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From: Andi Kleen <andi@firstfloor.org>
To: Oleg Nesterov <oleg@redhat.com>
Cc: Andi Kleen <andi@firstfloor.org>,
	linux-kernel@vger.kernel.org, torvalds@linux-foundation.org,
	x86@kernel.org, Andi Kleen <ak@linux.intel.com>,
	"H. Peter Anvin" <hpa@zytor.com>, Ingo Molnar <mingo@kernel.org>,
	Borislav Petkov <bp@alien8.de>
Subject: Re: [PATCH] Add a text_poke syscall v2
Date: Fri, 29 Nov 2013 20:54:19 +0100	[thread overview]
Message-ID: <20131129195419.GB17656@two.firstfloor.org> (raw)
In-Reply-To: <20131129183558.GA9803@redhat.com>

Hi Oleg,

Thanks for finding all these problems.

> We are going to change this user page, it seems that we need
> set_page_dirty() ?

That's true. Will add it next rev.

> 
> Andi, et al. I am going to discuss the things I do not really
> understand, probably this can't make any sense, but...

I think it's enough to set the dirty bit in the underlying
struct page, no need to play games with the PTE.

-Andi

-- 
ak@linux.intel.com -- Speaking for myself only.

  reply	other threads:[~2013-11-29 19:54 UTC|newest]

Thread overview: 65+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2013-11-26  0:37 [PATCH] Add a text_poke syscall v2 Andi Kleen
2013-11-26 19:05 ` Andy Lutomirski
2013-11-26 19:11   ` Andi Kleen
2013-11-26 20:03   ` Linus Torvalds
2013-11-27 19:57     ` H. Peter Anvin
2013-11-27 22:02       ` H. Peter Anvin
2013-11-27 22:21         ` Andy Lutomirski
2013-11-27 22:21         ` Borislav Petkov
2013-11-27 22:24           ` H. Peter Anvin
2013-11-27 22:25           ` H. Peter Anvin
2013-11-27 22:29             ` Borislav Petkov
2013-11-27 22:31               ` H. Peter Anvin
2013-11-27 23:04                 ` Linus Torvalds
2013-11-27 23:13                   ` Borislav Petkov
2013-11-27 22:40               ` H. Peter Anvin
2013-11-27 23:10                 ` Borislav Petkov
2013-11-27 23:20                   ` H. Peter Anvin
2013-11-27 23:40                     ` Borislav Petkov
2013-11-27 23:47                       ` H. Peter Anvin
2013-11-27 22:41         ` Linus Torvalds
2013-11-27 22:53           ` H. Peter Anvin
2013-11-27 23:15             ` Linus Torvalds
2013-11-27 23:28               ` H. Peter Anvin
2013-11-28  2:01                 ` Linus Torvalds
2013-11-28  2:10                   ` H. Peter Anvin
2013-11-28  9:12                   ` Jiri Kosina
2013-11-27 23:44               ` Andi Kleen
2013-11-29 18:35 ` Oleg Nesterov
2013-11-29 19:54   ` Andi Kleen [this message]
2013-11-29 20:05     ` Oleg Nesterov
2013-11-29 20:17       ` H. Peter Anvin
2013-11-29 20:35         ` Oleg Nesterov
2013-11-29 21:24           ` H. Peter Anvin
2013-11-30 14:56             ` Oleg Nesterov
2013-11-29 23:24       ` Jiri Kosina
2013-11-30  0:22         ` Linus Torvalds
2013-12-03 18:49           ` [PATCH?] uprobes: change uprobe_write_opcode() to modify the page directly Oleg Nesterov
2013-12-03 19:00             ` Linus Torvalds
2013-12-03 19:20               ` H. Peter Anvin
2013-12-03 20:01                 ` Oleg Nesterov
2013-12-03 20:21                   ` H. Peter Anvin
2013-12-03 20:38                     ` Oleg Nesterov
2013-12-03 20:43                       ` H. Peter Anvin
2013-12-03 20:54                         ` Oleg Nesterov
2013-12-03 22:01                           ` Linus Torvalds
2013-12-03 23:47                             ` H. Peter Anvin
2013-12-04 11:30                               ` Oleg Nesterov
2013-12-04 11:11                             ` Oleg Nesterov
2013-12-04 16:01                               ` H. Peter Anvin
2013-12-04 16:48                                 ` Oleg Nesterov
2013-12-04 16:54                                   ` H. Peter Anvin
2013-12-04 17:15                                     ` Linus Torvalds
2013-12-04 17:43                                       ` Oleg Nesterov
2013-12-05 17:23                                         ` Oleg Nesterov
2013-12-05 17:49                                           ` Borislav Petkov
2013-12-05 18:45                                             ` Oleg Nesterov
2013-12-04 18:32                                       ` H. Peter Anvin
2013-12-05  8:28                                       ` Jon Medhurst (Tixy)
2013-12-03 22:42                           ` H. Peter Anvin
2013-12-03 19:53               ` Oleg Nesterov
2013-11-30 15:20         ` [PATCH] Add a text_poke syscall v2 Oleg Nesterov
2013-11-30 16:51         ` Oleg Nesterov
2013-11-30 17:31           ` Oleg Nesterov
2013-11-30  5:16       ` H. Peter Anvin
2013-11-30 14:52         ` Oleg Nesterov

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