I installed SUSE11 x86 linux on a PAE platform(linux kernal is 2.6.27.19-5-pae), then built my driver, but got the following mem_map undeclared error message. The same driver can build success in other non PAE platforms(for example, linux kernel is 2.6.27.19-5-default). Has anyone know how to fix this problem? Thanks a lot!
gcc version is 4.3.2

=============Error log======================
make -C /lib/modules/2.6.27.19-5-pae/build M=/root/LinPhlash/driver modules
make[1]: Entering directory `/usr/src/linux-2.6.27.19-5-obj/i386/pae'
make -C ../../../linux-2.6.27.19-5 O=/usr/src/linux-2.6.27.19-5-obj/i386/pae/. modules
CC [M] /root/LinPhlash/driver/Driver.o
In file included from /root/LinPhlash/driver/Driver.c:160:
/root/LinPhlash/driver/../app/linphlash.h:172:1: warning: multi-line comment
/root/LinPhlash/driver/Driver.c:210: warning: function declaration isn’t a prototype
/root/LinPhlash/driver/Driver.c: In function ‘flash_open’:
/root/LinPhlash/driver/Driver.c:437: warning: integer constant is too large for ‘long’ type
/root/LinPhlash/driver/Driver.c:438: warning: integer constant is too large for ‘long’ type
/root/LinPhlash/driver/Driver.c: In function ‘flash_ioctl’:
/root/LinPhlash/driver/Driver.c:571: warning: function declaration isn’t a prototype
/root/LinPhlash/driver/Driver.c:673: warning: assignment from incompatible pointer type
/root/LinPhlash/driver/Driver.c:703: warning: assignment makes integer from pointer without a cast
/root/LinPhlash/driver/Driver.c:705: warning: assignment makes pointer from integer without a cast
/root/LinPhlash/driver/Driver.c:705: warning: comparison between pointer and integer
/root/LinPhlash/driver/Driver.c:720: warning: integer constant is too large for ‘long’ type
/root/LinPhlash/driver/Driver.c:744: warning: integer constant is too large for ‘long’ type
/root/LinPhlash/driver/Driver.c:750: warning: integer constant is too large for ‘long’ type
/root/LinPhlash/driver/Driver.c:831: warning: passing argument 1 of ‘copy_from_user’ makes pointer from integer without a cast
/root/LinPhlash/driver/Driver.c:831: warning: passing argument 2 of ‘copy_from_user’ makes pointer from integer without a cast
/root/LinPhlash/driver/Driver.c:837: warning: passing argument 1 of ‘copy_from_user’ makes pointer from integer without a cast
/root/LinPhlash/driver/Driver.c:837: warning: passing argument 2 of ‘copy_from_user’ makes pointer from integer without a cast
/root/LinPhlash/driver/Driver.c: In function ‘flash_MapBlockTable’:
/root/LinPhlash/driver/Driver.c:1009: error: ‘mem_map’ undeclared (first use in this function)
/root/LinPhlash/driver/Driver.c:1009: error: (Each undeclared identifier is reported only once
/root/LinPhlash/driver/Driver.c:1009: error: for each function it appears in.)
/root/LinPhlash/driver/Driver.c: In function ‘flash_MapFixupTable’:
/root/LinPhlash/driver/Driver.c:1127: error: ‘mem_map’ undeclared (first use in this function)
/root/LinPhlash/driver/Driver.c: In function ‘cache_toggle’:
/root/LinPhlash/driver/Driver.c:1226: warning: comparison of distinct pointer types lacks a cast
/root/LinPhlash/driver/Driver.c:1244: warning: comparison of distinct pointer types lacks a cast
make[4]: *** [/root/LinPhlash/driver/Driver.o] Error 1
make[3]: *** [_module_/root/LinPhlash/driver] Error 2
make[2]: *** [sub-make] Error 2
make[1]: *** [all] Error 2
make[1]: Leaving directory `/usr/src/linux-2.6.27.19-5-obj/i386/pae'
make: *** [default] Error 2

Here's a quarter - go buy a 64-bit CPU.

PAE is just bad news. If you can live in 32-bit address space, do it. If you absolutely need more RAM, than go 64 bit.

IMHO .. PSM

PS:
If you're curious, take a look in your kernel source, at include/asm-generic/memory_model.h. I suspect that (might be) one of the sources of the problem ... and I'm not sure there's any easy solution.

Hi Paulsm4,

Thanks your information.
Unfortunately, PAE is our customer's shipping platform, so I must resolve the problem on PAE platform, and they also ask so.

Do you know which source causes the problem? And how to fix it?
Thanks a lot!

Steven