From: Franck Bui-Huu <vagabon.xyz@gmail.com>
To: Miguel Ojeda <maxextreme@gmail.com>
Cc: Franck Bui-Huu <vagabon.xyz@gmail.com>,
akpm@osdl.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH 2.6.19-rc1 full] drivers: add LCD support
Date: Mon, 30 Oct 2006 09:43:42 +0100 [thread overview]
Message-ID: <4545BB3E.7030503@innova-card.com> (raw)
In-Reply-To: <653402b90610271338t6e2e4d31idffefe4b6b1ce639@mail.gmail.com>
Miguel Ojeda wrote:
>
> Sorry, I meant: You can't mmap a RAM address using functions like the
> usual remap_pfn_range (as such functions doesn't like physical RAM
> addresses, they want I/O ports for example, like 0x378). So, you can't
> use smem_start. You need to code your own mmap & nopage function. (It
> is explained in LDD3 very well).
>
well I must admit that I don't understand why... I suppose you refered
to that section in ldd3:
An interesting limitation of remap_pfn_range is that it gives
access only to reserved pages and physical addresses above the
top of physical memory.
I take a quick look at the implementation of remap_pfn_range() and
there's no such limitation I can see (fortunately).
Franck
next prev parent reply other threads:[~2006-10-30 8:43 UTC|newest]
Thread overview: 29+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-10-13 2:32 [PATCH 2.6.19-rc1 full] drivers: add LCD support Miguel Ojeda Sandonis
2006-10-13 12:43 ` Paulo Marques
2006-10-18 14:55 ` Franck Bui-Huu
2006-10-23 8:41 ` Franck Bui-Huu
2006-10-23 12:56 ` Miguel Ojeda
2006-10-23 15:35 ` Franck Bui-Huu
2006-10-23 16:21 ` Miguel Ojeda
2006-10-23 16:51 ` Franck Bui-Huu
2006-10-26 14:45 ` Miguel Ojeda
2006-10-27 20:08 ` Franck Bui-Huu
2006-10-27 20:38 ` Miguel Ojeda
2006-10-30 8:43 ` Franck Bui-Huu [this message]
2006-10-30 13:35 ` Miguel Ojeda
2006-10-23 16:05 ` Franck Bui-Huu
2006-10-23 16:08 ` Miguel Ojeda
2006-10-23 17:15 ` Franck Bui-Huu
2006-10-26 14:55 ` Miguel Ojeda
2006-10-27 20:03 ` Franck Bui-Huu
2006-10-27 20:25 ` Miguel Ojeda
2006-10-30 9:26 ` Franck Bui-Huu
2006-10-30 13:22 ` Paulo Marques
2006-10-30 14:11 ` Miguel Ojeda
2006-10-30 15:21 ` Paulo Marques
2006-10-30 17:32 ` Miguel Ojeda
2006-10-30 20:45 ` Paulo Marques
2006-10-31 8:10 ` Franck Bui-Huu
2006-10-31 14:12 ` Miguel Ojeda
2006-10-31 14:54 ` Paulo Marques
2006-10-30 13:47 ` Miguel Ojeda
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