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[84.115.238.41]) by smtp.gmail.com with ESMTPSA id 5b1f17b1804b1-43ec17b0dbesm172015255e9.33.2025.04.08.10.55.26 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 08 Apr 2025 10:55:27 -0700 (PDT) From: Richard Weinberger To: Nikolaus Funk , xenomai@lists.linux.dev, Jan Kiszka Cc: Richard Weinberger Subject: Re: [RFC PATCH 0/5] Dovetail: Real-time Exception Handling Date: Tue, 08 Apr 2025 19:55:26 +0200 Message-ID: <3955601.ZKlY2gecqU@anvil> In-Reply-To: <4c59337c-4cfe-48b7-85bb-2410e71a642a@siemens.com> References: <20250408123423.627477-1-nikolaus.funk@sigmatek.at> <4c59337c-4cfe-48b7-85bb-2410e71a642a@siemens.com> Precedence: bulk X-Mailing-List: xenomai@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" On Dienstag, 8. April 2025 18:58 Jan Kiszka wrote: > On 08.04.25 14:34, Nikolaus Funk wrote: > > From: Richard Weinberger > >=20 > > This is the Dovetail side of the real-time exception handling > > (aka real-time signal) feature. > >=20 > > In its current form, it's a bit larger than expected because it also > > includes the signal frame helper functions. It's debatable whether > > these should be part of Dovetail or Xenomai. > >=20 > > The smaller, but much more important changes are for ARM32 and > > ARM64. These allow fast return from exception handling so that > > Xenomai can decide whether an exception should be propagated > > to Linux or not. >=20 > Is this targeting latest dovetail (6.14.y-dovetail-rebase) or something > older? Did you already look into how well backporting works? Just to > collect already information upfront. It is based on v6.14-dovetail1-rebase. So gar porting to other releases worked okay'isch. In ARM64 this changed caused a little friction: 2e8a1acea859 ("arm64: signal: Improve POR_EL0 handling to avoid uaccess fai= lures") Thanks, //richard =2D-=20 =E2=80=8B=E2=80=8B=E2=80=8B=E2=80=8B=E2=80=8Bsigma star gmbh | Eduard-Bodem= =2DGasse 6, 6020 Innsbruck, AUT UID/VAT Nr: ATU 66964118 | FN: 374287y