netdev - Re: [PATCH] ixgbe: Introduce new 10GbE driver for Intel 82598 based PCI Express adapters...

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Date:	Mon, 02 Jul 2007 07:31:21 -0700
From:	Arjan van de Ven <arjan@...ux.intel.com>
To:	Jeff Garzik <jeff@...zik.org>
CC:	Ayyappan Veeraiyan <ayyappan.veeraiyan@...el.com>,
	netdev@...r.kernel.org, auke-jan.h.kok@...el.com,
	akpm@...ux-foundation.org
Subject: Re: [PATCH] ixgbe: Introduce new 10GbE driver for Intel 82598 based
 PCI	Express adapters...

Jeff Garzik wrote:
> I'm not sure whether gcc is confused about ABI alignment or such, on 
> various platforms, but every time I look at the asm generated it is 
> /not/ equivalent to open-coded feature flags and bitwise logic.  Often 
> it is demonstrably worse.
> 
(I can imagine this being different if you forcefully pack your 
structure to align with hw masks, but that is obviously not the case here)
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