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[RFC,v2,1/7] util/vfio-helpers: Store eventfd using int32_t type

Message ID 20200813172957.8289-2-philmd@redhat.com (mailing list archive)
State New, archived
Headers show
Series util/vfio-helpers: Add support for multiple IRQs | expand

Commit Message

Philippe Mathieu-Daudé Aug. 13, 2020, 5:29 p.m. UTC 
Per the documentation in linux-headers/linux/vfio.h:

 VFIO_DEVICE_SET_IRQS

 * DATA_EVENTFD binds the specified ACTION to the provided __s32 eventfd.

Replace the 'int' by an 'int32_t' to match the documentation.

Fixes: 418026ca43 ("util: Introduce vfio helpers")
Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
---
 util/vfio-helpers.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)
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Patch

diff --git a/util/vfio-helpers.c b/util/vfio-helpers.c
index e399e330e2..9cb9b553a5 100644
--- a/util/vfio-helpers.c
+++ b/util/vfio-helpers.c
@@ -193,7 +193,7 @@  int qemu_vfio_pci_init_irq(QEMUVFIOState *s, EventNotifier *e,
         return -EINVAL;
     }
 
-    irq_set_size = sizeof(*irq_set) + sizeof(int);
+    irq_set_size = sizeof(*irq_set) + sizeof(int32_t);
     irq_set = g_malloc0(irq_set_size);
 
     /* Get to a known IRQ state */
@@ -205,7 +205,7 @@  int qemu_vfio_pci_init_irq(QEMUVFIOState *s, EventNotifier *e,
         .count = 1,
     };
 
-    *(int *)&irq_set->data = event_notifier_get_fd(e);
+    *(int32_t *)&irq_set->data = event_notifier_get_fd(e);
     r = ioctl(s->device, VFIO_DEVICE_SET_IRQS, irq_set);
     g_free(irq_set);
     if (r) {