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powerpc/xics: Make sure we have a sensible default distribution server

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Even when nothing is specified in the device tree, and despite the
fact that we don't setup links properly yet, we still need a reasonable
value in there or some interrupts won't be setup properly to point to
an existing processor.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
This commit is contained in:
Benjamin Herrenschmidt 2011-03-04 18:25:55 +11:00
parent 50fb8ebe7c
commit f6e17f9b0b
1 changed files with 9 additions and 3 deletions
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12
arch/powerpc/sysdev/xics/xics-common.c
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@ -57,7 +57,9 @@ void xics_update_irq_servers(void)
BUG_ON(!np);
hcpuid = get_hard_smp_processor_id(boot_cpuid);
xics_default_server = hcpuid;
xics_default_server = xics_default_distrib_server = hcpuid;
pr_devel("xics: xics_default_server = 0x%x\n", xics_default_server);
ireg = of_get_property(np, "ibm,ppc-interrupt-gserver#s", &ilen);
if (!ireg) {
@ -75,9 +77,11 @@ void xics_update_irq_servers(void)
for (j = 0; j < i; j += 2) {
if (ireg[j] == hcpuid) {
xics_default_distrib_server = ireg[j+1];
break;
}
}
pr_devel("xics: xics_default_distrib_server = 0x%x\n",
xics_default_distrib_server);
of_node_put(np);
}
@ -113,7 +117,7 @@ void xics_mask_unknown_vec(unsigned int vec)
{
struct ics *ics;
pr_err("Interrupt %u (real) is invalid, disabling it.\n", vec);
pr_err("Interrupt 0x%x (real) is invalid, disabling it.\n", vec);
list_for_each_entry(ics, &ics_list, link)
ics->mask_unknown(ics, vec);
@ -293,6 +297,8 @@ void xics_migrate_irqs_away(void)
* If not we set it to the first cpu in the mask, even if multiple cpus
* are set. This is so things like irqbalance (which set core and package
* wide affinities) do the right thing.
*
* We need to fix this to implement support for the links
*/
int xics_get_irq_server(unsigned int virq, const struct cpumask *cpumask,
unsigned int strict_check)