netdev - RE: [PATCH v2] netlink: align attributes on 64-bits

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Message-ID: <AE90C24D6B3A694183C094C60CF0A2F6026B70FB@saturn3.aculab.com>
Date:	Thu, 20 Dec 2012 09:40:17 -0000
From:	"David Laight" <David.Laight@...LAB.COM>
To:	"Thomas Graf" <tgraf@...g.ch>
Cc:	<nicolas.dichtel@...nd.com>, <bhutchings@...arflare.com>,
	<netdev@...r.kernel.org>, <davem@...emloft.net>
Subject: RE: [PATCH v2] netlink: align attributes on 64-bits

> > I think:
> > 1) Alignment is only needed on systems that have 'strict alignment'
> >    requirements (maybe disable for testing?)
> 
> Right, what about mixed 32bit/64bit environments?

Support for i386 user binaries on amd64 kernels
is an entirely different problem!
That, typically, requires the kernel to know that
the application is 32bit and use separate structures
where the 64bit items have the aligned(32) attribute.

	David



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