linux-kernel - Re: [PATCH] x86/mm: Re-use the early

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Message-ID: <alpine.DEB.2.11.1410291045520.5308@nanos>
Date:	Wed, 29 Oct 2014 10:47:17 +0100 (CET)
From:	Thomas Gleixner <tglx@...utronix.de>
To:	Minfei Huang <mnfhuang@...il.com>
cc:	mingo@...hat.com, hpa@...or.com, pbonzini@...hat.com,
	akpm@...ux-foundation.org, bp@...e.de, x86@...nel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] x86/mm: Re-use the early_ioremap fixed area

On Wed, 29 Oct 2014, Minfei Huang wrote:
> diff --git a/arch/x86/include/asm/highmem.h b/arch/x86/include/asm/highmem.h
> index 302a323..49b7469 100644
> --- a/arch/x86/include/asm/highmem.h
> +++ b/arch/x86/include/asm/highmem.h
> @@ -41,9 +41,7 @@ extern unsigned long highstart_pfn, highend_pfn;
>   * FIXADDR_TOP
>   * 			fixed_addresses
>   * FIXADDR_START
> - * 			temp fixed addresses
> - * FIXADDR_BOOT_START

We should at least add a comment here which makes it clear, that
PKMAP/VMALLOC area is used for early_ioremap() during early boot.

Thanks,

	tglx
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