linux-kernel - Re: [PATCH v2 0/6] powerpc64/bpf: Support tailcalls with subprogs & BPF exceptions

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Message-ID: <3bc63f36-a732-43d8-8f65-43d532adcd68@kernel.org>
Date: Wed, 14 Jan 2026 13:28:55 +0100
From: "Christophe Leroy (CS GROUP)" <chleroy@...nel.org>
To: adubey@...ux.ibm.com, bpf@...r.kernel.org, linuxppc-dev@...ts.ozlabs.org,
 linux-kselftest@...r.kernel.org, linux-kernel@...r.kernel.org
Cc: hbathini@...ux.ibm.com, sachinpb@...ux.ibm.com, venkat88@...ux.ibm.com,
 andrii@...nel.org, eddyz87@...il.com, mykolal@...com, ast@...nel.org,
 daniel@...earbox.net, martin.lau@...ux.dev, song@...nel.org,
 yonghong.song@...ux.dev, john.fastabend@...il.com, kpsingh@...nel.org,
 sdf@...ichev.me, haoluo@...gle.com, jolsa@...nel.org, naveen@...nel.org,
 maddy@...ux.ibm.com, mpe@...erman.id.au, npiggin@...il.com,
 memxor@...il.com, iii@...ux.ibm.com, shuah@...nel.org
Subject: Re: [PATCH v2 0/6] powerpc64/bpf: Support tailcalls with subprogs &
 BPF exceptions



Le 14/01/2026 à 12:44, adubey@...ux.ibm.com a écrit :
> From: Abhishek Dubey <adubey@...ux.ibm.com>
> 
> This patch series enables support for two BPF JIT features
> on powerpc64. The first three patches target support for
> tail calls with subprogram combinations. The first patch
> supports realignment of tail_call_cnt offset in stack frame.
> Implementation details are provided in the commit messages.

Did you consider doing it also for powerpc32 ?

Christophe