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[180.214.232.17]) by smtp.gmail.com with ESMTPSA id y18-20020aa78052000000b005a8bf239f5csm2339589pfm.193.2023.03.14.20.59.57 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 14 Mar 2023 20:59:57 -0700 (PDT) Received: by debian.me (Postfix, from userid 1000) id 2BE6A106195; Wed, 15 Mar 2023 10:59:53 +0700 (WIB) Date: Wed, 15 Mar 2023 10:59:53 +0700 From: Bagas Sanjaya To: Stefan Roesch , kernel-team@fb.com Cc: linux-mm@kvack.org, riel@surriel.com, mhocko@suse.com, david@redhat.com, linux-doc@vger.kernel.org, akpm@linux-foundation.org, hannes@cmpxchg.org Subject: Re: [PATCH v1] docs/mm: extend ksm doc Message-ID: References: <20230314204557.3863923-1-shr@devkernel.io> MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha512; protocol="application/pgp-signature"; boundary="wIjEjcYmUcp0YvzG" Content-Disposition: inline In-Reply-To: <20230314204557.3863923-1-shr@devkernel.io> X-Rspamd-Queue-Id: DF046140013 X-Stat-Signature: mhm6wrgic4obrnuzme63bsmjcojtr4wu X-Rspam-User: X-Rspamd-Server: rspam08 X-HE-Tag: 1678852799-387998 X-HE-Meta: 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 v7HSKdO1 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 X-Bogosity: Ham, tests=bogofilter, spamicity=0.246847, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: --wIjEjcYmUcp0YvzG Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Tue, Mar 14, 2023 at 01:45:57PM -0700, Stefan Roesch wrote: > +to cancel that advice and restore unshared pages: whereupon KSM > +unmerges whatever is merged for that process. Note: this unmerging call > +may suddenly require more memory than is available - possibly failing > +with EAGAIN, but more probably arousing the Out-Of-Memory killer. "... to disable KSM and let it unmerges ... . Note that this unmerging call may exhaust memory and triggers OOM killer." > +However, if the system is dedicated to running multiple jobs within the > +same security domain, there is a usecase where multiple instances of the > +same job are running inside a safe shared security domain and using the > +same sensitive data. "... it is possible for multiple instances ... and share the same sensitive data." Thanks.=20 --=20 An old man doll... just what I always wanted! - Clara --wIjEjcYmUcp0YvzG Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iHUEABYKAB0WIQSSYQ6Cy7oyFNCHrUH2uYlJVVFOowUCZBFCtQAKCRD2uYlJVVFO ozI4AP9P9tfkdCTSJfH9gecQ8XguWY64xBRZzCAO9aruksa3dwEAml1J1hNvucA/ L7hhjcsKXkv6rW/TFH3/CVkLzxIFnw4= =FJct -----END PGP SIGNATURE----- --wIjEjcYmUcp0YvzG--