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[86.181.68.246]) by smtp.gmail.com with ESMTPSA id ffacd0b85a97d-49c5ff2be55sm15778446f8f.28.2026.11.15.01.12.19 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 15 Nov 2026 01:12:19 -0800 (PST) From: Graeme Harker To: geert@linux-m68k.org Cc: linux-m68k@lists.linux-m68k.org, linux-kernel@vger.kernel.org, tsbogend@alpha.franken.de, oak@helsinkinet.fi Subject: Re: [PATCH] m68k: irq: Fix irq numbering in m68k_setup_user_interrupt() Date: Sun, 15 Nov 2026 09:12:18 +0000 Message-ID: <20261115091218.433517-1-graeme.harker@gmail.com> X-Mailer: git-send-email 2.53.0 In-Reply-To: <20261113143731.167962-1-graeme.harker@gmail.com> References: <20261113143731.167962-1-graeme.harker@gmail.com> X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Eero Tamminen recommended the Hatari emulator to me for testing the Atari caller, so I have now done that. Hatari from Git (4894d9a), emulating a Falcon and a TT (68030 with MMU, 68882, 14 MB ST-RAM, 64 MB TT-RAM), booted through Hatari's LILO with its tools/linux/kernel.config and a small BusyBox initramfs. Kernels: m68k master 8c9ddebb300c (v7.4-rc2) with and without this patch. On both machines the two kernels boot to init with the same kernel log and the same /proc/interrupts apart from the counts: Falcon: 4, 8, 12, 13, 14, 15, 21 TT: 8, 12, 13, 14, 15, 39 all on the "atari" chip, ERR 0. That is what the code suggests: atari_init_IRQ() puts atari_irq_chip on interrupts 1 to 141 straight after the call, so on Atari the patch only stops user_irq_chip being left on interrupt 0. The Sun-3, VME and Apollo callers are still untested. Thanks to Eero for the pointer. Graeme