Re: [Qemu-devel] [PATCH 03/22] cputlb: bring back tlb_flush_count under !TLB_DEBUG

[Emilio G. Cota]

On Sun, Jul 09, 2017 at 10:00:01 -1000, Richard Henderson wrote:
> On 07/08/2017 09:49 PM, Emilio G. Cota wrote:
> >+    atomic_set(&env->tlb_flush_count, env->tlb_flush_count + 1);
> 
> Want atomic_read here, so they're all the same.

It's not needed. Note that this thread is the only one ever writing
to env->tlb_flush_count, so the thread can read this value without
atomic accesses.

You'll see this pattern all across the patchset.

Thanks,

                E.