linux-kernel - Re: [patch 134/149] x86, paravirt: Add a global synchronization point for pvclock

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Date:	Tue, 13 Jul 2010 18:22:07 +0200
From:	Peter Palfrader <peter@...frader.org>
To:	Avi Kivity <avi@...hat.com>
Cc:	Greg KH <gregkh@...e.de>, linux-kernel@...r.kernel.org,
	stable@...nel.org, stable-review@...nel.org,
	torvalds@...ux-foundation.org, akpm@...ux-foundation.org,
	alan@...rguk.ukuu.org.uk, Glauber Costa <glommer@...hat.com>,
	Zachary Amsden <zamsden@...hat.com>,
	Jeremy Fitzhardinge <jeremy@...p.org>,
	Marcelo Tosatti <mtosatti@...hat.com>
Subject: Re: [patch 134/149] x86, paravirt: Add a global synchronization
	point for pvclock

On Tue, 13 Jul 2010, Avi Kivity wrote:

>>> So it looks like last_value was placed in a read only section.  Please
>>> post your System.map somewhere.
>>>      
>> weasel@...repid:~$ publish System.map
>> http://asteria.noreply.org/~weasel/volatile/2010-07-13-mbm2xEdd8Q4/System.map
>> weasel@...repid:~$ grep -i last_value System.map
>> ffffffff81712e80 r last_value
>> ffffffff81b05240 b last_value.26163
>>    
>
> "r" = "read only"
>
> How does it look in 'nm arch/x86/kernel/pvclock.o'?

The same:

[git|v2.6.32.16] weasel@...lma:/scratch/kernel/2.6.32.16$ nm arch/x86/kernel/pvclock.o
0000000000000000 r last_value
                 U native_read_tsc
0000000000000040 T pvclock_clocksource_read
0000000000000100 T pvclock_read_wallclock
0000000000000000 T pvclock_tsc_khz
                 U set_normalized_timespec


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