From: "Luck, Tony" <tony.luck@intel.com>
To: Andy Lutomirski <luto@amacapital.net>,
"Williams, Dan J" <dan.j.williams@intel.com>
Cc: Ingo Molnar <mingo@kernel.org>, Borislav Petkov <bp@alien8.de>,
Andrew Morton <akpm@linux-foundation.org>,
Andy Lutomirski <luto@kernel.org>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
"linux-mm@kvack.org" <linux-mm@kvack.org>,
linux-nvdimm <linux-nvdimm@ml01.01.org>, X86 ML <x86@kernel.org>
Subject: RE: [PATCHV2 3/3] x86, ras: Add mcsafe_memcpy() function to recover from machine checks
Date: Fri, 11 Dec 2015 22:35:17 +0000 [thread overview]
Message-ID: <3908561D78D1C84285E8C5FCA982C28F39F82F97@ORSMSX114.amr.corp.intel.com> (raw)
In-Reply-To: <CALCETrVcj=4sDaEXGNtYuq0kXLm7K9de1catqWPi25ae56g8Jg@mail.gmail.com>
> Also, are there really PCOMMIT-capable CPUs that still forcibly
> broadcast MCE? If, so, that's unfortunate.
PCOMMIT and LMCE arrive together ... though BIOS is in the decision
path to enable LMCE, so it is possible that some systems could still
broadcast if the BIOS writer decides to not allow local.
But a machine check safe copy_from_user() would be useful
current generation cpus that broadcast all the time.
-Tony
next prev parent reply other threads:[~2015-12-11 22:35 UTC|newest]
Thread overview: 40+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-12-11 19:13 [PATCHV2 0/3] Machine check recovery when kernel accesses poison Tony Luck
2015-12-10 21:58 ` [PATCHV2 1/3] x86, ras: Add new infrastructure for machine check fixup tables Tony Luck
2015-12-11 20:06 ` Andy Lutomirski
2015-12-11 21:01 ` Luck, Tony
2015-12-12 10:11 ` Borislav Petkov
2015-12-14 17:58 ` Ross Zwisler
2015-12-14 22:27 ` Borislav Petkov
2015-12-15 1:00 ` Luck, Tony
2015-12-15 9:46 ` Borislav Petkov
2015-12-15 10:44 ` Borislav Petkov
2015-12-11 0:14 ` [PATCHV2 2/3] x86, ras: Extend machine check recovery code to annotated ring0 areas Tony Luck
2015-12-11 20:08 ` Andy Lutomirski
2015-12-15 11:43 ` Borislav Petkov
2015-12-15 23:46 ` Luck, Tony
2015-12-11 0:21 ` [PATCHV2 3/3] x86, ras: Add mcsafe_memcpy() function to recover from machine checks Tony Luck
2015-12-11 20:09 ` Andy Lutomirski
2015-12-11 21:19 ` Luck, Tony
2015-12-11 21:32 ` Konrad Rzeszutek Wilk
2015-12-11 21:50 ` Andy Lutomirski
2015-12-11 22:17 ` Luck, Tony
2015-12-11 22:20 ` Dan Williams
2015-12-11 22:26 ` Andy Lutomirski
2015-12-11 22:35 ` Luck, Tony [this message]
2015-12-11 22:38 ` Andy Lutomirski
2015-12-11 22:45 ` Luck, Tony
2015-12-11 22:55 ` Andy Lutomirski
2015-12-14 8:36 ` Ingo Molnar
2015-12-14 19:46 ` Luck, Tony
2015-12-14 20:11 ` Andy Lutomirski
2015-12-15 13:11 ` Borislav Petkov
2015-12-15 17:45 ` Dan Williams
2015-12-15 17:53 ` Luck, Tony
2015-12-15 18:21 ` Borislav Petkov
2015-12-15 18:27 ` Dan Williams
2015-12-15 18:35 ` Dan Williams
2015-12-15 18:39 ` Borislav Petkov
2015-12-15 19:19 ` Elliott, Robert (Persistent Memory)
2015-12-15 19:28 ` Borislav Petkov
2015-12-15 20:25 ` Elliott, Robert (Persistent Memory)
2015-12-21 17:33 ` Borislav Petkov
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