From: Tony Luck <tony.luck@gmail.com> To: Andy Lutomirski <luto@amacapital.net> Cc: linux-nvdimm <linux-nvdimm@ml01.01.org>, Dan Williams <dan.j.williams@intel.com>, Borislav Petkov <bp@alien8.de>, "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>, Andrew Morton <akpm@linux-foundation.org>, Robert <elliott@hpe.com>, Ingo Molnar <mingo@kernel.org>, "linux-mm@kvack.org" <linux-mm@kvack.org>, X86 ML <x86@kernel.org> Subject: Re: [PATCH v8 3/3] x86, mce: Add __mcsafe_copy() Date: Sat, 9 Jan 2016 09:48:02 -0800 [thread overview] Message-ID: <CA+8MBbL5Cwxjr_vtfE5n+XHPknFK4QMC3QNwaif5RvWo-eZATQ@mail.gmail.com> (raw) In-Reply-To: <CALCETrVqn58pMkMc09vbtNdbU2VFtQ=W8APZ0EqtLCh3JGvxoA@mail.gmail.com> On Fri, Jan 8, 2016 at 5:49 PM, Andy Lutomirski <luto@amacapital.net> wrote: > On Jan 8, 2016 4:19 PM, "Tony Luck" <tony.luck@intel.com> wrote: >> >> Make use of the EXTABLE_FAULT exception table entries. This routine >> returns a structure to indicate the result of the copy: > > Perhaps this is silly, but could we make this feature depend on ERMS > and thus make the code a lot simpler? ERMS? > Also, what's the sfence for? You don't seem to be using any > non-temporal operations. Ah - left over from the original function that this was cloned from (which did use non-temporal operations). Will delete. -Tony
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From: Tony Luck <tony.luck@gmail.com> To: Andy Lutomirski <luto@amacapital.net> Cc: linux-nvdimm <linux-nvdimm@ml01.01.org>, Dan Williams <dan.j.williams@intel.com>, Borislav Petkov <bp@alien8.de>, "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>, Andrew Morton <akpm@linux-foundation.org>, Robert <elliott@hpe.com>, Ingo Molnar <mingo@kernel.org>, "linux-mm@kvack.org" <linux-mm@kvack.org>, X86 ML <x86@kernel.org> Subject: Re: [PATCH v8 3/3] x86, mce: Add __mcsafe_copy() Date: Sat, 9 Jan 2016 09:48:02 -0800 [thread overview] Message-ID: <CA+8MBbL5Cwxjr_vtfE5n+XHPknFK4QMC3QNwaif5RvWo-eZATQ@mail.gmail.com> (raw) In-Reply-To: <CALCETrVqn58pMkMc09vbtNdbU2VFtQ=W8APZ0EqtLCh3JGvxoA@mail.gmail.com> On Fri, Jan 8, 2016 at 5:49 PM, Andy Lutomirski <luto@amacapital.net> wrote: > On Jan 8, 2016 4:19 PM, "Tony Luck" <tony.luck@intel.com> wrote: >> >> Make use of the EXTABLE_FAULT exception table entries. This routine >> returns a structure to indicate the result of the copy: > > Perhaps this is silly, but could we make this feature depend on ERMS > and thus make the code a lot simpler? ERMS? > Also, what's the sfence for? You don't seem to be using any > non-temporal operations. Ah - left over from the original function that this was cloned from (which did use non-temporal operations). Will delete. -Tony -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@kvack.org"> email@kvack.org </a>
