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Re: [tip:x86/asm] x86/asm: Optimize clear_page()

From Ingo Molnar <mingo@kernel.org>
Newsgroups linux.kernel
Subject Re: [tip:x86/asm] x86/asm: Optimize clear_page()
Date 2017-03-07 16:20 +0100
Message-ID <tip46-X4-27@gated-at.bofh.it> (permalink)
References <tb5MR-7Et-1@gated-at.bofh.it> <tg9d9-1fv-47@gated-at.bofh.it> <tigau-2NF-9@gated-at.bofh.it>
Organization linux.* mail to news gateway

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* Yinghai Lu <yinghai@kernel.org> wrote:

> On Wed, Mar 1, 2017 at 1:47 AM, tip-bot for Borislav Petkov
> <tipbot@zytor.com> wrote:
> > Commit-ID:  49ca7bb328c630dd43be626534b49e19513296fd
> > Gitweb:     http://git.kernel.org/tip/49ca7bb328c630dd43be626534b49e19513296fd
> > Author:     Borislav Petkov <bp@suse.de>
> > AuthorDate: Thu, 9 Feb 2017 01:34:49 +0100
> > Committer:  Ingo Molnar <mingo@kernel.org>
> > CommitDate: Wed, 1 Mar 2017 10:18:32 +0100
> >
> > x86/asm: 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.
> 
> looks like this one broke the kexec.
> after revert it back, kexec work again.

Ok, this should be fixed in the new version I just pushed out:

  f25d38475519 x86/asm: Optimize clear_page()

Please let me know if it doesn't.

Thanks,

	Ingo

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Thread

[tip:x86/asm] x86/asm: Optimize clear_page() tip-bot for Borislav Petkov <tipbot@zytor.com> - 2017-03-01 11:00 +0100
  Re: [tip:x86/asm] x86/asm: Optimize clear_page() Yinghai Lu <yinghai@kernel.org> - 2017-03-07 06:50 +0100
    Re: [tip:x86/asm] x86/asm: Optimize clear_page() Ingo Molnar <mingo@kernel.org> - 2017-03-07 16:20 +0100
      Re: [tip:x86/asm] x86/asm: Optimize clear_page() Yinghai Lu <yinghai@kernel.org> - 2017-03-07 21:10 +0100
        Re: [tip:x86/asm] x86/asm: Optimize clear_page() Ingo Molnar <mingo@kernel.org> - 2017-03-08 13:00 +0100

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