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[209.85.160.170]) by smtp.gmail.com with ESMTPSA id bx6-20020a05622a090600b003a81029654csm7529461qtb.31.2023.01.11.04.08.06 for (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Wed, 11 Jan 2023 04:08:07 -0800 (PST) Received: by mail-qt1-f170.google.com with SMTP id bp44so13645398qtb.0 for ; Wed, 11 Jan 2023 04:08:06 -0800 (PST) X-Received: by 2002:a05:622a:2598:b0:3ae:db1:185f with SMTP id cj24-20020a05622a259800b003ae0db1185fmr412604qtb.436.1673438886653; Wed, 11 Jan 2023 04:08:06 -0800 (PST) MIME-Version: 1.0 References: <20230101162910.710293-1-Jason@zx2c4.com> <20230101162910.710293-3-Jason@zx2c4.com> <874jt0kndq.fsf@oldenburg.str.redhat.com> In-Reply-To: From: Linus Torvalds Date: Wed, 11 Jan 2023 06:07:50 -0600 X-Gmail-Original-Message-ID: Message-ID: Subject: Re: [PATCH v14 2/7] mm: add VM_DROPPABLE for designating always lazily freeable mappings To: Eric Biggers Cc: Florian Weimer , "Jason A. Donenfeld" , Andy Lutomirski , Ingo Molnar , linux-kernel@vger.kernel.org, patches@lists.linux.dev, tglx@linutronix.de, linux-crypto@vger.kernel.org, linux-api@vger.kernel.org, x86@kernel.org, Greg Kroah-Hartman , Adhemerval Zanella Netto , "Carlos O'Donell" , Arnd Bergmann , Jann Horn , Christian Brauner , linux-mm@kvack.org, mlichvar@redhat.com Content-Type: text/plain; charset="UTF-8" X-Rspamd-Server: rspam07 X-Rspamd-Queue-Id: 3C2FE10000D X-Rspam-User: X-Stat-Signature: dkgrbum5xdscnitb9enzu8igdnaab8ct X-HE-Tag: 1673438889-8528 X-HE-Meta: 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 e8Io1DGo h+vr0qbcllG28Asozy2nHzVJalT+gL6uGwZF+HwX8tq4bXWRBblHzlZ2NRbnlOwvUjpIcYBKAOXzOwH58t7vVSOrFV+ILltNU81gZ88VXYyECTdSp2jUQpdxJ0hfomeAziZWBC0VIESWDMSmKiPfNKXdWJVRoD3P8TP6QcU6bQH/dPQ08aj2wobCtzed5VAyQHSaKlIVFPTBJAek6cZ2zCBxNERYjeGZHgL+h197GV5WNpkP8/GMvu9IoACXeNepEf4XrplBYuU+OX1VysuAKYhPzvHZHzNmnm3B1yRpit6ACQJA3dFaOmAmCyFSV/42jz3RRcbJ/yBz13hWmFKBWRnoF+g== 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, Jan 11, 2023 at 1:27 AM Eric Biggers wrote: > > How would userspace decide when to reseed its CRNGs, then? .. and that is relevant to all the VM discussions exactly why? Linus