linux-kernel - Re: [PATCH v4 05/12] efi: export more efi table variable to sysfs

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Message-ID: <20131127025345.GA11852@dhcp-16-126.nay.redhat.com>
Date:	Wed, 27 Nov 2013 10:53:45 +0800
From:	Dave Young <dyoung@...hat.com>
To:	Matt Fleming <matt@...sole-pimps.org>
Cc:	linux-kernel@...r.kernel.org, linux-efi@...r.kernel.org,
	x86@...nel.org, mjg59@...f.ucam.org, hpa@...or.com,
	James.Bottomley@...senPartnership.com, vgoyal@...hat.com,
	ebiederm@...ssion.com, horms@...ge.net.au,
	kexec@...ts.infradead.org, bp@...en8.de, greg@...ah.com,
	toshi.kani@...com
Subject: Re: [PATCH v4 05/12] efi: export more efi table variable to sysfs

On 11/26/13 at 03:57pm, Matt Fleming wrote:
> On Tue, 26 Nov, at 01:57:50PM, Dave Young wrote:
> > Export fw_vendor, runtime and config tables physical
> > addresses to /sys/firmware/efi/systab becaue kexec
> > kernel will need them.
>  
> This commit log needs updating.

Will update

> 
> > From EFI spec these 3 variables will be updated to
> > virtual address after entering virtual mode. But
> > kernel startup code will need the physical address.
> > 
> > changelog:
> > Greg: add standalone sysfs files instead of add lines to systab
> > Document them as testing ABI
> > Greg: use group attrs and is_visible
> > Boris: align comments lines
> > 
> > Signed-off-by: Dave Young <dyoung@...hat.com>
> > ---
> >  Documentation/ABI/testing/sysfs-firmware-efi | 26 ++++++++++++++++
> >  arch/x86/platform/efi/efi.c                  |  4 +++
> >  drivers/firmware/efi/efi.c                   | 44 ++++++++++++++++++++++++++++
> >  include/linux/efi.h                          |  3 ++
> >  4 files changed, 77 insertions(+)
> >  create mode 100644 Documentation/ABI/testing/sysfs-firmware-efi
> > 
> > diff --git a/Documentation/ABI/testing/sysfs-firmware-efi b/Documentation/ABI/testing/sysfs-firmware-efi
> > new file mode 100644
> > index 0000000..9252a24
> > --- /dev/null
> > +++ b/Documentation/ABI/testing/sysfs-firmware-efi
> > @@ -0,0 +1,26 @@
> > +What:		/sys/firmware/efi/fw_vendor
> > +Date:		Nov 2013
> > +Contact:	Dave Young <dyoung@...hat.org>
> 
> redhat.org eh? Typo or legit?

It's typo, will fix

> 
> > +Description:
> > +		Shows the physical address of firmware vendor in the EFI
> > +		system table.
> 
> It shows the physical address of the firmware vendor "entry" or "field"
> in the EFI system table.

Will update

> 
> > +Users:
> > +		Kexec Mailing List <kexec@...ts.infradead.org>
> 
> The "Kexec mailing list" isn't a user, kexec is.

Ok, will change to "Kexec"

Thanks for review
Dave
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