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Thu, 08 Jul 2021 12:10:03 -0700 (PDT) Received: from zen.linaroharston ([51.148.130.216]) by smtp.gmail.com with ESMTPSA id i12sm3263564wrp.57.2021.07.08.12.09.51 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 08 Jul 2021 12:10:00 -0700 (PDT) Received: from zen.lan (localhost [127.0.0.1]) by zen.linaroharston (Postfix) with ESMTP id 526901FFB7; Thu, 8 Jul 2021 20:09:45 +0100 (BST) From: =?UTF-8?q?Alex=20Benn=C3=A9e?= To: qemu-devel@nongnu.org Subject: [PATCH v2 31/39] tcg/plugins: enable by default for TCG builds Date: Thu, 8 Jul 2021 20:09:33 +0100 Message-Id: <20210708190941.16980-32-alex.bennee@linaro.org> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20210708190941.16980-1-alex.bennee@linaro.org> References: <20210708190941.16980-1-alex.bennee@linaro.org> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Received-SPF: pass client-ip=2a00:1450:4864:20::32c; envelope-from=alex.bennee@linaro.org; helo=mail-wm1-x32c.google.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: fam@euphon.net, Thomas Huth , minyihh@uci.edu, berrange@redhat.com, kuhn.chenqun@huawei.com, f4bug@amsat.org, robhenry@microsoft.com, Willian Rampazzo , mahmoudabdalghany@outlook.com, aaron@os.amperecomputing.com, cota@braap.org, Wainer dos Santos Moschetta , stefanha@redhat.com, crosa@redhat.com, pbonzini@redhat.com, ma.mandourr@gmail.com, Alexandre Iooss , =?UTF-8?q?Alex=20Benn=C3=A9e?= , aurelien@aurel32.net Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" Aside from a minor bloat to file size the ability to have TCG plugins has no real impact on performance unless a plugin is actively loaded. Even then the libempty.so plugin shows only a minor degradation in performance caused by the extra book keeping the TCG has to do to keep track of instructions. As it's a useful feature lets just enable it by default and reduce our testing matrix a little. Cc: Paolo Bonzini Reviewed-by: Thomas Huth Signed-off-by: Alex Bennée --- v2 - properly handle plugins being "" - make the test for linker support handle default case - move linker tests to before the glib-modules test v3 - remove stray debug ($plugins) --- docs/devel/tcg-plugins.rst | 3 +- configure | 125 ++++++++++++++++++++----------------- .gitlab-ci.d/buildtest.yml | 23 ------- 3 files changed, 71 insertions(+), 80 deletions(-) diff --git a/docs/devel/tcg-plugins.rst b/docs/devel/tcg-plugins.rst index 18c6581d85..0cd77c77d2 100644 --- a/docs/devel/tcg-plugins.rst +++ b/docs/devel/tcg-plugins.rst @@ -71,7 +71,8 @@ API Usage ===== -The QEMU binary needs to be compiled for plugin support:: +Any QEMU binary with TCG support has plugins enabled by default. +Earlier releases needed to be explicitly enabled with:: configure --enable-plugins diff --git a/configure b/configure index 43f4d3220a..2097fa69a0 100755 --- a/configure +++ b/configure @@ -429,7 +429,7 @@ libxml2="auto" debug_mutex="no" libpmem="auto" default_devices="true" -plugins="no" +plugins="$default_feature" fuzzing="no" rng_none="no" secret_keyring="$default_feature" @@ -3086,6 +3086,73 @@ for drv in $audio_drv_list; do esac done +########################################## +# plugin linker support probe + +if test "$plugins" != "no"; then + + ######################################### + # See if --dynamic-list is supported by the linker + + ld_dynamic_list="no" + if test "$static" = "no" ; then + cat > $TMPTXT < $TMPC < +void foo(void); + +void foo(void) +{ + printf("foo\n"); +} + +int main(void) +{ + foo(); + return 0; +} +EOF + + if compile_prog "" "-Wl,--dynamic-list=$TMPTXT" ; then + ld_dynamic_list="yes" + fi + fi + + ######################################### + # See if -exported_symbols_list is supported by the linker + + ld_exported_symbols_list="no" + if test "$static" = "no" ; then + cat > $TMPTXT < $TMPTXT < $TMPC < -void foo(void); - -void foo(void) -{ - printf("foo\n"); -} - -int main(void) -{ - foo(); - return 0; -} -EOF - - if compile_prog "" "-Wl,--dynamic-list=$TMPTXT" ; then - ld_dynamic_list="yes" - fi -fi - -######################################### -# See if -exported_symbols_list is supported by the linker - -ld_exported_symbols_list="no" -if test "$static" = "no" ; then - cat > $TMPTXT <