x86: signal: use {get|put}_user_try and catch
Impact: use new framework Use {get|put}_user_try, catch, and _ex in arch/x86/kernel/signal.c. Note: this patch contains "WARNING: line over 80 characters", because when introducing new block I insert an indent to avoid mistakes by edit. Signed-off-by: NHiroshi Shimamoto <h-shimamoto@ct.jp.nec.com> Signed-off-by: NH. Peter Anvin <hpa@linux.intel.com>
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