From: Chris Metcalf Date: Mon, 30 Mar 2015 20:33:00 +0000 (-0400) Subject: tile: nohz: warn if nohz_full uses hypervisor shared cores X-Git-Tag: omap-for-v4.1/fixes-rc1~110^2 X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=128f3cb9398b5eeb4ee04b60bd5e314f5c122821;p=pandora-kernel.git tile: nohz: warn if nohz_full uses hypervisor shared cores The "hypervisor shared" cores are ones that the Tilera hypervisor uses to receive interrupts to manage hypervisor-owned devices. It's a bad idea to try to use those cores with nohz_full, since they will get interrupted unpredictably -- and invisibly to Linux tracing tools, since the interrupts are delivered at a higher privilege level to the Tilera hypervisor. Generate a clear warning at boot up that this doesn't end well for the nohz_full cores in question. Signed-off-by: Chris Metcalf --- Reading git-diff-tree failed