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2007-02-13[PATCH] i386: Remove unused kernel config option X86_XADDRobert P. J. Day
Remove the unused kernel config option X86_XADD, which is unused in any source or header file. Signed-off-by: Robert P. J. Day <rpjday@mindspring.com> Signed-off-by: Andi Kleen <ak@suse.de> Cc: Andi Kleen <ak@muc.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2006-12-08[PATCH] LOG2: Implement a general integer log2 facility in the kernelDavid Howells
This facility provides three entry points: ilog2() Log base 2 of unsigned long ilog2_u32() Log base 2 of u32 ilog2_u64() Log base 2 of u64 These facilities can either be used inside functions on dynamic data: int do_something(long q) { ...; y = ilog2(x) ...; } Or can be used to statically initialise global variables with constant values: unsigned n = ilog2(27); When performing static initialisation, the compiler will report "error: initializer element is not constant" if asked to take a log of zero or of something not reducible to a constant. They treat negative numbers as unsigned. When not dealing with a constant, they fall back to using fls() which permits them to use arch-specific log calculation instructions - such as BSR on x86/x86_64 or SCAN on FRV - if available. [akpm@osdl.org: MMC fix] Signed-off-by: David Howells <dhowells@redhat.com> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Paul Mackerras <paulus@samba.org> Cc: Herbert Xu <herbert@gondor.apana.org.au> Cc: David Howells <dhowells@redhat.com> Cc: Wojtek Kaniewski <wojtekka@toxygen.net> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-12-07[PATCH] i386: Add support for compilation for Core2Andi Kleen
gcc doesn't support -mtune=core2 yet, but will be soon. Use -mtune=generic or -mtune=i686 as fallback TBD need benchmarking for INTEL_USERCOPY etc. So far I used the same defaults as MPENTIUMM Signed-off-by: Andi Kleen <ak@suse.de>
2006-10-11[PATCH] uml: fix processor selection to exclude unsupported processors and ↵Paolo 'Blaisorblade' Giarrusso
features Makes UML compile on any possible processor choice. The two problems were: *) x86 code, when 386 is selected, checks at runtime boot_cpuflags, which we do not have. *) 3Dnow support for memcpy() et al. does not compile currently and fixing this is not trivial, so simply disable it; with this change, if one selects MK7 UML compiles (while it did not). Signed-off-by: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it> Cc: Jeff Dike <jdike@addtoit.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-06-26i386: Trivial typo fixesEgry Gabor
Trivial typo fixes in Kconfig files (i386). Signed-off-by: Egry Gabor <gaboregry@t-online.hu> Signed-off-by: Adrian Bunk <bunk@stusta.de>
2006-04-11[PATCH] Enable TSC for AMD Geode GX/LXJordan Crouse
Geode GX/LX should enable X86_TSC. Pointed out by Adrian Bunk. Signed-off-by: Jordan Crouse <jordan.crouse@amd.com> Signed-off-by: Adrian Bunk <bunk@stusta.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-01-06[PATCH] Base support for AMD Geode GX/LX processorsJordan Crouse
Provide basic support for the AMD Geode GX and LX processors. Signed-off-by: Jordan Crouse <jordan.crouse@amd.com> Cc: Alan Cox <alan@lxorguk.ukuu.org.uk> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-10-30[PATCH] uml: reuse i386 cpu-specific tuningPaolo 'Blaisorblade' Giarrusso
Make UML share the underlying cpu-specific tuning done on i386. Actually, for now many config options aren't used a lot - but that can be done later. Also, UML relies on GCC optimization for things like memcpy and such more than i386, so specifying the correct -march and -mtune should be enough. Later, we may want to correct some other stuff. For instance, since FPU context switching, for us, is done (at least partially, i.e. between our kernelspace and userspace) by the host, we may allow usage of FPU operations by GCC. This doesn't hold for kernelspace vs. kernelspace, but we don't support preemption. Signed-off-by: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>