netdev - Re: MediaGX/GeodeGX1 requires X86

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 for Android: free password hash cracker in your pocket

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

Message-ID: <20070217150720.GK7582@csclub.uwaterloo.ca>
Date:	Sat, 17 Feb 2007 10:07:20 -0500
From:	lsorense@...lub.uwaterloo.ca (Lennart Sorensen)
To:	takada <takada@....nifty.com>
Cc:	pcnet32@...izon.net, netdev@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: MediaGX/GeodeGX1 requires X86_OOSTORE.

On Sat, Feb 17, 2007 at 11:11:13PM +0900, takada wrote:
> is it mean what doesn't help with doesn't call set_cx86_reoder()?
> this function disable to reorder at 0x4000:0000 to 0xffff:ffff.
> does pcnet32 access at out of above range?

No it is accessing system memory by DMA to transfer frames.  Since the
system has 128MB ram, the addresses are probably all in the first 128MB
range.

I tried changing cyrix.c to explicitly set the serialize bit (0x8000 in
PCR0) rather than explcitly clearing it as is done now.  Didn't make a
difference.  I tried reversing the memory bypass setting, which also did
nothing.  Enabling CONFIG_X86_OOSTORE and recompiling however does make
a difference.

> --- arch/i386/Kconfig.cpu~	2007-02-05 03:44:54.000000000 +0900
> +++ arch/i386/Kconfig.cpu	2007-02-17 21:25:52.000000000 +0900
> @@ -322,7 +322,7 @@ config X86_USE_3DNOW
>  
>  config X86_OOSTORE
>  	bool
> -	depends on (MWINCHIP3D || MWINCHIP2 || MWINCHIPC6) && MTRR
> +	depends on (MWINCHIP3D || MWINCHIP2 || MWINCHIPC6) && MTRR || MGEODEGX1
>  	default y
>  
>  config X86_TSC

I did:
	depends on ((MWINCHIP3D || MWINCHIP2 || MWINCHIPC6) && MTRR) || MGEODEGX1
since I wasn't sure of the precedence in the Kconfig files.

--
Len Sorensen
-
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