From: Oleg Nesterov <oleg@redhat.com>
To: "H. Peter Anvin" <hpa@zytor.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>,
Hugh Dickins <hughd@google.com>,
Peter Zijlstra <peterz@infradead.org>,
Jiri Kosina <jkosina@suse.cz>, Andi Kleen <andi@firstfloor.org>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
the arch/x86 maintainers <x86@kernel.org>,
Andi Kleen <ak@linux.intel.com>, Ingo Molnar <mingo@kernel.org>,
Borislav Petkov <bp@alien8.de>
Subject: Re: [PATCH?] uprobes: change uprobe_write_opcode() to modify the page directly
Date: Tue, 3 Dec 2013 21:38:26 +0100 [thread overview]
Message-ID: <20131203203826.GA24812@redhat.com> (raw)
In-Reply-To: <529E3D4C.9070403@zytor.com>
On 12/03, H. Peter Anvin wrote:
>
> On 12/03/2013 12:01 PM, Oleg Nesterov wrote:
> >
> >> followed by whatever synchronization necessary to make it globally visible.
> >
> > Could you explain what this synchronization should actually do ?
> >
>
> That is architecture-dependent. On x86 it requires each CPU on which
> this code is visible to be IPId, on others it involves complex icache
> flushing protocols.
Hmm. And why this would be better than arch-independent code I sent?
IOW. Could you please comment the patch I sent?
Oleg.
next prev parent reply other threads:[~2013-12-03 20:38 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
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 [this message]
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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