I'm getting the following compile error in 2.6.22-rc3-mm1 with
CONFIG_X86_CMPXCHG=n (with -Werror-implicit-function-declaration -
otherwise it would be a link error):
<-- snip -->
...
CC drivers/xen/grant-table.o
/home/bunk/linux/kernel-2.6/linux-2.6.22-rc3-mm1/drivers/xen/grant-table.c: In function ‘gnttab_end_foreign_access_ref’:
/home/bunk/linux/kernel-2.6/linux-2.6.22-rc3-mm1/drivers/xen/grant-table.c:203: error: implicit declaration of function ‘sync_cmpxchg’
make[3]: *** [drivers/xen/grant-table.o] Error 1
<-- snip -->
Adding a dependency of XEN on X86_CMPXCHG should not be a problem and
not prevent any reasonable real-life usage.
But what worries me is that a seemingly architecture independent
driver uses a function only available in some configurations.
cu
Adrian
--
"Is there not promise of rain?" Ling Tan asked suddenly out
of the darkness. There had been need of rain for many days.
"Only a promise," Lao Er said.
Pearl S. Buck - Dragon Seed
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