On Thu, Oct 3, 2024 at 10:21 AM Mathieu Desnoyers
wrote:
> >
> > Reviewed-by: Joel Fernandes (Google)
>
> Please double-check with -O2, and let me know if you still agree with
> the patch :)
>
You are quite right, with -O2 I can indeed see that the optimize hide
var fixes it.
FWIW:
Tested-by: J
On 2024-10-03 02:08, Joel Fernandes wrote:
On Tue, Oct 01, 2024 at 09:02:02PM -0400, Mathieu Desnoyers wrote:
Compiler CSE and SSA GVN optimizations can cause the address dependency
of addresses returned by rcu_dereference to be lost when comparing those
pointers with either constants or previou
On Tue, Oct 01, 2024 at 09:02:02PM -0400, Mathieu Desnoyers wrote:
> Compiler CSE and SSA GVN optimizations can cause the address dependency
> of addresses returned by rcu_dereference to be lost when comparing those
> pointers with either constants or previously loaded pointers.
>
> Introduce ptr_
Compiler CSE and SSA GVN optimizations can cause the address dependency
of addresses returned by rcu_dereference to be lost when comparing those
pointers with either constants or previously loaded pointers.
Introduce ptr_eq() to compare two addresses while preserving the address
dependencies for l
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