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From: Takuya Yoshikawa <yoshikawa.takuya@oss.ntt.co.jp>
To: Avi Kivity <avi@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>,
	paulmck@linux.vnet.ibm.com, Oleg Nesterov <oleg@redhat.com>,
	linux-kernel <linux-kernel@vger.kernel.org>,
	Marcelo Tosatti <mtosatti@redhat.com>,
	KVM list <kvm@vger.kernel.org>
Subject: Re: [test result] dirty logging without srcu update -- Re: [RFC][PATCH] srcu: Implement call_srcu()
Date: Thu, 02 Feb 2012 19:40:44 +0900	[thread overview]
Message-ID: <4F2A682C.7090109@oss.ntt.co.jp> (raw)
In-Reply-To: <4F2A63C6.7030301@redhat.com>

(2012/02/02 19:21), Avi Kivity wrote:

>>
>> I used "unsigned int" just because I wanted to use the current
>> atomic_clear_mask() as is.
>>
>> We need to implement atomic_clear_mask_long() or use ...
>
> If we use cmpxchg8b/cmpxchg16b then this won't fit with the
> atomic_*_long family.
>

OK, I will try.


I have one concern about correctness issue though:

	concurrent rmap write protection may not be safe due to
	delayed tlb flush ... cannot happen?


	Takuya

  reply	other threads:[~2012-02-02 10:38 UTC|newest]

Thread overview: 23+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2012-01-31 13:32 [RFC][PATCH] srcu: Implement call_srcu() Peter Zijlstra
2012-01-31 13:47 ` Avi Kivity
2012-01-31 13:50   ` Peter Zijlstra
2012-01-31 22:24     ` Paul E. McKenney
2012-02-01 10:22       ` Peter Zijlstra
2012-02-01 10:44         ` Avi Kivity
2012-02-01 10:49           ` Avi Kivity
2012-02-01 11:00             ` Takuya Yoshikawa
2012-02-01 11:01               ` Avi Kivity
2012-02-01 11:12                 ` Takuya Yoshikawa
2012-02-01 13:24                   ` Avi Kivity
2012-02-02  5:46                     ` [test result] dirty logging without srcu update -- " Takuya Yoshikawa
2012-02-02 10:10                       ` Avi Kivity
2012-02-02 10:21                         ` Takuya Yoshikawa
2012-02-02 10:21                           ` Avi Kivity
2012-02-02 10:40                             ` Takuya Yoshikawa [this message]
2012-02-02 11:02                               ` Avi Kivity
2012-02-02 14:44                                 ` Takuya Yoshikawa
2012-02-02 14:57                                   ` Avi Kivity
2012-02-01 13:43                 ` Marcelo Tosatti
2012-02-01 15:42                   ` Takuya Yoshikawa
2012-02-01 13:50             ` Marcelo Tosatti
2012-02-01 14:07         ` Paul E. McKenney

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