netdev - Re: [PATCH v2.6.26] gianfar: Determine TBIPA value dynamically

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:	Fri, 11 Apr 2008 14:11:44 -0500
From:	Scott Wood <scottwood@...escale.com>
To:	Andy Fleming <afleming@...escale.com>
CC:	netdev@...r.kernel.org, paul.gortmaker@...driver.com,
	linuxppc-dev@...abs.org
Subject: Re: [PATCH v2.6.26] gianfar: Determine TBIPA value dynamically

Andy Fleming wrote:
> I tried.  Technically, we can.  But the issue is that struct gfar 
> *enet_regs->gfar_mii_regs is declared:
> 
> u8 gfar_mii_regs[24];
> 
> I could not find any sequence of castings that made the warning go away 
> about casting that to a struct gfar_mii __iomem *.  And that includes 
> mucking around with the declaration of gfar_mii_regs.  I vaguely recall 
> determining that you couldn't make it a struct, because you can't 
> guarantee gcc won't much with the size of the struct.  Or something.  

We use structs for registers all over the place.  The only time GCC 
should mess with struct layout is if fields aren't aligned as required 
by the ABI (and in that case, use the packed attribute).

-Scott
--
To unsubscribe from this list: send the line "unsubscribe netdev" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html