linux-kernel - Re: [PATCH v7 00/12] kexec kernel efi runtime support

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Date:	Sun, 22 Dec 2013 14:27:01 -0700
From:	Toshi Kani <toshi.kani@...com>
To:	Matt Fleming <matt@...sole-pimps.org>
Cc:	Dave Young <dyoung@...hat.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"linux-efi@...r.kernel.org" <linux-efi@...r.kernel.org>,
	"x86@...nel.org" <x86@...nel.org>,
	"mjg59@...f.ucam.org" <mjg59@...f.ucam.org>,
	"hpa@...or.com" <hpa@...or.com>,
	"James.Bottomley@...senPartnership.com" 
	<James.Bottomley@...senPartnership.com>,
	"vgoyal@...hat.com" <vgoyal@...hat.com>,
	"ebiederm@...ssion.com" <ebiederm@...ssion.com>,
	"horms@...ge.net.au" <horms@...ge.net.au>,
	"kexec@...ts.infradead.org" <kexec@...ts.infradead.org>,
	"bp@...en8.de" <bp@...en8.de>, "greg@...ah.com" <greg@...ah.com>,
	"akpm@...ux-foundation.org" <akpm@...ux-foundation.org>,
	"mingo@...nel.org" <mingo@...nel.org>,
	"msalter@...hat.com" <msalter@...hat.com>,
	"leif.lindholm@...aro.org" <leif.lindholm@...aro.org>
Subject: Re: [PATCH v7 00/12] kexec kernel efi runtime support

On Sat, 2013-12-21 at 17:35 +0000, Matt Fleming wrote:
> On Fri, 20 Dec, at 06:02:10PM, Dave Young wrote:
> > Here is the V7 patchset for supporting kexec kernel efi runtime.
> > Per pervious discussion I pass the 1st kernel efi runtime mapping
> > via setup_data to 2nd kernel. Besides of the runtime mapping
> > info I also pass the fw_vendor, runtime, config table, smbios
> > physical address in setup_data. EFI spec mentioned fw_vendor,
> > runtime, config table addresses will be converted to virt address
> > after entering virtual mode, but we will use it as physical address
> > in efi_init. For smbios EFI spec did not mention about the address
> > updating, but during my test on a HP workstation, the bios will
> > convert it to Virt addr, thus pass it in setup_data as well.
> 
> OK Dave, I've pulled patches 3-12 into the 'kexec' branch at,
> 
>   git://git.kernel.org/pub/scm/linux/kernel/git/mfleming/efi.git
> 
> I plan on sending this branch to the tip folks this week for further
> testing.
> 
> Please have a look and make sure I haven't messed anything up when
> dropping the first two patches (though they were very small and trival).
> 
> Toshi, if you could grab that branch and give it a test, that'd be
> excellent.

The kexec branch is missing the following change, which is required for
fast reboot with multi-cpus.

   commit 279f1df915c3a6ed3075d98a849705bf53851f99
   Author: Vivek Goyal <vgoyal@...hat.com>
   Date:   Tue Nov 26 10:25:28 2013 +0800

       kexec: migrate to reboot cpu

With this change added, I confirmed that the branch kernel works fine.

Thanks,
-Toshi

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