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Re: [Xen-devel] [PATCH] Passthough/domctl: Use correct struct in union



On 03/01/13 21:07, Andrew Cooper wrote:
This appears to be a copy paste error from c/s 23861:ec7c81fbe0de.

It is safe, functionally speaking, as both the xen_domctl_assign_device
and xen_domctl_get_device_group structure start with a 'uint32_t
machine_sbdf'.  We should however use the correct union structure.

Signed-off-by: Andrew Cooper<andrew.cooper3@xxxxxxxxxx>

I should also say that this affects Xen-4.2 as well, so I suggest it as a candidate for backport.

~Andrew


diff -r c4114a042410 -r 69ac79e96ddd xen/drivers/passthrough/iommu.c
--- a/xen/drivers/passthrough/iommu.c
+++ b/xen/drivers/passthrough/iommu.c
@@ -591,7 +591,7 @@ int iommu_do_domctl(
          if ( ret )
              break;

-        seg = domctl->u.get_device_group.machine_sbdf>>  16;
+        seg = domctl->u.assign_device.machine_sbdf>>  16;
          bus = (domctl->u.assign_device.machine_sbdf>>  8)&  0xff;
          devfn = domctl->u.assign_device.machine_sbdf&  0xff;

@@ -615,7 +615,7 @@ int iommu_do_domctl(
          if ( ret )
              break;

-        seg = domctl->u.get_device_group.machine_sbdf>>  16;
+        seg = domctl->u.assign_device.machine_sbdf>>  16;
          bus = (domctl->u.assign_device.machine_sbdf>>  8)&  0xff;
          devfn = domctl->u.assign_device.machine_sbdf&  0xff;

@@ -634,7 +634,7 @@ int iommu_do_domctl(
          if ( ret )
              break;

-        seg = domctl->u.get_device_group.machine_sbdf>>  16;
+        seg = domctl->u.assign_device.machine_sbdf>>  16;
          bus = (domctl->u.assign_device.machine_sbdf>>  8)&  0xff;
          devfn = domctl->u.assign_device.machine_sbdf&  0xff;


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