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([2001:b07:6468:f312:c8dd:75d4:99ab:290a]) by smtp.gmail.com with ESMTPSA id e17sm2311158ejh.64.2020.10.27.23.44.24 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Tue, 27 Oct 2020 23:44:24 -0700 (PDT) Subject: Re: [PATCH v2 3/6] configure: add option to enable LTO To: Daniele Buono , =?UTF-8?Q?Daniel_P=2e_Berrang=c3=a9?= References: <20201023200645.1055-1-dbuono@linux.vnet.ibm.com> <20201023200645.1055-4-dbuono@linux.vnet.ibm.com> <7aa00aba-ff8c-252a-899a-45ef4db7cc6e@redhat.com> <20201026155006.GE496050@redhat.com> <756e6060-394f-fe4a-47f2-2601b6e54a45@linux.vnet.ibm.com> <20201027151744.GF529052@redhat.com> <606b3283-25e5-329a-7d02-4d3d39383c73@linux.vnet.ibm.com> From: Paolo Bonzini Message-ID: <0b7e524f-59f5-a7b3-7e4f-608042f0bd4f@redhat.com> Date: Wed, 28 Oct 2020 07:44:23 +0100 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Thunderbird/78.3.1 MIME-Version: 1.0 In-Reply-To: <606b3283-25e5-329a-7d02-4d3d39383c73@linux.vnet.ibm.com> Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=pbonzini@redhat.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit Received-SPF: pass client-ip=216.205.24.124; envelope-from=pbonzini@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-detected-operating-system: by eggs.gnu.org: First seen = 2020/10/28 01:50:00 X-ACL-Warn: Detected OS = Linux 2.2.x-3.x [generic] [fuzzy] X-Spam_score_int: -42 X-Spam_score: -4.3 X-Spam_bar: ---- X-Spam_report: (-4.3 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, NICE_REPLY_A=-2.167, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H4=0.001, RCVD_IN_MSPIKE_WL=0.001, 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 Zheng , Alexander Bulekov , Thomas Huth , qemu-devel@nongnu.org Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" On 27/10/20 21:42, Daniele Buono wrote: > Ok, no problem. I can definitely disable the check on GCC. > > Paolo, would you like me to disable checks on AR/linker for lto too? > If so, should I add some of this information on a document, perhaps > docs/devel/lto.rst, so it is written somewhere for future uses? I am not sure of the effects. Does it simply effectively disable LTO or is it something worse? I'll look into the SCSI issue. Paolo