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

To: Paolo Bonzini <pbonzini@xxxxxxxxxx>, "xen-devel@xxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxx>
Subject: RE: [Xen-devel] [PATCH] tweak memory error correction field in the SMBIOS data
From: "Jiang, Yunhong" <yunhong.jiang@xxxxxxxxx>
Date: Wed, 25 Nov 2009 11:06:37 +0800
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Thread-topic: [Xen-devel] [PATCH] tweak memory error correction field in the SMBIOS data
You mean all Windows version will requires ECC? 

--jyh

xen-devel-bounces@xxxxxxxxxxxxxxxxxxx wrote:
> 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.
> 
> This patch fixes it.
> ---
> tools/firmware/hvmloader/smbios.c |   14 +++++++++-----
> 1 files changed, 9 insertions(+), 5 deletions(-)
> 
> diff --git a/tools/firmware/hvmloader/smbios.c
> b/tools/firmware/hvmloader/smbios.c
> --- a/tools/firmware/hvmloader/smbios.c
> +++ b/tools/firmware/hvmloader/smbios.c
> @@ -455,7 +455,7 @@
> 
>     p->location = 0x01; /* other */
>     p->use = 0x03; /* system memory */
> -    p->error_correction = 0x01; /* other */
> +    p->error_correction = 0x06; /* Multi-bit ECC to make
> Microsoft happy */
>     p->maximum_capacity = memsize * 1024;
>     p->memory_error_information_handle = 0xfffe; /* none provided */
>     p->number_of_memory_devices = nr_mem_devs;
> 
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