From: Borislav Petkov <bp@alien8.de>
To: "H. Peter Anvin" <hpa@zytor.com>
Cc: Dave Hansen <dave.hansen@linux.intel.com>,
One Thousand Gnomes <gnomes@lxorguk.ukuu.org.uk>,
Lukasz Anaczkowski <lukasz.anaczkowski@intel.com>,
linux-kernel@vger.kernel.org, linux-mm@kvack.org,
tglx@linutronix.de, mingo@redhat.com, ak@linux.intel.com,
kirill.shutemov@linux.intel.com, mhocko@suse.com,
akpm@linux-foundation.org, harish.srinivasappa@intel.com,
lukasz.odzioba@intel.com, grzegorz.andrejczuk@intel.com,
lukasz.daniluk@intel.com
Subject: Re: [PATCH v2] Linux VM workaround for Knights Landing A/D leak
Date: Tue, 14 Jun 2016 23:02:55 +0200 [thread overview]
Message-ID: <20160614210255.GM30015@pd.tnic> (raw)
In-Reply-To: <eccd473b-d3d6-3fe2-69c2-69b69729f721@zytor.com>
On Tue, Jun 14, 2016 at 01:54:25PM -0700, H. Peter Anvin wrote:
> There was that. It is still possible that we end up with NOP a JMP
> right before another JMP; we could perhaps make the patching code
> smarter and see if we have a JMP immediately after.
Yeah, I still can't get reproduce that reliably - I remember seeing it
at some point but then dismissing it for another, higher-prio thing. And
now the whole memory is hazy at best.
But, you're giving me a great idea right now - I have this kernel
disassembler tool which dumps alternative sections already and I could
teach it to look for pathological cases around the patching sites and
scream.
Something for my TODO list when I get a quiet moment.
Thanks!
--
Regards/Gruss,
Boris.
ECO tip #101: Trim your mails when you reply.
next prev parent reply other threads:[~2016-06-14 21:03 UTC|newest]
Thread overview: 38+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-06-14 15:58 [PATCH] Linux VM workaround for Knights Landing A/D leak Lukasz Anaczkowski
2016-06-14 16:31 ` kbuild test robot
2016-06-14 16:47 ` Nadav Amit
2016-06-14 16:54 ` Anaczkowski, Lukasz
2016-06-14 17:01 ` [PATCH v2] " Lukasz Anaczkowski
2016-06-14 17:24 ` Dave Hansen
2016-06-14 18:34 ` One Thousand Gnomes
2016-06-14 18:54 ` Dave Hansen
2016-06-14 19:19 ` Borislav Petkov
2016-06-14 20:20 ` H. Peter Anvin
2016-06-14 20:47 ` Borislav Petkov
2016-06-14 20:54 ` H. Peter Anvin
2016-06-14 21:02 ` Borislav Petkov [this message]
2016-06-14 21:08 ` H. Peter Anvin
2016-06-14 21:13 ` H. Peter Anvin
2016-06-14 18:10 ` Borislav Petkov
2016-06-15 13:12 ` Anaczkowski, Lukasz
2016-06-14 18:38 ` Nadav Amit
2016-06-15 13:12 ` Anaczkowski, Lukasz
2016-06-15 20:04 ` Nadav Amit
2016-06-15 20:10 ` Dave Hansen
2016-06-15 20:26 ` Nadav Amit
2016-06-16 15:14 ` [PATCH v3] " Lukasz Anaczkowski
2016-06-16 16:43 ` Nadav Amit
2016-06-16 20:23 ` Dave Hansen
2016-06-14 17:18 ` [PATCH] " Dave Hansen
2016-06-14 20:16 ` Nadav Amit
2016-06-14 21:37 ` Dave Hansen
2016-06-15 2:20 ` Andy Lutomirski
2016-06-15 2:35 ` Nadav Amit
2016-06-15 2:36 ` Andy Lutomirski
2016-06-15 2:44 ` Nadav Amit
2016-06-15 3:09 ` Andy Lutomirski
2016-06-15 3:20 ` Nadav Amit
2016-06-14 16:58 ` kbuild test robot
2016-06-14 17:19 ` Dave Hansen
2016-06-15 13:06 ` Anaczkowski, Lukasz
2016-06-14 17:47 ` kbuild test robot
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