fedora-arm] ARMv5 and atomic operations

2012-04-23 Thread Brendan Conoboy
On 04/23/2012 08:06 AM, Dan Horák wrote: the main problem no only in ARM land is that many software developers like to develop their own atomic ops implementations in their project instead of using some standard one eg. from GCC :-( I fight with this problem again and again on s390 ... Are the

Re: [fedora-arm] ARMv5 and atomic operations

2012-04-23 Thread Peter Robinson
On Mon, Apr 23, 2012 at 5:15 PM, Jeff Voskamp j...@voskamp.ca wrote: On 04/23/2012 11:51 AM, Derek Atkins wrote: Chris Tylerch...@tylers.info  writes: 1. Abandon armv5 and move to armv6 where some of the operations we need are available.  This will still support the raspberry pi- what about

Re: [fedora-arm] ARMv5 and atomic operations

2012-04-23 Thread Thomas Meyer
Am Sonntag, den 22.04.2012, 22:34 -0400 schrieb Chris Tyler: On Sun, 2012-04-22 at 18:16 -0700, Brendan Conoboy wrote: As we get closer to having 100% package coverage in F17-ARM we're running into harder build failures due to the limitations of the chips we're building for. The problem

Re: [fedora-arm] ARMv5 and atomic operations

2012-04-23 Thread Andrew Haley
On 04/23/2012 06:36 PM, Thomas Meyer wrote: Am Sonntag, den 22.04.2012, 22:34 -0400 schrieb Chris Tyler: On Sun, 2012-04-22 at 18:16 -0700, Brendan Conoboy wrote: As we get closer to having 100% package coverage in F17-ARM we're running into harder build failures due to the limitations of the

Re: [fedora-arm] ARMv5 and atomic operations

2012-04-23 Thread Nicolas Pitre
On Mon, 23 Apr 2012, Andrew Haley wrote: On 04/23/2012 06:36 PM, Thomas Meyer wrote: I'm running the Ubuntun 2.6.38 Tegra2 kernel (because of their fbdev support) on top of Fedora 17 armv5el on an Toshiba AC100 Laptop. The rsyslog package crashed everytime because of the missing kernel