From mboxrd@z Thu Jan 1 00:00:00 1970 Subject: Re: [PATCH 00/17] Dovetail integration - the finals References: <87r1h57kx5.fsf@xenomai.org> From: Jan Kiszka Message-ID: Date: Sun, 13 Jun 2021 19:12:43 +0200 MIME-Version: 1.0 In-Reply-To: <87r1h57kx5.fsf@xenomai.org> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit List-Id: Discussions about the Xenomai project List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: Philippe Gerum Cc: xenomai@xenomai.org, Hongzhan Chen On 13.06.21 19:07, Philippe Gerum wrote: > > Jan Kiszka writes: > >> On top, I would also still like to understand - and ideally address >> prior to releasing a new major version - if we cannot align the ARM >> syscall ABI of Xenomai to the kernel /wrt argument passing. Now is a >> good chance to do that. > > That would be fairly simple implementation-wise, problem though: this > would require to add this change to the next I-pipe/arm releases, > invalidating all previous I-pipe releases for 3.2 in the same move. In > theory, all existing I-pipe/arm patches starting from kernel 3.10 can > run the -next branch (although it may be better to stick with 4.14+ in > practice). > 4.14 is long dead, 4.19 could be the lowest target. Yes, that might involve some some complications. Maybe we could add a feature flag for the new ABI, start with dovetail and then look into lifting 4.19 and 5.4 I-pipe. Jan -- Siemens AG, T RDA IOT Corporate Competence Center Embedded Linux