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Merge branch 'stable/bug.fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/xen 

* 'stable/bug.fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/xen:
  xen/pci: Use the INT_SRC_OVR IRQ (instead of GSI) to preset the ACPI SCI IRQ.
  xen/mmu: Fix for linker errors when CONFIG_SMP is not defined.
This commit is contained in:
Linus Torvalds 2011-07-01 13:25:56 -07:00
parent 0466dcbeda 155a16f219
commit c9e0b84545
2 changed files with 28 additions and 2 deletions
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26
arch/x86/pci/xen.c
View File

@ -333,6 +333,7 @@ static int xen_register_pirq(u32 gsi, int triggering)
struct physdev_map_pirq map_irq;
int shareable = 0;
char *name;
bool gsi_override = false;
if (!xen_pv_domain())
return -1;
@ -349,11 +350,32 @@ static int xen_register_pirq(u32 gsi, int triggering)
if (pirq < 0)
goto out;
irq = xen_bind_pirq_gsi_to_irq(gsi, pirq, shareable, name);
/* Before we bind the GSI to a Linux IRQ, check whether
* we need to override it with bus_irq (IRQ) value. Usually for
* IRQs below IRQ_LEGACY_IRQ this holds IRQ == GSI, as so:
* ACPI: INT_SRC_OVR (bus 0 bus_irq 9 global_irq 9 low level)
* but there are oddballs where the IRQ != GSI:
* ACPI: INT_SRC_OVR (bus 0 bus_irq 9 global_irq 20 low level)
* which ends up being: gsi_to_irq[9] == 20
* (which is what acpi_gsi_to_irq ends up calling when starting the
* the ACPI interpreter and keels over since IRQ 9 has not been
* setup as we had setup IRQ 20 for it).
*/
if (gsi == acpi_sci_override_gsi) {
/* Check whether the GSI != IRQ */
acpi_gsi_to_irq(gsi, &irq);
if (irq != gsi)
/* Bugger, we MUST have that IRQ. */
gsi_override = true;
}
if (gsi_override)
irq = xen_bind_pirq_gsi_to_irq(irq, pirq, shareable, name);
else
irq = xen_bind_pirq_gsi_to_irq(gsi, pirq, shareable, name);
if (irq < 0)
goto out;
printk(KERN_DEBUG "xen: --> pirq=%d -> irq=%d\n", pirq, irq);
printk(KERN_DEBUG "xen: --> pirq=%d -> irq=%d (gsi=%d)\n", pirq, irq, gsi);
map_irq.domid = DOMID_SELF;
map_irq.type = MAP_PIRQ_TYPE_GSI;

4
arch/x86/xen/mmu.c
View File

@ -1232,7 +1232,11 @@ static void xen_flush_tlb_others(const struct cpumask *cpus,
{
struct {
struct mmuext_op op;
#ifdef CONFIG_SMP
DECLARE_BITMAP(mask, num_processors);
#else
DECLARE_BITMAP(mask, NR_CPUS);
#endif
} *args;
struct multicall_space mcs;