From: "yunfeng zhang" <zyf.zeroos@gmail.com>
To: "David Miller" <davem@davemloft.net>
Cc: linux-kernel@vger.kernel.org
Subject: Re: BUG: about flush TLB during unmapping a page in memory subsystem
Date: Fri, 20 Oct 2006 13:10:45 +0800 [thread overview]
Message-ID: <4df04b840610192210x3d7de930k7be7dbf9e38819bd@mail.gmail.com> (raw)
In-Reply-To: <20061019.200211.88476455.davem@davemloft.net>
Maybe, the solution is below
...
// >>> ptep_clear((__vma)->vm_mm, __address, __ptep);
// >>> flush_tlb_page(__vma, __address);
// >>> __ptep;
...
And even so, we also get a pte with present = 0 AND its dirty = 1, an odd pte.
Remember B dirtied the pte before A executes flush_tlb_page.
next prev parent reply other threads:[~2006-10-20 5:12 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-10-20 2:47 yunfeng zhang
2006-10-20 3:02 ` David Miller
2006-10-20 5:10 ` yunfeng zhang [this message]
2006-10-20 5:54 ` Benjamin Herrenschmidt
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