On 08/01/2018 03:34 AM, Dmitry Vyukov wrote:

On Wed, Aug 1, 2018 at 12:23 PM, Eric Dumazet [off-list ref] wrote:

quoted

On 08/01/2018 02:03 AM, Andrey Ryabinin wrote:

quoted

I can't think of any advantage in not having the constructor.

I can't see any advantage adding another indirect call,
in RETPOLINE world.

Can you please elaborate what's the problem here?
If slab ctor call have RETPOLINE, then using ctors more does not
introduce any security problems and they are not _that_ slow.

They _are_ slow, when we have dozens of them in a code path.

I object "having to add" yet another indirect call, if this can be avoided [*]

If some people want to use ctor, fine, but do not request this.

[*] This can be tricky, but worth the pain.