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Re: [Xen-devel] [RFC PATCH] Adding support for coverage informations

On 29/01/13 11:41, Jan Beulich wrote:
>>>> On 29.01.13 at 11:56, Ian Campbell <Ian.Campbell@xxxxxxxxxx> wrote:
>> We might have some checks in the tree to ensure that non-init code
>> cannot reference init code by mistake -- maybe that's what broke the
>> build for you?
> No, (sadly) we don't have such checks in place.
> Jan

Linux has such checks.  Would it be possible to beg/steal/borrow it in a
useful fashion?

With regards to the reentrant NMI issue, I was considering introducing
__nmi and __mce tags in a similar way to __init.

At one level, simply having the tags as noops to the compiler would at
least make programmers consider the implication of what they are
inserting into the codepaths, but if there is the ability to have
compiler checks to verify a base level of sanity, that is even better.


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