From: Alexey Kardashevskiy <aik@ozlabs.ru>
To: Alex Williamson <alex.williamson@redhat.com>
Cc: Alexey Kardashevskiy <aik@ozlabs.ru>,
kvm@vger.kernel.org, linux-kernel@vger.kernel.org,
David Gibson <david@gibson.dropbear.id.au>
Subject: [PATCH kernel] vfio: Add explicit alignments in vfio_iommu_spapr_tce_create
Date: Fri, 18 Dec 2015 12:35:47 +1100 [thread overview]
Message-ID: <1450402547-38599-1-git-send-email-aik@ozlabs.ru> (raw)
The vfio_iommu_spapr_tce_create struct has 4x32bit and 2x64bit fields
which should have resulted in sizeof(fio_iommu_spapr_tce_create) equal
to 32 bytes. However due to the gcc's default alignment, the actual
size of this struct is 40 bytes.
This fills gaps with __resv1/2 fields.
This should not cause any change in behavior.
Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru>
---
include/uapi/linux/vfio.h | 2 ++
1 file changed, 2 insertions(+)
diff --git a/include/uapi/linux/vfio.h b/include/uapi/linux/vfio.h
index 9fd7b5d..d117233 100644
--- a/include/uapi/linux/vfio.h
+++ b/include/uapi/linux/vfio.h
@@ -568,8 +568,10 @@ struct vfio_iommu_spapr_tce_create {
__u32 flags;
/* in */
__u32 page_shift;
+ __u32 __resv1;
__u64 window_size;
__u32 levels;
+ __u32 __resv2;
/* out */
__u64 start_addr;
};
--
2.5.0.rc3
next reply other threads:[~2015-12-18 1:37 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-12-18 1:35 Alexey Kardashevskiy [this message]
2015-12-21 0:56 ` [PATCH kernel] vfio: Add explicit alignments in vfio_iommu_spapr_tce_create David Gibson
2015-12-22 20:09 ` Alex Williamson
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