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Re: [PATCH v3 1/3] Loongson-2F: Flush the branch target history such as

To: Andreas Barth <>
Subject: Re: [PATCH v3 1/3] Loongson-2F: Flush the branch target history such as BTB and RAS
From: Wu Zhangjin <>
Date: Sat, 03 Apr 2010 09:42:55 +0800
Cc: Ralf Baechle <>,
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In-reply-to: <>
Organization: DSLab, Lanzhou University, China
Original-recipient: rfc822;
References: <> <> <>
On Fri, 2010-04-02 at 16:54 +0200, Andreas Barth wrote:
> * Wu Zhangjin ( [100313 05:45]:
> > This patch did clear BTB(branch target buffer), forbid RAS(return
> > address stack) via Loongson-2F's 64bit diagnostic register.
> Unfortunatly the Loongson 2F here still fails with this patch,
> compiled with the new binutils and both options enabled.
> Testcase: plain debian unstable chroot, build binutils in that chroot.
> More ideas, codes, whatever welcome.


This patch is not enough, please use the kernel(>=2.6.32) from or

        Wu Zhangjin

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