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Shutemov" , Borislav Petkov , Andrew Morton Cc: Vlastimil Babka , Mike Rapoport , Lorenzo Stoakes , Tom Lendacky , Baoquan He , Vivek Goyal , Dave Young , linux-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-mm@kvack.org, linux-coco@lists.linux.dev, linux-efi@vger.kernel.org, kexec@lists.infradead.org References: <20230906073902.4229-1-adrian.hunter@intel.com> <20230906073902.4229-3-adrian.hunter@intel.com> From: Dave Hansen In-Reply-To: <20230906073902.4229-3-adrian.hunter@intel.com> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-Rspamd-Queue-Id: D60EE1C0033 X-Rspam-User: X-Stat-Signature: 51ysss1cr69oextk8konq53wrdf3tjxj X-Rspamd-Server: rspam03 X-HE-Tag: 1694101393-842749 X-HE-Meta: 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 VIu2TV7j 68RpvReQQkVZEKayJSKxSajmEY3W2++uskHPZLGS0BLManf3n3xsmcCUkBFr0ycGv31BXiBFWUFfVYLdDKKJ8uqjindIzyxTiRDCt/DGNtGQ9Mi/Lli2vMVoemX+1Ei0EYbG1Jyx+Zb4m7Jc= 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 9/6/23 00:39, Adrian Hunter wrote: > Do not map unaccepted memory because it can cause the guest to fail. > > For /proc/kcore, which is read-only and does not support mmap, this means a > read of unaccepted memory will return zeros. I'm confused by this changelog and subject. What is getting "mapped" here if mmap() isn't in play?