On Tue, Sep 19 2023 at 10:25, Linus Torvalds wrote: > PeterZ mentioned the generic entry code, which does this for the entry > path. But it actually goes much deeper: just do a > > git grep preempt_disable arch/x86/kernel > > and then do the same for some other architectures. > > Looking at alpha, for example, there *are* hits for it, so at least > some of the code there clearly *tries* to do it. But does it cover all > the required parts? If it's never been tested, I'd be surprised if > it's all just ready to go. Interestingly enough m68k has zero instances, but it supports PREEMPT on the COLDFIRE subarchitecture...
