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Groups > linux.kernel > #1207930

More hw_breakpoint scariness reduction

From Andy Lutomirski <luto@amacapital.net>
Newsgroups linux.kernel
Subject More hw_breakpoint scariness reduction
Date 2015-08-15 00:40 +0200
Message-ID <pXvNM-7b2-15@gated-at.bofh.it> (permalink)
Organization linux.* mail to news gateway

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Would you all consider it acceptable to disallow watchpoints on per
cpu data entirely?  I can think of a *lot* of places where hitting #DB
when accessing per cpu data from entry asm would be bad.

Of course, actually implementing that might be less than entirely fun,
given that a cpu could be onlined after creating a watchpoint.

--Andy

-- 
Andy Lutomirski
AMA Capital Management, LLC
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More hw_breakpoint scariness reduction Andy Lutomirski <luto@amacapital.net> - 2015-08-15 00:40 +0200
  Re: More hw_breakpoint scariness reduction Frederic Weisbecker <fweisbec@gmail.com> - 2015-08-15 19:00 +0200

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