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[82.49.69.7]) by smtp.gmail.com with ESMTPSA id la23-20020a170906ad9700b00a5224d9a596sm148108ejb.11.2024.04.10.23.30.41 for (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 10 Apr 2024 23:30:41 -0700 (PDT) From: Andrea Righi To: kernel-team@lists.ubuntu.com Subject: [N/U][PATCH 11/11] UBUNTU: [Config] enable spectre_bhi=auto by default Date: Thu, 11 Apr 2024 08:24:24 +0200 Message-ID: <20240411063027.493165-12-andrea.righi@canonical.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20240411063027.493165-1-andrea.righi@canonical.com> References: <20240411063027.493165-1-andrea.righi@canonical.com> MIME-Version: 1.0 X-BeenThere: kernel-team@lists.ubuntu.com X-Mailman-Version: 2.1.20 Precedence: list List-Id: Kernel team discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: kernel-team-bounces@lists.ubuntu.com Sender: "kernel-team" BugLink: https://bugs.launchpad.net/bugs/2060909 Set Branch History Injection (BHI) mitigation to auto by default. This will rely on the BHI_DIS_S hardware control, if it's available on the system CPUs, otherwise a proper software sequence will be deployed at VMexit to mitigate BHI. This setting can be overridden at boot time via spectre_bhi=on|off|auto. Signed-off-by: Andrea Righi --- debian.master/config/annotations | 3 +++ 1 file changed, 3 insertions(+) diff --git a/debian.master/config/annotations b/debian.master/config/annotations index b4f2872207bf..702fca42e937 100644 --- a/debian.master/config/annotations +++ b/debian.master/config/annotations @@ -13228,6 +13228,9 @@ CONFIG_SPEAKUP_SYNTH_LTLK policy<{'amd64': 'm', 'arm64': ' CONFIG_SPEAKUP_SYNTH_SOFT policy<{'amd64': 'm', 'arm64': 'm', 'armhf': 'm', 'ppc64el': 'm'}> CONFIG_SPEAKUP_SYNTH_SPKOUT policy<{'amd64': 'm', 'arm64': 'm', 'armhf': 'm', 'ppc64el': 'm'}> CONFIG_SPEAKUP_SYNTH_TXPRT policy<{'amd64': 'm', 'arm64': 'm', 'armhf': 'm', 'ppc64el': 'm'}> +CONFIG_SPECTRE_BHI_AUTO policy<{'amd64': 'y'}> +CONFIG_SPECTRE_BHI_OFF policy<{'amd64': 'n'}> +CONFIG_SPECTRE_BHI_ON policy<{'amd64': 'n'}> CONFIG_SPECULATION_MITIGATIONS policy<{'amd64': 'y'}> CONFIG_SPI policy<{'amd64': 'y', 'arm64': 'y', 'armhf': 'y', 'ppc64el': 'y', 'riscv64': 'y', 's390x': 'n'}> CONFIG_SPI_ALTERA policy<{'amd64': 'm', 'arm64': 'm', 'armhf': 'm', 'ppc64el': 'm', 'riscv64': 'm', 's390x': '-'}>