Subject: Re: Build regressions/improvements in v3.10-rc1 (s390)

From: Heiko Carstens <[email-masked]>
Date: Mon, 13 May 2013 09:41:59 +0200

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