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Message-ID: <1FB5E1D5CA062146B38059374562DF725B6A4277@TK5EX14MBXC130.redmond.corp.microsoft.com>
Date:	Thu, 25 Feb 2010 17:30:29 +0000
From:	Haiyang Zhang <haiyangz@...rosoft.com>
To:	Greg KH <greg@...ah.com>, Hank Janssen <hjanssen@...rosoft.com>
CC:	"devel@...verdev.osuosl.org" <devel@...verdev.osuosl.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: RE: Problem with auto-detecting a HV environment from within Linux

> From: Greg KH [mailto:greg@...ah.com]
> So, is there a way to "know" ahead of time if we are in a HV guest
> environment?

Here is some info from dmesg, which shows "VRTUAL MICROSFT".
ACPI: RSDT (v001 VRTUAL MICROSFT 0x03000919 MSFT 0x00000097) @ 0x000000001fff0000
ACPI: FADT (v002 VRTUAL MICROSFT 0x03000919 MSFT 0x00000097) @ 0x000000001fff0200
ACPI: WAET (v001 VRTUAL MICROSFT 0x03000919 MSFT 0x00000097) @ 0x000000001fff0b00
ACPI: SLIC (v001 VRTUAL MICROSFT 0x03000919 MSFT 0x00000097) @ 0x000000001fff0b40
ACPI: OEM0 (v001 VRTUAL MICROSFT 0x03000919 MSFT 0x00000097) @ 0x000000001fff0d40
ACPI: SRAT (v002 VRTUAL MICROSFT 0x03000919 MSFT 0x00000097) @ 0x000000001fff0600
ACPI: MADT (v001 VRTUAL MICROSFT 0x03000919 MSFT 0x00000097) @ 0x000000001fff0300
ACPI: OEMB (v001 VRTUAL MICROSFT 0x03000919 MSFT 0x00000097) @ 0x000000001ffff240
ACPI: DSDT (v001 MSFTVM MSFTVM02 0x00000002 INTL 0x02002026) @ 0x0000000000000000

Thanks,

- Haiyang

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