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Fri, 10 Jun 2022 16:35:34 -0700 (PDT) Date: Fri, 10 Jun 2022 16:35:01 -0700 In-Reply-To: <20220610233513.1798771-1-samitolvanen@google.com> Message-Id: <20220610233513.1798771-9-samitolvanen@google.com> Mime-Version: 1.0 References: <20220610233513.1798771-1-samitolvanen@google.com> X-Developer-Key: i=samitolvanen@google.com; a=openpgp; fpr=35CCFB63B283D6D3AEB783944CB5F6848BBC56EE X-Developer-Signature: v=1; a=openpgp-sha256; l=3850; h=from:subject; bh=5ZgbGJz2ZEVaG6LF/2peYBgvNX5g5T9rQB8ZfRmBxaI=; b=owEB7QES/pANAwAKAUy19oSLvFbuAcsmYgBio9Ut3swgrYqngHqwtC1wp3RKCDV4QKgDfNVLYTiJ 6dF63+OJAbMEAAEKAB0WIQQ1zPtjsoPW0663g5RMtfaEi7xW7gUCYqPVLQAKCRBMtfaEi7xW7qYDC/ 4uoZDVEdEW9ia3dPSZOELy1obJP3wjydRD7Jb2lRl1j9YRC2vDbdRegiY/dAhKBUZJIhMFxhi7Ucda KBRlntq1sn5muM0HQLQW+2VQgGVUy6eswi1cnBJhF5weOCA5Yq8JqmkzpXMwmDQ15lHhdhWygirOmo YoyTdzn+9slce2r9w2kr8H7tKHOPpmByY8iM3OzE+cVOW9MTkuNi95Nzrccd8sFj2MDWuqGOfStQVv Rucb8+Vw6DbdPiJsNzUi4iTPWKMGooEKDKoO40U7zAARl068qUIzJNawJ2xy4ljp+UtBszmuNETnQD T0ouk5BQa4iYf7b1d4cbdz19cbiD6tkWIB8qleILbqaLLwWo/Qy2osauXT85QiQLludzGxtOVgotdy WF/4UkWdBS756ZuBpa1lLxpYbC2IVBSAtVs0C8isRpIIUnIl6TuTi4N4f0HRZbiuuluaWnw9wFxsqA iUejEfd5Gi6gRpLlSxdqzBG0a1c1VsXlwbq5mZ1fkSado= X-Mailer: git-send-email 2.36.1.476.g0c4daa206d-goog Subject: [RFC PATCH v3 08/20] arm64: Add types to indirect called assembly functions From: Sami Tolvanen To: linux-kernel@vger.kernel.org Cc: Kees Cook , Josh Poimboeuf , Peter Zijlstra , x86@kernel.org, Catalin Marinas , Will Deacon , Mark Rutland , Nathan Chancellor , Nick Desaulniers , Joao Moreira , Sedat Dilek , Steven Rostedt , linux-hardening@vger.kernel.org, linux-arm-kernel@lists.infradead.org, llvm@lists.linux.dev, Sami Tolvanen Content-Type: text/plain; charset="UTF-8" X-Spam-Status: No, score=-9.6 required=5.0 tests=BAYES_00,DKIMWL_WL_MED, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,RCVD_IN_DNSWL_NONE, SPF_HELO_NONE,SPF_PASS,T_SCC_BODY_TEXT_LINE,USER_IN_DEF_DKIM_WL autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org With CONFIG_CFI_CLANG, assembly functions indirectly called from C code must be annotated with type identifiers to pass CFI checking. Use SYM_TYPED_FUNC_START for the indirectly called functions. Signed-off-by: Sami Tolvanen Reviewed-by: Kees Cook --- arch/arm64/crypto/ghash-ce-core.S | 5 +++-- arch/arm64/crypto/sm3-ce-core.S | 3 ++- arch/arm64/kernel/cpu-reset.S | 5 +++-- arch/arm64/mm/proc.S | 5 +++-- 4 files changed, 11 insertions(+), 7 deletions(-) diff --git a/arch/arm64/crypto/ghash-ce-core.S b/arch/arm64/crypto/ghash-ce-core.S index 7868330dd54e..ebe5558929b7 