ioremap returns NULL
Hi all,
my normally (on 256 MB, dual Xeon, ASUS board, .....) working driver module fails on a new box with 1 MB RAM, 2 PIII, ASUS board
For each card I ioremap() 2 * 16 MB of PCI memory space. It succeeds for the 1st card but for the 2nd card I get NULL as result. This means I cannot use the 2nd card...
Is the reason for this that the RAM is bigger?
What could I do about it?
- Build a 64 GB kernel?
- Use an other function?
- pull out sone DIMM?
- nothing?
Thanks, Bernd
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Bernd Harries [email protected] [email protected] Tel. +49 421 809 7343 priv. | MSB First! [email protected] +49 421 457 3966 offi. | Linux-m68k [email protected] +49 172 139 6054 handy | Medusa T40
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What could I do about it?
- Build a 64 GB kernel?build kernel with Himem (4Gb)
Oh, I forgot to write that the Kernel (Red Hat 7.3 with 2.14.18-3smp_custom has the 4G flag enabled..
What seems to happen is that the vitual kernel address space gets too small.(?)
Thanks, Bernd
Signature · 6 lines
Bernd Harries [email protected] [email protected] Tel. +49 421 809 7343 priv. | MSB First! [email protected] +49 421 457 3966 offi. | Linux-m68k [email protected] +49 172 139 6054 handy | Medusa T40