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With this CL, if CONFIG_FPU is defined (only for Link, ATM), the EC task switcher will enable CONTROL.FPCA and expect all stack contexts to include floating point state as well as normal state (an additional 18 words). To support this, we need to increase the allocated stack space for each task. The stack sizes are already chosen empirically, so I'm just rounding them up a bit. BUG=chrome-os-partner:14766 BRANCH=Link TEST=manual There should be no noticeable change. If you run the EC command "taskinfo" you'll see the increased size each thread's stack, but everything that was working before should continue to work just fine. The additional overhead required to load and store another 18 words on each context switch is not really measurable (I tried). Change-Id: Ibaca7d7a2565285f049fda6906f32761e83207af Signed-off-by: Bill Richardson <wfrichar@chromium.org> Reviewed-on: https://gerrit.chromium.org/gerrit/34391 Reviewed-by: Vincent Palatin <vpalatin@chromium.org>