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Date:	Mon, 13 May 2013 09:41:59 +0200
From:	Heiko Carstens <heiko.carstens@...ibm.com>
To:	Geert Uytterhoeven <geert@...ux-m68k.org>,
	linux-net-drivers@...arflare.com,
	Ben Hutchings <bhutchings@...arflare.com>,
	Stuart Hodgson <smhodgson@...arflare.com>
Cc:	Linux Kernel Development <linux-kernel@...r.kernel.org>,
	linux-s390@...r.kernel.org, netdev@...r.kernel.org
Subject: Re: Build regressions/improvements in v3.10-rc1 (s390)

On Sun, May 12, 2013 at 10:50:45PM +0200, Geert Uytterhoeven wrote:
> On Sun, 12 May 2013, Geert Uytterhoeven wrote:
> > However, the full list of errors isn't that unmanageable, so I'm following
> > up with a digested list...
> 
> drivers/net/ethernet/sfc/efx.c:646:3: error: call to '__compiletime_assert_648' declared with attribute error: BUILD_BUG_ON failed: sizeof(struct efx_rx_page_state) + EFX_PAGE_IP_ALIGN + EFX_RX_USR_BUF_SIZE > PAGE_SIZE / 2: 2 errors in 2 logs
> 	v3.10-rc1/s390x/s390-allyesconfig v3.10-rc1/s390x/s390-allmodconfig

that seems to a BUILD_BUG_ON that only triggers on s390, because we have
L1_CACHE_BYTES defined with 256 bytes... which seems to be more than any
other architecture has.
There was a different network driver that had a similar BUILD_BUG_ON, but
it got removed.

Right, it was the igb driver:
http://comments.gmane.org/gmane.linux.network/261378

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