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[Xen-devel] Re: [PATCH] tweak memory error correction field in the SMBIO

To: Paolo Bonzini <pbonzini@xxxxxxxxxx>
Subject: [Xen-devel] Re: [PATCH] tweak memory error correction field in the SMBIOS data
From: Andi Kleen <andi@xxxxxxxxxxxxxx>
Date: Wed, 25 Nov 2009 11:27:28 +0100
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In-reply-to: <1259086479-12444-1-git-send-email-pbonzini@xxxxxxxxxx> (Paolo Bonzini's message of "Tue, 24 Nov 2009 19:14:39 +0100")
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User-agent: Gnus/5.1008 (Gnus v5.10.8) Emacs/22.3 (gnu/linux)
Paolo Bonzini <pbonzini@xxxxxxxxxx> writes:

> Microsoft's Windows logo certified hardware requires single- or
> multi-bit ECC; since the SVVP certification runs the same test
> on the guest, Xen domains will currently fail it.
> -    p->error_correction = 0x01; /* other */
> +    p->error_correction = 0x06; /* Multi-bit ECC to make Microsoft happy */

That's lying if the host doesn't support ECC.

It would be better if you checked that on the host and then
set it appropiately in the guest too.

ak@xxxxxxxxxxxxxxx -- Speaking for myself only.

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