On Fri, 17 Jun 2011, Paul Brook wrote:
> > >> There is still going to be a small cost even in hardware fixup so this
> > >> is very much worth solving despite it's "becoming invisible" because the
> > >> chips are hiding / solving it already.
> > >
> > > But I believe that h/w feature is turned o
> >> There is still going to be a small cost even in hardware fixup so this
> >> is very much worth solving despite it's "becoming invisible" because the
> >> chips are hiding / solving it already.
> >
> > But I believe that h/w feature is turned off in Linux by default. You
> > have to add noalig
On Fri, Jun 17, 2011 at 01:10:11PM +0100, Dave Martin wrote:
> For ARM, we can achieve the goal by augmenting the default kernel command-
> line options: either
> alignment=3
> Fix up each alingment fault, but also log the faulting address
> and name of the offending process t
On 06/17/2011 08:17 PM, Somebody in the thread at some point said:
On 06/17/2011 08:11 AM, Andy Green wrote:
On 06/17/2011 01:10 PM, Somebody in the thread at some point said:
Hi -
I've recently become aware that a few packages are causing alignment
faults on ARM, and are relying on the align
On Fri, 17 Jun 2011, Arnd Bergmann wrote:
> On Friday 17 June 2011 14:10:11 Dave Martin wrote:
>
> > As part of the general effort to make open source on ARM better, I think
> > it would be great if we can disable the alignment fixups (or at least
> > enable logging) and work with upstreams to g
On 06/17/2011 08:11 AM, Andy Green wrote:
> On 06/17/2011 01:10 PM, Somebody in the thread at some point said:
>
> Hi -
>
>> I've recently become aware that a few packages are causing alignment
>> faults on ARM, and are relying on the alignment fixup emulation code in
>> the kernel in order to wo
On 06/17/2011 01:10 PM, Somebody in the thread at some point said:
Hi -
I've recently become aware that a few packages are causing alignment
faults on ARM, and are relying on the alignment fixup emulation code in
the kernel in order to work.
Just a FYI a lot of later ARM chips are solving ali
On Friday 17 June 2011 14:10:11 Dave Martin wrote:
> As part of the general effort to make open source on ARM better, I think
> it would be great if we can disable the alignment fixups (or at least
> enable logging) and work with upstreams to get the affected packages
> fixed.
>
> For release im
Hi all,
I've recently become aware that a few packages are causing alignment
faults on ARM, and are relying on the alignment fixup emulation code in
the kernel in order to work.
Such faults are very expensive in terms of CPU cycles, and can generally
only result from wrong code (for example, C/C+
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