linux-kernel - Re: [PATCH] x86 ACPI: normalize segment descriptor register on resume

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Message-ID: <20080625170126.GA2482@elte.hu>
Date:	Wed, 25 Jun 2008 19:01:26 +0200
From:	Ingo Molnar <mingo@...e.hu>
To:	Pavel Machek <pavel@...e.cz>
Cc:	"Rafael J. Wysocki" <rjw@...k.pl>, Len Brown <lenb@...nel.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	ACPI Devel Maling List <linux-acpi@...r.kernel.org>,
	LKML <linux-kernel@...r.kernel.org>,
	pm list <linux-pm@...ts.linux-foundation.org>
Subject: Re: [PATCH] x86 ACPI: normalize segment descriptor register on
	resume

* Pavel Machek <pavel@...e.cz> wrote:

> Acked-by: Pavel Machek <pavel@...e.cz>
> 
> If this could be sneaked into Ingo's tree for some automated testing, 
> that would be good.

sure - i have applied it to tip/out-of-tree. I'm equally nervous about 
this change - it affects every suspend+resume cycle that people do on 
those boxes which are working just fine currently.

btw., it would get a lot more coverage on my test-systems if this commit 
in tip/out-of-tree:

| commit 01259383c345d13b70efcc549439927ae64dc66d
| Author: David Brownell <david-b@...bell.net>
| Date:   Fri May 16 10:12:36 2008 +0200
|
|     sleepy linux self-test

was upstream and if it was enabled more prominently, instead of hidden 
behind the rather obscure condition of:

  config PM_TEST_SUSPEND
        bool "Test suspend/resume and wakealarm during bootup"
        depends on SUSPEND && PM_DEBUG && RTC_LIB=y

and even then it needs certain other config options related to RTC_LIB 
to actually work during bootup.

As a result of all this obstruction, the automated testing i do, which 
builds and boots more than 1 random kernel per minute, will only run 
this self-test once every hour or so.

I dont mind if this option breaks boxes (that its purpose: it does the 
same thing that a real suspend+resume does and suspend+resume frequently 
breaks boxes), but right now it's all obscured so heavily which makes 
automated testing a lot harder than it should be.

it would be wonderful if this excellent suspend+resume self-test was 
upstream and was more prominent! :-)

	Ingo
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