linux-kernel - Re: [PATCH 1/4] x86, ptdump: Add the functionality to dump an arbitrary pagetable

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Message-ID: <20140113101822.GA5388@pd.tnic>
Date:	Mon, 13 Jan 2014 11:18:22 +0100
From:	Borislav Petkov <bp@...en8.de>
To:	Dave Young <dyoung@...hat.com>
Cc:	Linux EFI <linux-efi@...r.kernel.org>,
	LKML <linux-kernel@...r.kernel.org>,
	Borislav Petkov <bp@...e.de>,
	Arjan van de Ven <arjan@...ux.intel.com>,
	Matt Fleming <matt@...sole-pimps.org>,
	Matthew Garrett <mjg59@...f.ucam.org>,
	"H. Peter Anvin" <hpa@...or.com>, Toshi Kani <toshi.kani@...com>
Subject: Re: [PATCH 1/4] x86, ptdump: Add the functionality to dump an
 arbitrary pagetable

On Mon, Jan 13, 2014 at 01:32:40PM +0800, Dave Young wrote:
> pr_info? This is for debug purpose, maybe pr_debug is better?

I hate pr_debug as it depends on other defines I have to have defined
properly in order just so I get output.

> How about do not limit to only if (pgd) case, instead do something
> like below: set dump_to_dmesg as a module parameter

X86_PTDUMP is not a module.

And even though the idea to make the efi pagetable dumpable with a
kernel cmdline parameter doesn't sound all that bad, I'd like to hold
off on adding yet another efi= cmdline option and only do so until it is
really needed.

Thanks.

-- 
Regards/Gruss,
    Boris.

Sent from a fat crate under my desk. Formatting is fine.
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