Messages in this thread | | | From | "Serge Noiraud" <> | Subject | Memory managment differences between 2.4 and 2.6 with mem= | Date | Fri, 10 Feb 2006 15:59:04 +0100 |
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Hi, In 2.4 I used to have mem=2000 on a machine with 2GB of memory. I used the differences between 2000 and 2048 for a specific driver. This means I use addresses between 0x7d000000 and 0x7fffffff. I was sure the system did not take this memory.
In 2.6 it does not work like that. In /proc/iomem the end of memory is 0x7d000000. I think this is normal. but I saw the IDE driver allocate 1KB in addresses between 0x7d000000 and 0x7d0003ff
I have some question : Is it normal ? If it is not, how to get the same functionality ? are there some new options ? Does memap= can help ? Is there any impact in the driver ?
I red mel gorman "Understanding the Linux Virtual Memory Manager", but it does not help me. In which chapter this is explained ?
-- Serge Noiraud - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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