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Wed, 20 Aug 2025 10:22:31 -0700 (PDT) Received: from localhost ([2a00:79e0:2e14:7:635f:74c7:be17:bd29]) by smtp.gmail.com with UTF8SMTPSA id d9443c01a7336-245ed33d2a3sm32191975ad.12.2025.08.20.10.22.30 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Wed, 20 Aug 2025 10:22:30 -0700 (PDT) Date: Wed, 20 Aug 2025 10:22:29 -0700 From: Brian Norris To: David Gow Cc: Thomas Gleixner , Guenter Roeck , linux-kernel@vger.kernel.org, kunit-dev@googlegroups.com Subject: Re: [PATCH 0/6] genirq/test: Platform/architecture fixes Message-ID: References: <20250818192800.621408-1-briannorris@chromium.org> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: On Wed, Aug 20, 2025 at 03:00:34PM +0800, David Gow wrote: > Looks like __irq_alloc_descs() is returning -ENOMEM (as > irq_find_free_area() is returning 200 w/ nr_irqs == 200, and > CONFIG_SPARSE_IRQ=n). Thanks for the insight. I bothered compiling my own qemu just so I can run m68k this time, and I can reproduce. I wonder if I should make everything (CONFIG_IRQ_KUNIT_TEST) depend on CONFIG_SPARSE_IRQ, since it seems like arches like m68k can't enable SPARSE_IRQ, and they can't allocate new (fake) IRQs without it. That'd be a tweak to patch 4. Or maybe just 'depends on !M68K', since architectures with higher NR_IRQS headroom may still work even without SPARSE_IRQ. > But all of the other architectures I found worked okay, so this is at > least an improvement. Thanks for the testing. Brian