Re: [PATCH] x86/mm: Re-use the early_ioremap fixed area

From: Thomas Gleixner
Date: Wed Oct 29 2014 - 05:47:35 EST


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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