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[70.24.86.62]) by smtp.gmail.com with ESMTPSA id c30-20020a0ca9de000000b0061f7cf8207asm818958qvb.133.2023.05.18.14.50.57 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 18 May 2023 14:50:58 -0700 (PDT) Date: Thu, 18 May 2023 17:50:56 -0400 From: Peter Xu To: Axel Rasmussen Cc: Jiaqi Yan , James Houghton , Alexander Viro , Andrew Morton , Christian Brauner , David Hildenbrand , Hongchen Zhang , Huang Ying , "Liam R. Howlett" , Miaohe Lin , "Mike Rapoport (IBM)" , Nadav Amit , Naoya Horiguchi , Shuah Khan , ZhangPeng , linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org, linux-kselftest@vger.kernel.org, Anish Moorthy Subject: Re: [PATCH 1/3] mm: userfaultfd: add new UFFDIO_SIGBUS ioctl Message-ID: References: <20230511182426.1898675-1-axelrasmussen@google.com> MIME-Version: 1.0 In-Reply-To: X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Type: text/plain; charset=utf-8 Content-Disposition: inline X-Stat-Signature: p7yjk5rb8fseu1zu8hk9ed93apmkq66k X-Rspamd-Server: rspam10 X-Rspamd-Queue-Id: 50B0C40007 X-Rspam-User: X-HE-Tag: 1684446662-913427 X-HE-Meta: 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 zmqIO38t 4aarKwLc6ddrYWtmX1jiMokpAP9T6Sx0Iq9+QJ15fcuqwGo7xDPSNlkDMsofwluV6N3N5/Bf5wGgVQSjzrn2rzBdveAcWSdL3WeWe00pLV4H/fJUmnA0kucRM/Yw0Oy56ayf6ETNQB87VfJU+UICzDRbI85Qa+7bKyfLCzL7PxQmtM+UXY9VO24m40WXU3BfSMgslb/ljhYnarsRM8O/WDZvtGhM/56C/yrhzXUZlIG3dsptAOyU9OmQfvwwplr2a4j6IFvg9WS92chwCrFnyFDumOwfxN01lw41JrF55Dpdqm4AkT2371gM44MaiOEmPWFR0gLWtpqoVEcJnqKuiHawviVzWu8VU8yZ7kHfkHLIH7L55BfU5pbXauXBoWyQktPKiF9jx2YZpTZ9wVh4vzJoTrYRssBj2P6bn2chVisx0bkOOlg7LVdQQww== 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 Thu, May 18, 2023 at 05:38:14PM -0400, Peter Xu wrote: > If with uffd, perhaps avoid calling it sigbus? As we have FEATURE_SIGBUS > and I'm afraid it'll cause confusion. UFFDIO_HWPOISON may sound more > suitable? Or UFFDIO_POISON (to identify it from real hw poisons).. -- Peter Xu