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Re: [PATCH] x86: Voluntary leave_mm before entering ACPI C3

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From: Arjan van de Ven <arjan@...>
To: H. Peter Anvin <hpa@...>
Cc: Ingo Molnar <mingo@...>, Venki Pallipadi <venkatesh.pallipadi@...>, Thomas Gleixner <tglx@...>, Len Brown <lenb@...>, linux-kernel <linux-kernel@...>
Subject: Re: [PATCH] x86: Voluntary leave_mm before entering ACPI C3
Date: Thursday, December 20, 2007 - 3:53 am

On Wed, 19 Dec 2007 11:48:14 -0800
"H. Peter Anvin" <hpa@zytor.com> wrote:


that sounds nice. It's fiction though ;-)

The thing to realize is that linux only sees "ACPI C3"; the BIOS maps that C3 to.. well any of the C states the processor in the system has. What you're saying is afaik correct for the *hardware* C3, not for the "C3" that Linux sees..


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Messages in current thread:
[PATCH] x86: Voluntary leave_mm before entering ACPI C3, Venki Pallipadi, (Wed Dec 19, 2:34 pm)
Re: [PATCH] x86: Voluntary leave_mm before entering ACPI C3, Ingo Molnar, (Wed Dec 19, 3:32 pm)
Re: [PATCH] x86: Voluntary leave_mm before entering ACPI C3, Venki Pallipadi, (Wed Dec 19, 10:08 pm)
Re: [PATCH] x86: Voluntary leave_mm before entering ACPI C3, Ingo Molnar, (Thu Dec 20, 5:31 am)
Re: [PATCH] x86: Voluntary leave_mm before entering ACPI C3, Ingo Molnar, (Wed Dec 19, 4:54 pm)
Re: [PATCH] x86: Voluntary leave_mm before entering ACPI C3, H. Peter Anvin, (Wed Dec 19, 3:36 pm)
Re: [PATCH] x86: Voluntary leave_mm before entering ACPI C3, Ingo Molnar, (Wed Dec 19, 3:40 pm)
Re: [PATCH] x86: Voluntary leave_mm before entering ACPI C3, Venki Pallipadi, (Wed Dec 19, 3:56 pm)
Re: [PATCH] x86: Voluntary leave_mm before entering ACPI C3, H. Peter Anvin, (Wed Dec 19, 3:48 pm)
Re: [PATCH] x86: Voluntary leave_mm before entering ACPI C3, Arjan van de Ven, (Thu Dec 20, 3:53 am)
Re: [PATCH] x86: Voluntary leave_mm before entering ACPI C3, H. Peter Anvin, (Thu Dec 20, 12:16 pm)
Re: [PATCH] x86: Voluntary leave_mm before entering ACPI C3, Len Brown, (Thu Dec 20, 3:28 pm)
Re: [PATCH] x86: Voluntary leave_mm before entering ACPI C3, Arjan van de Ven, (Thu Dec 20, 2:22 pm)
Re: [PATCH] x86: Voluntary leave_mm before entering ACPI C3, H. Peter Anvin, (Thu Dec 20, 2:32 pm)
Re: [PATCH] x86: Voluntary leave_mm before entering ACPI C3, Venki Pallipadi, (Wed Dec 19, 4:23 pm)