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Linux: Moving 4K Stacks Forward

“In a series of 5 patches, Jesper Juhl propsed moving 4K stacks
from a debug feature to a non-debug feature, defaulting it to be
enabled in the -mm tree. He referred back to a lengthy earlier
discussion in which he had proposed making 4K stacks the default in
the mainline kernel, then added:

“‘Based on the comments in that thread I conclude that 4KSTACKS
are not really considered a debug-only feature any longer, but the
time is not right (yet) to make them the default–and it’s
certainly not yet the time to get rid of 8K stacks…'”

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