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Re: 64-bit sysinfo

To: mips081@vtnet.ca, linux-mips@linux-mips.org
Subject: Re: 64-bit sysinfo
From: tor@spacetec.no (Tor Arntsen)
Date: Thu, 12 Jun 2003 13:19:29 +0200
In-reply-to: Trevor Woerner <mips081@vtnet.ca> "64-bit sysinfo" (Jun 12, 12:05)
Original-recipient: rfc822;linux-mips@linux-mips.org
Sender: linux-mips-bounce@linux-mips.org
On Jun 12, 12:05, Trevor Woerner wrote:
[...]
>I compiled a 64-bit MIPS kernel, then built a busybox-based ramdisk. At 
>first I couldn't get busybox's 'init' to work but later solved it by 
>disabling the 'check_memory()' call.
>
>Further investigation into why the 'check_memory()' call was failing 
>revealed a problem with the 'sysinfo()' system call. The kernel is 
>64-bit, therefore when it fills in the 'struct sysinfo' (as it does 
>when 'sys_meminfo()' is called) unsigned int's are 64 bits. But back in 
>userspace, the 'struct sysinfo' that gets allocated thinks that 
>unsigned int's are 32 bits.
[...]

Hm, that sounds wrong to me. 'int' is supposed to be 32 bits also on
64-bit systems, only 'long' should be 64 bits.

-Tor

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