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b=gKzUYSqxaBGgNd5gxW9eUjcq4PZ96vvjEs4NMcbdqrLSqfDNjhSElvgoc/dW6rXNiop6Ws UjlgjWo6pXNVSCAy4ghx0FXemqpDU4sZUzVjJtitX3nNa9W3iaor/EndTl3NJ5shj7UZVj 6poMRSC04uv/HluV0nX9t833CJRKHXZgtN2P+CYTNWYSNz0gGLLdZFx3+/KU/Ou/wMsOVV wAczaourBJNEXUR8aNp2T4WsAxepQbL2AMrov8iAyo+ESqS3OE6zpabueePR3zWx62OXfr xbyrDjD5l44qK250ElZIHuaLAnRbl4c3gNyfZ/KSkDuqU/riETcuDleM/VBCOw== Message-ID: Date: Fri, 3 Feb 2023 10:13:11 +0000 MIME-Version: 1.0 Subject: Re: Intel i7-1165G7 vulnerable to Spectre v2 Content-Language: en-US To: Tobias Geerinckx-Rice Cc: help-guix@gnu.org References: <87fsbpnzil.fsf@nckx> From: Christian Gelinek In-Reply-To: <87fsbpnzil.fsf@nckx> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit X-MBO-RS-META: fymkc91omftey5spsimziuyngxkzfpwz X-MBO-RS-ID: 292401563cfdf6bfe51 Received-SPF: pass client-ip=80.241.56.161; envelope-from=christian.gelinek@mailbox.org; helo=mout-p-103.mailbox.org X-Spam_score_int: -27 X-Spam_score: -2.8 X-Spam_bar: -- X-Spam_report: (-2.8 / 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_LOW=-0.7, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: help-guix@gnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: help-guix-bounces+larch=yhetil.org@gnu.org Sender: help-guix-bounces+larch=yhetil.org@gnu.org X-Migadu-Country: US X-Migadu-Flow: FLOW_IN ARC-Message-Signature: i=1; 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s=key1; d=yhetil.org; t=1675419253; a=rsa-sha256; cv=none; b=GZOkFU6TgBb4BxcQzE8W0LQaAE3EdqMA2idTQvJ17whLbsyUYmaWjBDyHoZX8ZRiaoQQ7n NIGk/pvO4TjhAyT2WHlg7g90oFpInPQGMtSzpIp3h0w3EbEzxFIHpQW5lxwMXmsLDJK+4h Mw9MDwQmGBUNKtzETOmyJclXM9JxPPcYvhPX9Gp5TXx9LvBplIykOeuMLKkKzGpV+HkMG8 ybGg58+ufSXh6kYWa3e7BzIZDzwW1RZlTUPvgk7TDNo+K5D1RW6hTaIaIJBcHkZQAhNa73 OJq61QA5qBeIoGo6R0xZb4eOHy08zbE3o2WXS2uzhZM4HSg2f6oMsVTc3CpRRQ== X-Migadu-Queue-Id: 79F8516A0D X-Migadu-Scanner: scn0.migadu.com Authentication-Results: aspmx1.migadu.com; dkim=pass header.d=mailbox.org header.s=mail20150812 header.b=gKzUYSqx; dmarc=pass (policy=reject) header.from=mailbox.org; spf=pass (aspmx1.migadu.com: domain of "help-guix-bounces+larch=yhetil.org@gnu.org" designates 209.51.188.17 as permitted sender) smtp.mailfrom="help-guix-bounces+larch=yhetil.org@gnu.org" X-Migadu-Spam-Score: -11.44 X-Spam-Score: -11.44 X-TUID: D9Ef3u3nirkA On 1/2/23 15:58, Tobias Geerinckx-Rice wrote: > Christian Gelinek 写道： >> Spectre v2: Vulnerable: eIBRS with unprivileged eBPF > […] >> Spectre v2: Mitigation; Enhanced IBRS, IBPB conditional, RSB filling, >> PBRSB-eIBRS SW sequence > > Does > >  $ echo 1 | sudo tee /proc/sys/kernel/unprivileged_bpf_disabled > > change this? It does, thank you! This is the updated output line of `lscpu`: Spectre v2: Mitigation; Enhanced IBRS, IBPB conditional, RSB filling, PBRSB-eIBRS SW sequence which matches the output I saw when I was running Debian 11. How can I make this change permanent, ideally surviving both reboots as well as `guix system reconfigure` invocations? Or do we think this will be soon compiled into the kernel, if I understood Remco's message [0] and your response [1] to that correctly, and therefore coming "for free" (for me, anyway) by `reconfigure`ing? Kinde regards, Christian [0]: https://lists.gnu.org/archive/html/help-guix/2023-02/msg00008.html [1]: https://lists.gnu.org/archive/html/help-guix/2023-02/msg00009.html