linux-kernel - Re: read physical address space

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Message-Id: <ABA54BF3-80CA-4035-B01E-1F785F62BB84@gmail.com>
Date:	Wed, 18 Nov 2015 00:28:01 +0800
From:	yalin wang <yalin.wang2010@...il.com>
To:	alan hopes <hopes.alan@...il.com>
Cc:	linux-kernel@...r.kernel.org
Subject: Re: read physical address space

you should access it like this:
	printk ( *(int*)kmap(pays_to_page(pays_addr)));

pays address must be mapped into virtual address before access it .
> On Nov 17, 2015, at 23:21, alan hopes <hopes.alan@...il.com> wrote:
> 
> phys_addr

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