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Re: [Qemu-devel] [PATCH] fcntl64 fix


From: Stuart Anderson
Subject: Re: [Qemu-devel] [PATCH] fcntl64 fix
Date: Tue, 20 Mar 2007 19:05:33 -0400 (EDT)

On Tue, 20 Mar 2007, Thiemo Seufer wrote:

Still, this part makes no sense to me since it is in a packed struct.
Can you explain why this works better for you?

It worked better, in that it fixed a problem that let me continue on to
fix other issues. After revisiting fcntl() and coming up with the more
comprehensive patch, this change now seems to have no effect, so I
must conceed that it is not needed, please drop that part of the patch.

Now that the dust has settled, I see where the change is probably a
no-op anyway. A quick little test program indicates that on x86_64,
l_start will have an offset of 8 wether the structure is packed or not,
and wether the __pad member is present or not. The unsigned long long is
always going to be aligned to a 8 byte boundary.

                                Stuart

Stuart R. Anderson                               address@hidden
Network & Software Engineering                   http://www.netsweng.com/
1024D/37A79149:                                  0791 D3B8 9A4C 2CDC A31F
                                                 BD03 0A62 E534 37A7 9149




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