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Tue, 29 Apr 2025 17:16:28 -0700 (PDT) From: Deepak Gupta Date: Tue, 29 Apr 2025 17:16:18 -0700 Subject: [PATCH v14 01/27] mm: VM_SHADOW_STACK definition for riscv MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Message-Id: <20250429-v5_user_cfi_series-v14-1-5239410d012a@rivosinc.com> References: <20250429-v5_user_cfi_series-v14-0-5239410d012a@rivosinc.com> In-Reply-To: <20250429-v5_user_cfi_series-v14-0-5239410d012a@rivosinc.com> To: Thomas Gleixner , Ingo Molnar , Borislav Petkov , Dave Hansen , x86@kernel.org, "H. Peter Anvin" , Andrew Morton , "Liam R. Howlett" , Vlastimil Babka , Lorenzo Stoakes , Paul Walmsley , Palmer Dabbelt , Albert Ou , Conor Dooley , Rob Herring , Krzysztof Kozlowski , Arnd Bergmann , Christian Brauner , Peter Zijlstra , Oleg Nesterov , Eric Biederman , Kees Cook , Jonathan Corbet , Shuah Khan , Jann Horn , Conor Dooley , Miguel Ojeda , Alex Gaynor , Boqun Feng , Gary Guo , =?utf-8?q?Bj=C3=B6rn_Roy_Baron?= , Benno Lossin , Andreas Hindborg , Alice Ryhl , Trevor Gross Cc: linux-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-mm@kvack.org, linux-riscv@lists.infradead.org, devicetree@vger.kernel.org, linux-arch@vger.kernel.org, linux-doc@vger.kernel.org, linux-kselftest@vger.kernel.org, alistair.francis@wdc.com, richard.henderson@linaro.org, jim.shu@sifive.com, andybnac@gmail.com, kito.cheng@sifive.com, charlie@rivosinc.com, atishp@rivosinc.com, evan@rivosinc.com, cleger@rivosinc.com, alexghiti@rivosinc.com, samitolvanen@google.com, broonie@kernel.org, rick.p.edgecombe@intel.com, rust-for-linux@vger.kernel.org, Zong Li , Deepak Gupta X-Mailer: b4 0.13.0 X-Rspamd-Server: rspam11 X-Rspamd-Queue-Id: 36A2140009 X-Stat-Signature: rd6zakyjp5wt16r9qtfjz1f665y59hic X-Rspam-User: X-HE-Tag: 1745972189-140391 X-HE-Meta: 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 KWwHZX61 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 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: VM_HIGH_ARCH_5 is used for riscv Reviewed-by: Zong Li Reviewed-by: Alexandre Ghiti Signed-off-by: Deepak Gupta --- include/linux/mm.h | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/include/linux/mm.h b/include/linux/mm.h index b7f13f087954..3487f28fa0bf 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -352,6 +352,13 @@ extern unsigned int kobjsize(const void *objp); # define VM_SHADOW_STACK VM_HIGH_ARCH_6 #endif +#if defined(CONFIG_RISCV_USER_CFI) +/* + * Following x86 and picking up the same bitpos. + */ +# define VM_SHADOW_STACK VM_HIGH_ARCH_5 +#endif + #ifndef VM_SHADOW_STACK # define VM_SHADOW_STACK VM_NONE #endif -- 2.43.0