On Tue, Oct 10, 2017 at 11:39:09AM -0700, Guenter Roeck wrote: > On Tue, Oct 10, 2017 at 05:33:04PM +0200, Greg Kroah-Hartman wrote:
> > Ick, not good, why not? Surely you enable all of the options you can > > for your hardware, right? And enabling stuff like this is good no > > matter what... What I said about KASAN in the other mail applies more generally - some of the debug options are very low overhead but that's not always the case, especially when running on lower end hardware. > FWIW, I don't enable CONFIG_KASAN or my qemu test runs either, simply because > enabling it makes images all but impossible to run in qemu. Whatever KASAN > does, it seems to completely defeat qemu. It's much slower and uses a lot more memory, I'd guess either of those could be a big issue.
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