Messages in this thread | | | Date | Sun, 19 Feb 2017 14:41:09 +0100 | From | Borislav Petkov <> | Subject | Re: [PATCH -v1.1] x86: Optimize clear_page() |
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On Wed, Feb 15, 2017 at 12:19:27PM +0100, Borislav Petkov wrote: > Here's a fixed version of the breakage the 0day bot reported: > > --- > From: Borislav Petkov <bp@suse.de> > Date: Thu, 9 Feb 2017 01:34:49 +0100 > Subject: [PATCH -v1.1] x86: Optimize clear_page() > > Currently, we CALL clear_page() which then JMPs to the proper function > chosen by the alternatives. > > What we should do instead is CALL the proper function directly. (This > was something Ingo suggested a while ago). So let's do that. > > Measuring our favourite kernel build workload shows that there are no > significant changes in performance.
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> Signed-off-by: Borislav Petkov <bp@suse.de> > [ Forgot to add clobbers. ] > Reported-by: kernel test robot <fengguang.wu@intel.com>
Fengguang just confirmed too:
"Yes it works fine for 300 boots.
Tested-by: Fengguang Wu <fengguang.wu@intel.com>"
-- Regards/Gruss, Boris.
Good mailing practices for 400: avoid top-posting and trim the reply.
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