Patch "xen/x86: actually allocate legacy interrupts on PV guests" has been added to the 4.5-stable tree

This is a note to let you know that I've just added the patch titled

xen/x86: actually allocate legacy interrupts on PV guests

to the 4.5-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
xen-x86-actually-allocate-legacy-interrupts-on-pv-guests.patch
and it can be found in the queue-4.5 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree, please let <[email protected]> know about it.

From: Stefano Stabellini <[email protected]>
Date: Wed, 20 Apr 2016 14:15:01 +0100
Subject: xen/x86: actually allocate legacy interrupts on PV guests

From: Stefano Stabellini <[email protected]>

commit 702f926067d2a4b28c10a3c41a1172dd62d9e735 upstream.

b4ff8389ed14 is incomplete: relies on nr_legacy_irqs() to get the number of legacy interrupts when actually nr_legacy_irqs() returns 0 after probe_8259A(). Use NR_IRQS_LEGACY instead.

---
 arch/x86/pci/xen.c |    7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

@@ -491,8 +491,11 @@ int __init pci_xen_initial_domain(void)
 #endif
 	__acpi_register_gsi = acpi_register_gsi_xen;
 	__acpi_unregister_gsi = NULL;
-	/* Pre-allocate legacy irqs */
-	for (irq = 0; irq < nr_legacy_irqs(); irq++) {
+	/*
+	 * Pre-allocate the legacy IRQs.  Use NR_LEGACY_IRQS here
+	 * because we don't have a PIC and thus nr_legacy_irqs() is zero.
+	 */
+	for (irq = 0; irq < NR_IRQS_LEGACY; irq++) {
 		int trigger, polarity;
 
 		if (acpi_get_override_irq(irq, &trigger, &polarity) == -1)

Patches currently in stable-queue which might be from [email protected] are

queue-4.5/xen-x86-actually-allocate-legacy-interrupts-on-pv-guests.patch