linux-kernel - Re: [PATCH 2/3 v3] resource: Add new flag IORESOURCE_MEM

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Date:	Tue, 24 Feb 2015 10:07:43 +0100
From:	Ingo Molnar <mingo@...nel.org>
To:	Boaz Harrosh <boaz@...xistor.com>
Cc:	Ingo Molnar <mingo@...hat.com>,
	Andy Lutomirski <luto@...capital.net>,
	Ross Zwisler <ross.zwisler@...ux.intel.com>,
	X86 ML <x86@...nel.org>,
	linux-kernel <linux-kernel@...r.kernel.org>,
	"Roger C. Pao" <rcpao.enmotus@...il.com>,
	Dan Williams <dan.j.williams@...el.com>,
	Thomas Gleixner <tglx@...utronix.de>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	linux-nvdimm <linux-nvdimm@...ts.01.org>,
	"H. Peter Anvin" <hpa@...or.com>,
	Matthew Wilcox <willy@...ux.intel.com>,
	Christoph Hellwig <hch@...radead.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Vivek Goyal <vgoyal@...hat.com>
Subject: Re: [PATCH 2/3 v3] resource: Add new flag IORESOURCE_MEM_WARN


* Boaz Harrosh <boaz@...xistor.com> wrote:

> --- a/kernel/resource.c
> +++ b/kernel/resource.c
> @@ -1075,8 +1075,13 @@ struct resource * __request_region(struct resource *parent,
>  			break;
>  		if (conflict != parent) {
>  			parent = conflict;
> -			if (!(conflict->flags & IORESOURCE_BUSY))
> +			if (!(conflict->flags & IORESOURCE_BUSY)) {
> +				if (conflict->flags & IORESOURCE_MEM_WARN)
> +					pr_warn("request unknown region [mem %#010llx-%#010llx] %s\n",
> +						conflict->start, conflict->end,
> +						conflict->name);

Maybe:

   'request region with unknown memory type [mem ...]'?

The driver (we hope!) very well knows about the region so 
it's not totally unknown.

Thanks,

	Ingo
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