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Tue, 21 Jan 2020 14:06:26 -0800 (PST) MIME-Version: 1.0 References: <20191211184027.20130-1-catalin.marinas@arm.com> <20191211184027.20130-16-catalin.marinas@arm.com> In-Reply-To: <20191211184027.20130-16-catalin.marinas@arm.com> From: Peter Collingbourne Date: Tue, 21 Jan 2020 14:06:14 -0800 Message-ID: Subject: Re: [PATCH 15/22] arm64: mte: Add PROT_MTE support to mmap() and mprotect() To: Catalin Marinas Cc: Linux ARM , linux-arch@vger.kernel.org, Richard Earnshaw , Szabolcs Nagy , Marc Zyngier , Kevin Brodsky , linux-mm@kvack.org, Andrey Konovalov , Vincenzo Frascino , Will Deacon Content-Type: text/plain; charset="UTF-8" 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: On Wed, Dec 11, 2019 at 10:44 AM Catalin Marinas wrote: > diff --git a/fs/proc/task_mmu.c b/fs/proc/task_mmu.c > index 9442631fd4af..34bc9e0b4896 100644 > --- a/fs/proc/task_mmu.c > +++ b/fs/proc/task_mmu.c > @@ -677,6 +677,9 @@ static void show_smap_vma_flags(struct seq_file *m, struct vm_area_struct *vma) > [ilog2(VM_MERGEABLE)] = "mg", > [ilog2(VM_UFFD_MISSING)]= "um", > [ilog2(VM_UFFD_WP)] = "uw", > +#ifdef CONFIG_ARM64_MTE > + [ilog2(VM_MTE)] = "mt", We should probably add an entry for VM_MTE_ALLOWED here as well. Peter