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Commit d69f1d7f authored by Thomas Waldecker's avatar Thomas Waldecker Committed by Benjamin Herrenschmidt
Browse files

Documentation/powerpc: Fix path to the powerpc directory 



ppc -> powerpc

Signed-off-by: default avatarThomas Waldecker <thomas.waldecker@gmail.com>
Signed-off-by: default avatarBenjamin Herrenschmidt <benh@kernel.crashing.org>
parent bf99de36

Documentation/powerpc/cpu_features.txt

+5 −5
Original line number Diff line number Diff line
@@ -11,10 +11,10 @@ split instruction and data caches, and if the CPU supports the DOZE and NAP 
sleep modes.



Detection of the feature set is simple. A list of processors can be found in

arch/ppc/kernel/cputable.c. The PVR register is masked and compared with each

value in the list. If a match is found, the cpu_features of cur_cpu_spec is

assigned to the feature bitmask for this processor and a __setup_cpu function

is called.

arch/powerpc/kernel/cputable.c. The PVR register is masked and compared with

each value in the list. If a match is found, the cpu_features of cur_cpu_spec

is assigned to the feature bitmask for this processor and a __setup_cpu

function is called.



C code may test 'cur_cpu_spec[smp_processor_id()]->cpu_features' for a

particular feature bit. This is done in quite a few places, for example
@@ -51,6 +51,6 @@ should be used in the majority of cases. 


The END_FTR_SECTION macros are implemented by storing information about this

code in the '__ftr_fixup' ELF section. When do_cpu_ftr_fixups

(arch/ppc/kernel/misc.S) is invoked, it will iterate over the records in

(arch/powerpc/kernel/misc.S) is invoked, it will iterate over the records in

__ftr_fixup, and if the required feature is not present it will loop writing

nop's from each BEGIN_FTR_SECTION to END_FTR_SECTION.