Messages in this thread | | | Date | Thu, 30 Jul 2015 09:49:43 +0200 | From | Borislav Petkov <> | Subject | Re: [PATCH v5 2/4] x86/ldt: Make modify_ldt synchronous |
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On Mon, Jul 27, 2015 at 10:29:39PM -0700, Andy Lutomirski wrote: > modify_ldt has questionable locking and does not synchronize > threads. Improve it: redesign the locking and synchronize all > threads' LDTs using an IPI on all modifications. > > This will dramatically slow down modify_ldt in multithreaded > programs, but there shouldn't be any multithreaded programs that > care about modify_ldt's performance in the first place. > > Cc: stable@vger.kernel.org > Signed-off-by: Andy Lutomirski <luto@kernel.org>
I've stared a lot at this one these days, I guess a
Reviewed-by: Borislav Petkov <bp@suse.de>
is in order.
-- Regards/Gruss, Boris.
ECO tip #101: Trim your mails when you reply. --
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