redonkable/remarkable-linux
redonkable/remarkable-linux
1
0
Fork 0
Code Releases Activity

powerpc/mpic: Create a revmap with enough entries for IPIs and timers

Browse source 
The current mpic code creates a linear revmap just big enough for all
the sources, which happens to miss the IPIs and timers on some machines.

This will in turn break when the irqdomain code loses the fallback of
doing a linear search when the revmap fails (and really slows down IPIs
otherwise).

This happens for example on the U4 based Apple machines such as the
dual core PowerMac G5s.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
This commit is contained in:
Benjamin Herrenschmidt 2012-07-22 16:45:43 +00:00
parent 668fcb6972
commit 574ce79cea
1 changed files with 1 additions and 1 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

2
arch/powerpc/sysdev/mpic.c
View file

@ -1376,7 +1376,7 @@ struct mpic * __init mpic_alloc(struct device_node *node,
mpic->isu_mask = (1 << mpic->isu_shift) - 1;
mpic->irqhost = irq_domain_add_linear(mpic->node,
last_irq + 1,
intvec_top,
&mpic_host_ops, mpic);
/*