Messages in this thread | | | Subject | Re: PCI Express support for 2.4 kernel | From | Arjan van de Ven <> | Date | Mon, 15 Dec 2003 14:15:55 +0100 |
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> I should be missing something here. You have 256M of physical address > space at 0xe0000000 occupied. > You can do nothing with it, it is simply present. Then, ioremap maps it > somewhere in high memory. > It should not conflict with kernel RAM, for which trivial mapping (+3G) > used.
the thing is that typically you have a maximum of 168Mb or so of ioremap/vmalloc space (they share the same pool). That is, ff your system has >= 1Gb of ram, if it has less ran the ioremap/vmalloc space is bigger....
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