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Peter Anvin" , Andrew Morton , "Liam R. Howlett" , Vlastimil Babka , Lorenzo Stoakes , Arnd Bergmann , linux-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-mm@kvack.org, linux-arch@vger.kernel.org, Rick Edgecombe Subject: Re: [PATCH RFC/RFT v2 1/2] mm: helper `is_shadow_stack_vma` to check shadow stack vma Message-ID: References: <20241016-shstk_converge-v2-0-c41536eb5c3b@rivosinc.com> <20241016-shstk_converge-v2-1-c41536eb5c3b@rivosinc.com> <2b24849e-3595-414a-b11e-eb03cd3c3b28@sirena.org.uk> Precedence: bulk X-Mailing-List: linux-arch@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii; format=flowed Content-Disposition: inline In-Reply-To: <2b24849e-3595-414a-b11e-eb03cd3c3b28@sirena.org.uk> On Thu, Oct 17, 2024 at 12:22:02PM +0100, Mark Brown wrote: >On Wed, Oct 16, 2024 at 02:57:33PM -0700, Deepak Gupta wrote: >> VM_SHADOW_STACK (alias to VM_HIGH_ARCH_5) is used to encode shadow stack >> VMA on three architectures (x86 shadow stack, arm GCS and RISC-V shadow >> stack). In case architecture doesn't implement shadow stack, it's VM_NONE >> Introducing a helper `is_shadow_stack_vma` to determine shadow stack vma >> or not. > >Reviewed-by: Mark Brown > >though > >> @@ -387,7 +392,6 @@ static inline bool is_data_mapping(vm_flags_t flags) >> return (flags & (VM_WRITE | VM_SHARED | VM_STACK)) == VM_WRITE; >> } >> >> - >> static inline void vma_iter_config(struct vma_iterator *vmi, >> unsigned long index, unsigned long last) >> { >> > >Unrelated (but reasonable) whitespace change. Yeah I'll put that in commit message indicating this clean up in next version.