Re: [PATCH 0/4] x86-64: fix vclock_gettime()

[Petr Tesarik]

Andi Kleen pÃÅe v Ät 14. 05. 2009 v 14:58 +0200:
> > To rectify the situation, I saw the following options:
> > 
> >  1. Adjust pointers in the vDSO .altinstruction section during
> >     vDSO setup, and then pass it to apply_alternatives()
> >  2. List the relocations with objdump and add them again to vdso.S
> >     using the .reloc GAS directive
> >  3. Link the vDSO into the kernel with relocations, i.e. not just
> >     as a blob
> 
> 4. Just move the barriers back back into the main kernel.

Sorry, this doesn't work, because the function is inlined. And even if
it wasn't, the vDSO must be self-contained by definition. User-space
cannot simply call into kernel-space.

Cheers,
Petr Tesarik


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