100644 --- a/arch/arm64/crypto/ghash-ce-core.S +++ b/arch/arm64/crypto/ghash-ce-core.S @@ -6,6 +6,7 @@ */ #include +#include #include SHASH .req v0 @@ -350,11 +351,11 @@ CPU_LE( rev64 T1.16b, T1.16b ) * void pmull_ghash_update(int blocks, u64 dg[], const char *src, * struct ghash_key const *k, const char *head) */ -SYM_FUNC_START(pmull_ghash_update_p64) +SYM_TYPED_FUNC_START(pmull_ghash_update_p64) __pmull_ghash p64 SYM_FUNC_END(pmull_ghash_update_p64) -SYM_FUNC_START(pmull_ghash_update_p8) +SYM_TYPED_FUNC_START(pmull_ghash_update_p8) __pmull_ghash p8 SYM_FUNC_END(pmull_ghash_update_p8) diff --git a/arch/arm64/crypto/sm3-ce-core.S b/arch/arm64/crypto/sm3-ce-core.S index ef97d3187cb7..ca70cfacd0d0 100644 --- a/arch/arm64/crypto/sm3-ce-core.S +++ b/arch/arm64/crypto/sm3-ce-core.S @@ -6,6 +6,7 @@ */ #include +#include #include .irp b, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12 @@ -73,7 +74,7 @@ * int blocks) */ .text -SYM_FUNC_START(sm3_ce_transform) +SYM_TYPED_FUNC_START(sm3_ce_transform) /* load state */ ld1 {v8.4s-v9.4s}, [x0] rev64 v8.4s, v8.4s diff --git a/arch/arm64/kernel/cpu-reset.S b/arch/arm64/kernel/cpu-reset.S index 48a8af97faa9..6b752fe89745 100644 --- a/arch/arm64/kernel/cpu-reset.S +++ b/arch/arm64/kernel/cpu-reset.S @@ -8,6 +8,7 @@ */ #include +#include #include #include #include @@ -28,7 +29,7 @@ * branch to what would be the reset vector. It must be executed with the * flat identity mapping. */ -SYM_CODE_START(cpu_soft_restart) +SYM_TYPED_FUNC_START(cpu_soft_restart) mov_q x12, INIT_SCTLR_EL1_MMU_OFF pre_disable_mmu_workaround /* @@ -47,6 +48,6 @@ SYM_CODE_START(cpu_soft_restart) mov x1, x3 // arg1 mov x2, x4 // arg2 br x8 -SYM_CODE_END(cpu_soft_restart) +SYM_FUNC_END(cpu_soft_restart) .popsection diff --git a/arch/arm64/mm/proc.S b/arch/arm64/mm/proc.S index 50bbed947bec..dfa715315551 100644 --- a/arch/arm64/mm/proc.S +++ b/arch/arm64/mm/proc.S @@ -10,6 +10,7 @@ #include #include #include +#include #include #include #include @@ -184,7 +185,7 @@ SYM_FUNC_END(cpu_do_resume) * This is the low-level counterpart to cpu_replace_ttbr1, and should not be * called by anything else. It can only be executed from a TTBR0 mapping. */ -SYM_FUNC_START(idmap_cpu_replace_ttbr1) +SYM_TYPED_FUNC_START(idmap_cpu_replace_ttbr1) save_and_disable_daif flags=x2 __idmap_cpu_set_reserved_ttbr1 x1, x3 @@ -224,7 +225,7 @@ SYM_FUNC_END(idmap_cpu_replace_ttbr1) */ __idmap_kpti_flag: .long 1 -SYM_FUNC_START(idmap_kpti_install_ng_mappings) +SYM_TYPED_FUNC_START(idmap_kpti_install_ng_mappings) cpu .req w0 num_cpus .req w1 swapper_pa .req x2 -- 2.36.1.476.g0c4daa206d-goog