From: Maxim Levitsky <maximlevitsky@gmail.com>
To: linux-pm@lists.linux-foundation.org
Cc: Shaohua Li <shaohua.li@intel.com>,
linux acpi <linux-acpi@vger.kernel.org>
Subject: Re: [linux-pm] [patch] hibernation: utilize ACPI hardware signature
Date: Wed, 2 Jan 2008 09:37:13 +0200 [thread overview]
Message-ID: <200801020937.13808.maximlevitsky@gmail.com> (raw)
In-Reply-To: <1199257162.14632.4.camel@sli10-desk.sh.intel.com>
On Wednesday, 2 January 2008 08:59:22 Shaohua Li wrote:
> ACPI defines a hardware signature. BIOS calculates the signature
> according to hardware configure, if hardware changes, the signature will
> change, in this case, S4 resume should fail.
>
> Signed-off-by: Shaohua Li <shaohua.li@intel.com>
> ---
> drivers/acpi/sleep/main.c | 13 +++++++++++++
> include/linux/suspend.h | 5 +++++
> kernel/power/disk.c | 21 ++++++++++++++++++---
> kernel/power/power.h | 6 +++---
> kernel/power/swap.c | 24 +++++++++++++++---------
> 5 files changed, 54 insertions(+), 15 deletions(-)
Once reading the ACPI spec I noticed that ACPI supports this feature
so it is qute nice to implement it, since this will prevent resume from disk what hardware was changed.
But.. how many bioses are broken regarding this feature....
Regards,
Maxim Levitsky
next prev parent reply other threads:[~2008-01-02 7:37 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-01-02 6:59 [patch] hibernation: utilize ACPI hardware signature Shaohua Li
2008-01-02 7:37 ` Maxim Levitsky [this message]
2008-01-02 9:29 ` [linux-pm] " Johannes Berg
2008-01-03 1:52 ` Shaohua Li
2008-01-02 10:08 ` Erik Andrén
2008-01-02 14:12 ` Rafael J. Wysocki
2008-01-02 21:25 ` [linux-pm] " Nigel Cunningham
2008-01-02 22:18 ` Rafael J. Wysocki
2008-01-03 8:26 ` Nigel Cunningham
2008-01-02 14:05 ` Rafael J. Wysocki
2008-01-02 21:26 ` [linux-pm] " Nigel Cunningham
2008-01-02 22:01 ` Rafael J. Wysocki
2008-01-03 8:31 ` Nigel Cunningham
2008-01-03 16:58 ` Rafael J. Wysocki
2008-01-03 22:10 ` Nigel Cunningham
2008-01-03 5:36 ` Shaohua Li
2008-01-03 17:04 ` Rafael J. Wysocki
2008-01-04 5:41 ` Shaohua Li
2008-01-04 20:44 ` Rafael J. Wysocki
2008-01-07 1:46 ` Shaohua Li
2008-01-10 23:39 ` Rafael J. Wysocki
2008-01-11 1:07 ` Shaohua Li
2008-01-11 17:20 ` Rafael J. Wysocki
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