next prev parent reply other threads:[~2016-01-09 17:48 UTC|newest] Thread overview: 72+ messages / expand[flat|nested] mbox.gz Atom feed top 2016-01-09 0:04 [PATCH v8 0/3] Machine check recovery when kernel accesses poison Tony Luck 2016-01-09 0:04 ` Tony Luck 2015-12-31 19:40 ` [PATCH v8 2/3] x86, mce: Check for faults tagged in EXTABLE_CLASS_FAULT exception table entries Tony Luck 2015-12-31 19:40 ` Tony Luck 2016-01-08 20:49 ` [PATCH v8 1/3] x86: Expand exception table to allow new handling options Tony Luck 2016-01-08 20:49 ` Tony Luck 2016-01-09 1:52 ` Andy Lutomirski 2016-01-09 1:52 ` Andy Lutomirski 2016-01-09 3:39 ` Brian Gerst 2016-01-09 3:39 ` Brian Gerst 2016-01-09 4:31 ` Brian Gerst 2016-01-09 4:31 ` Brian Gerst 2016-01-09 6:36 ` Andy Lutomirski 2016-01-09 6:36 ` Andy Lutomirski 2016-01-11 23:09 ` Brian Gerst 2016-01-11 23:09 ` Brian Gerst 2016-01-11 23:22 ` Andy Lutomirski 2016-01-11 23:22 ` Andy Lutomirski 2016-01-11 23:48 ` Luck, Tony 2016-01-11 23:48 ` Luck, Tony 2016-01-09 17:45 ` Tony Luck 2016-01-09 17:45 ` Tony Luck 2016-01-09 18:00 ` Andy Lutomirski 2016-01-09 18:00 ` Andy Lutomirski 2016-01-09 19:51 ` Tony Luck 2016-01-09 19:51 ` Tony Luck 2016-01-09 22:32 ` Andy Lutomirski 2016-01-09 22:32 ` Andy Lutomirski 2016-01-10 1:15 ` Tony Luck 2016-01-10 1:15 ` Tony Luck 2016-01-11 0:25 ` Luck, Tony 2016-01-11 0:25 ` Luck, Tony 2016-01-08 21:18 ` [PATCH v8 3/3] x86, mce: Add __mcsafe_copy() Tony Luck 2016-01-08 21:18 ` Tony Luck 2016-01-09 1:49 ` Andy Lutomirski 2016-01-09 1:49 ` Andy Lutomirski 2016-01-09 17:48 ` Tony Luck [this message] 2016-01-09 17:48 ` Tony Luck 2016-01-09 17:57 ` Andy Lutomirski 2016-01-09 17:57 ` Andy Lutomirski 2016-01-09 19:39 ` Tony Luck 2016-01-09 19:39 ` Tony Luck 2016-01-09 22:15 ` Dan Williams 2016-01-09 22:15 ` Dan Williams 2016-01-09 22:33 ` Andy Lutomirski 2016-01-09 22:33 ` Andy Lutomirski 2016-01-10 0:23 ` Dan Williams 2016-01-10 0:23 ` Dan Williams 2016-01-10 1:40 ` Tony Luck 2016-01-10 1:40 ` Tony Luck 2016-01-10 11:26 ` Borislav Petkov 2016-01-10 11:26 ` Borislav Petkov 2016-01-11 10:44 ` Ingo Molnar 2016-01-11 10:44 ` Ingo Molnar 2016-01-13 23:22 ` Tony Luck 2016-01-13 23:22 ` Tony Luck 2016-01-14 4:39 ` Borislav Petkov 2016-01-14 4:39 ` Borislav Petkov 2016-01-30 0:35 ` Tony Luck 2016-01-30 0:35 ` Tony Luck 2016-01-30 10:28 ` Borislav Petkov 2016-01-30 10:28 ` Borislav Petkov 2016-02-01 23:10 ` Tony Luck 2016-02-01 23:10 ` Tony Luck 2016-02-01 23:16 ` Dan Williams 2016-02-01 23:16 ` Dan Williams 2016-01-12 0:26 ` Luck, Tony 2016-01-12 0:26 ` Luck, Tony 2016-01-12 0:30 ` Andy Lutomirski 2016-01-12 0:30 ` Andy Lutomirski 2016-01-12 0:37 ` Andy Lutomirski 2016-01-12 0:37 ` Andy Lutomirski
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