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[2a00:1028:83b8:1e7a:3010:3bd6:8521:caf1]) by smtp.gmail.com with UTF8SMTPSA id 5b1f17b1804b1-475c41cc92csm37137625e9.0.2025.10.22.03.26.18 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 22 Oct 2025 03:26:18 -0700 (PDT) From: Petr Tesarik To: Pawan Gupta , Thomas Gleixner , Ingo Molnar , Borislav Petkov Cc: "H. Peter Anvin" , Dave Hansen , Nikolay Borisov , x86@kernel.org (maintainer:X86 ARCHITECTURE (32-BIT AND 64-BIT)), linux-kernel@vger.kernel.org (open list:X86 ARCHITECTURE (32-BIT AND 64-BIT)), Petr Tesarik Subject: [PATCH v3 0/2] x86/tsx: Improve handling of the tsx= kernel parameter Date: Wed, 22 Oct 2025 12:26:11 +0200 Message-ID: X-Mailer: git-send-email 2.51.0 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Parse the tsx= kernel parameter with early_param(), so it is not reported as unknown. As a side note, it was not necessary to defer the handling of tsx=auto. Contrary to Pawan's claim, cpu_set_bug_bits() is called from setup_arch() via early_cpu_init() and early_identify_cpu() before parse_early_param(). But it is a nice cleanup, nevertheless, and I learned something about parsing the command line. Cf. the NAK here: https://lore.kernel.org/all/20251009185134.fb4evjrk76rwxv37@desk/ Changes from v2: * compile-time initialization with the configured default * defer tsx=auto handling to tsx_init() * add more detail to the commit message Changes from v1: * make tsx_ctrl_state local to tsx.c * use early_param() instead of core_param() Petr Tesarik (2): x86/tsx: Make tsx_ctrl_state static x86/tsx: Get the tsx= command line parameter with early_param() arch/x86/kernel/cpu/cpu.h | 9 ------ arch/x86/kernel/cpu/tsx.c | 59 ++++++++++++++++++++++----------------- 2 files changed, 34 insertions(+), 34 deletions(-) -- 2.51.0