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Tue, 22 Sep 2026 22:05:15 -0700 (PDT) Received: from homik.search.charter.net ([2603:8002:ad40:56f0:5377:c447:908c:8a13]) by smtp.gmail.com with ESMTPSA id a92af1059eb24-144f983c5a1sm4481075c88.7.2026.09.22.22.05.14 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 22 Sep 2026 22:05:14 -0700 (PDT) From: Mariia Nikitash To: richard@nod.at, anton.ivanov@cambridgegreys.com, johannes@sipsolutions.net, alex.hung@amd.com, linux-um@lists.infradead.org Cc: Mariia Nikitash Subject: Re: [PATCH] um: fix CONFIG_GCOV for built-in code Date: Tue, 22 Sep 2026 22:05:10 -0700 Message-ID: <20260923050510.204386-1-nikitash.mariiaw@gmail.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20260727195515.2306731-1-alex.hung@amd.com> References: <20260727195515.2306731-1-alex.hung@amd.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.9.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20260922_220516_811271_A8E2D6E7 X-CRM114-Status: UNSURE ( 6.09 ) X-CRM114-Notice: Please train this message. X-BeenThere: linux-um@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-um" Errors-To: linux-um-bounces+linux-um=archiver.kernel.org@lists.infradead.org Hi Alex, I tested this while investigating GCC/GCOV coverage under UML using KUnit. Tested on: Architecture: x86_64 UML Kernel: v7.3-rc3-61-gbc77531b2a6f KUnit configs: default.config + coverage_uml.config Compilers: GCC 13.3.0 and GCC 16.2.0 With GCC 13.3, the unpatched tree produced 731 .gcno files and 0 .gcda files after the KUnit run. With the patch applied, the same run produced 731 .gcno files and 704 .gcda files, and LCOV was able to generate coverage successfully. I also reproduced the same result with GCC 16.2: without patch: 731 .gcno / 0 .gcda with patch: 731 .gcno / 704 .gcda LCOV coverage generation also completed successfully with GCC 16.2. Tested-by: Mariia Nikitash Thanks, Mariia