linux-kernel - Re: [PATCH v7u1 04/31] x86, 64bit, mm: add generic kernel/ident mapping helper

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Message-ID: <20130104211913.GC24228@x1.alien8.de>
Date:	Fri, 4 Jan 2013 22:19:15 +0100
From:	Borislav Petkov <bp@...en8.de>
To:	Yinghai Lu <yinghai@...nel.org>
Cc:	Thomas Gleixner <tglx@...utronix.de>, Ingo Molnar <mingo@...e.hu>,
	"H. Peter Anvin" <hpa@...or.com>,
	"Eric W. Biederman" <ebiederm@...ssion.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Jan Kiszka <jan.kiszka@....de>,
	Jason Wessel <jason.wessel@...driver.com>,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH v7u1 04/31] x86, 64bit, mm: add generic kernel/ident
 mapping helper

On Thu, Jan 03, 2013 at 04:48:24PM -0800, Yinghai Lu wrote:
> +int kernel_mapping_init(pgd_t *pgd_page, unsigned long addr, unsigned long end)
> +{
> +	struct x86_mapping_info info = {
> +		.alloc_pgt_page	= alloc_pgt_page,
> +		.pmd_flag	= __PAGE_KERNEL_LARGE,
> +		.kernel_mapping	= true,
> +	};
> +
> +	return kernel_ident_mapping_init(&info, pgd_page, addr, end);

This patch looks good so far except this:
kernel_ident_mapping_init says it initializes ident mapping but
this is wrong and the type of mapping is actually controlled by
info.kernel_mapping.

So this function which gets &info, etc should be called
kernel_mapping_init, AFAICT. And wrt the one wrapping
kernel_ident_mapping_init, I can't seem to find where it is called.
What's up?

Thanks.

-- 
Regards/Gruss,
Boris.
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