linux-kernel - Re: [PATCH] x86, reboot: skip DMI checks if reboot set by user

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Date:	Thu, 19 Jan 2012 14:14:32 -0500
From:	Michael D Labriola <mlabriol@...b.com>
To:	"H. Peter Anvin" <hpa@...or.com>
Cc:	Alan Cox <alan@...rguk.ukuu.org.uk>,
	Kushal Koolwal <kushalkoolwal@...il.com>,
	linux-kernel@...r.kernel.org, michael.d.labriola@...il.com,
	Ingo Molnar <mingo@...e.hu>,
	Matthew Garrett <mjg59@...f.ucam.org>, support@...salogic.com,
	Thomas Gleixner <tglx@...utronix.de>, x86@...nel.org
Subject: Re: [PATCH] x86, reboot: skip DMI checks if reboot set by user

"H. Peter Anvin" <hpa@...or.com> wrote on 01/19/2012 12:52:15 PM:

> On 01/19/2012 09:46 AM, Michael D Labriola wrote:
> >
> > Random question...  why do we have a reboot_init function that does 
DMI
> > checking with reboot_dmi_table (callbacks are mostly set_bios_reboot, 
but
> > there is a single set_kbd_reboot) and also a pci_reboot_init which 
does
> > the DMI check again using a separate pci_reboot_dmi_table (all 
callbacks
> > are to set_pci_reboot)?
> >
> > Wouldn't it make more sense to do a single DMI scan using one big 
table?
> >
> 
> Yes, and such a patch would be appreciated.
> 
> The reason it is as it is dates back to before the 32-64 bit 
> unification, as far as I know.
> 
> (BIOS reboot is currently not supported on 64 bits, mainly.)

Well, that does complicate it a bit.  I'll gin something up and see what
you think.  I guess it will involve having an #ifdef CONFIG_X86_32 block
inside a single dmi_table structure for the BIOS quirks.

Actually, set_kbd_reboot is inside the current X86_32 only block, along
with the one DMI callback that uses it.  Is this correct?


---
Michael D Labriola
Electric Boat
mlabriol@...b.com
401-848-8871 (desk)
401-848-8513 (lab)
401-316-9844 (cell)


 

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