x86: Get rid of get_nr_irqs_gsi()

No need to expose this outside of the ioapic code. The dynamic
allocations are guaranteed not to happen in the gsi space. See commit
62a08ae2a.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Grant Likely <grant.likely@linaro.org>
Cc: Tony Luck <tony.luck@intel.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: x86@kernel.org
Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Cc: xen-devel@lists.xenproject.org
Link: http://lkml.kernel.org/r/20140507154335.959870037@linutronix.de
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

1 files changed, 1 insertions, 16 deletions

diff --git a/drivers/xen/events/events_base.c b/drivers/xen/events/events_base.c
index dfa12a4a0a48..c919d3d5c845 100644
--- a/drivers/xen/events/events_base.c
+++ b/drivers/xen/events/events_base.c
@@ -390,22 +390,7 @@ static void xen_irq_init(unsigned irq)
 
 static int __must_check xen_allocate_irqs_dynamic(int nvec)
 {
-        int first = 0;
-        int i, irq;
-
-#ifdef CONFIG_X86_IO_APIC
-        /*
-         * For an HVM guest or domain 0 which see "real" (emulated or
-         * actual respectively) GSIs we allocate dynamic IRQs
-         * e.g. those corresponding to event channels or MSIs
-         * etc. from the range above those "real" GSIs to avoid
-         * collisions.
-         */
-        if (xen_initial_domain() || xen_hvm_domain())
-                first = get_nr_irqs_gsi();
-#endif
-
-        irq = irq_alloc_descs_from(first, nvec, -1);
+        int i, irq = irq_alloc_descs(-1, 0, nvec, -1);
 
         if (irq >= 0) {
                 for (i = 0; i < nvec; i++)