On Sat, Apr 02, 2005 at 03:44:22PM +0900, GOTO Masanori wrote: > However it just changes HWCAP value - so we need to make ld.so to > search library path using some library search path modifying > environment variable (ex: LD_LIBRARY_PATH). No, this will be fucking slow, thats why my proposal only uses them with entries in the cache file. > I think the simple shell script wrapper controlling HWCAP_MASK can > achieve the original request by Bastian. No, it does not. You have to replace any binary with this wrapper, even /sbin/init. > If an application (ex: UML and Xen) is sensitive to the > glibc's tls and so on, it should be wrapped by a script, Nothing can be done by a script, both UML and Xen are linux kernels and the behaviour within have to be changed. > BTW, I think various hwcap like "sse" should not be encouraged to use > by users and developers. As I read this, the hwcap machanism is to do this. > Sometimes speed-crazy developers want to > play with optimized libraries only changing gcc optimized options. SSE gains between 50 and 70% in this case, don't call that speed-crazy. > So we should be care to enable SSE everytime as well. You have to ask the kernel/cpu for available SSE support. Bastian -- Intuition, however illogical, is recognized as a command prerogative. -- Kirk, "Obsession", stardate 3620.7
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