Re: [RFC PATCH 14/14] khwasan: default the instrumentation mode to inline

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On Fri, Mar 9, 2018 at 8:18 PM, Mark Rutland <mark.rutland@xxxxxxx> wrote:
> On Fri, Mar 09, 2018 at 07:06:59PM +0100, Andrey Konovalov wrote:
>> On Mon, Mar 5, 2018 at 3:54 PM, Mark Rutland <mark.rutland@xxxxxxx> wrote:
>>
>> Hi Mark!
>>
>> GCC before 5.0 doesn't support KASAN_INLINE, but AFAIU will fallback
>> to outline instrumentation in this case.
>>
>> Latest Clang Release doesn't support KASAN_INLINE (although current
>> trunk does) and falls back to outline instrumentation.
>>
>> So nothing should break, but people with newer compilers should get
>> the benefits of using the inline instrumentation by default.
>
> Ah, ok. I had assumed that they were separate compiler options, and this
> would result in a build failure.

No worries, I'll check that GCC 4.9 works and add this info to the
commit message.

>
> I have no strong feelings either way as to the default. I typically use
> inline today unless I'm trying to debug particularly weird cases and
> want to hack the shadow accesses.

Great!

>
> Thanks,
> Mark.




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