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Date:   Wed, 23 Mar 2022 09:26:38 +0900
From:   Masami Hiramatsu <>
To:     Alexei Starovoitov <>
Cc:     "David S. Miller" <>,
        Daniel Borkmann <>,
        Peter Zijlstra <>,
        Steven Rostedt <>,
        Jakub Kicinski <>,
        Andrii Nakryiko <>,
        Linus Torvalds <>,
        Stephen Rothwell <>,
        Network Development <>,
        bpf <>, Kernel Team <>
Subject: Re: pull-request: bpf-next 2022-03-21 v2

On Tue, 22 Mar 2022 09:38:07 -0700
Alexei Starovoitov <> wrote:

> On Tue, Mar 22, 2022 at 7:32 AM Masami Hiramatsu <> wrote:
> >
> > Hi Alexei,
> >
> > So after this is merged, would you have a plan to merge the tip tree
> > which has IBT to the bpf-next? Or should I wait for merging this series
> > or IBT(ENDBR) series in Linus tree?
> >
> > If I add the no ENDBR annotation to the x86 rethook trampoline on this
> > bpf-next branch, it will cause a build error...
> Right now (after arch bits revert) there are no build errors in bpf-next
> and won't be any after the merge into Linus's tree either.
> linux-next is a proxy of what Linus's tree will look like in a few days.
> Please create a single x86 arch patch against linux-next and make sure
> Peter is happy with it.
> We will land that patch at that time.

OK, I'll make that patch on top of linux-next. That will allow us to
build the rethook correctly.

> That patch will be pretty much the same as what you had earlier
> with ENDBR annotation. And maybe regs->ss set which is future proofing
> optional bit and not a functional part of the patch.

Thank you,

Masami Hiramatsu <>

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