File 21683-vtd-kill-timer-conditional.patch of Package xen.import4929

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File 21683-vtd-kill-timer-conditional.patch of Package xen.import4929

# HG changeset patch
# User Keir Fraser <keir.fraser@citrix.com>
# Date 1277739919 -3600
# Node ID 059a12afce52a213db56bd8e9442d9eeadfdd34c
# Parent  7e46fdbe8a1187cee2ab609256300d7967f37f06
vtd: Only kill_timer() an init_timer()'ed timer.

Signed-off-by: Keir Fraser <keir.fraser@citrix.com>

--- a/xen/drivers/passthrough/io.c
+++ b/xen/drivers/passthrough/io.c
@@ -27,7 +27,7 @@
 
 static void hvm_dirq_assist(unsigned long _d);
 
-static int pt_irq_need_timer(uint32_t flags)
+bool_t pt_irq_need_timer(uint32_t flags)
 {
     return !(flags & (HVM_IRQ_DPCI_GUEST_MSI | HVM_IRQ_DPCI_TRANSLATE));
 }
--- a/xen/drivers/passthrough/pci.c
+++ b/xen/drivers/passthrough/pci.c
@@ -263,7 +263,9 @@ static void pci_clean_dpci_irqs(struct d
               i = find_next_bit(hvm_irq_dpci->mapping, d->nr_pirqs, i + 1) )
         {
             pirq_guest_unbind(d, i);
-            kill_timer(&hvm_irq_dpci->hvm_timer[domain_pirq_to_irq(d, i)]);
+
+            if ( pt_irq_need_timer(hvm_irq_dpci->mirq[i].flags) )
+                kill_timer(&hvm_irq_dpci->hvm_timer[domain_pirq_to_irq(d, i)]);
 
             list_for_each_safe ( digl_list, tmp,
                                  &hvm_irq_dpci->mirq[i].digl_list )
--- a/xen/include/xen/iommu.h
+++ b/xen/include/xen/iommu.h
@@ -106,6 +106,7 @@ void hvm_dpci_isairq_eoi(struct domain *
 struct hvm_irq_dpci *domain_get_irq_dpci(struct domain *domain);
 int domain_set_irq_dpci(struct domain *domain, struct hvm_irq_dpci *dpci);
 void free_hvm_irq_dpci(struct hvm_irq_dpci *dpci);
+bool_t pt_irq_need_timer(uint32_t flags);
 
 #define PT_IRQ_TIME_OUT MILLISECS(8)
 #define VTDPREFIX "[VT-D]"

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File 21683-vtd-kill-timer-conditional.patch of Package xen.import4929

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