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AJvYcCXpkGb6Jfzhy8v5CuDvT4qETtESEVa68NfT4AnluwCAaaPFpY+uXvLPnIxuQ2EENng+di7r9wSbA98b27GsZk3o+uo= X-Gm-Message-State: AOJu0YyNNJ44pW2pC/Caf1+6+rJMPI1IUT/sTCcZJQ1Pz+S1OY6OYpDV M4sWH46hT42xpmdEq354/85jGuG84E+IU/YStykqRzxcUC08RPNm5hhlP9c37V5+0VPt8L/Mh+J wnRaF1Bxq6J2gSVJGCWSyGHdhYApLvIEBQGhw65OdLFkEC0mkIl06 X-Google-Smtp-Source: AGHT+IE9/j59ePHsIE7wROexb2r7j2+PVDNkibAeLARQjWi3O8iWwuHamyAydSfc2QE7vUP1IXfFrbc67BULZGXTcBI= X-Received: by 2002:a17:906:3185:b0:a6f:1590:ab06 with SMTP id a640c23a62f3a-a7514430d69mr573632566b.31.1719946540767; Tue, 02 Jul 2024 11:55:40 -0700 (PDT) MIME-Version: 1.0 References: <20240702132139.3332013-1-yosryahmed@google.com> <20240702103628.61879ef17b9b01305515c634@linux-foundation.org> <20240702113554.2471f000055f3c717fced4f5@linux-foundation.org> <9c8a139e-9e20-4f39-b750-fa390a8a745a@intel.com> In-Reply-To: <9c8a139e-9e20-4f39-b750-fa390a8a745a@intel.com> From: Yosry Ahmed Date: Tue, 2 Jul 2024 11:55:02 -0700 Message-ID: Subject: Re: [RESEND PATCH v3 0/3] x86/mm: LAM fixups and cleanups To: Dave Hansen Cc: Andrew Morton , x86@kernel.org, Thomas Gleixner , Ingo Molnar , Borislav Petkov , Dave Hansen , "H. Peter Anvin" , Andy Lutomirski , Peter Zijlstra , "Kirill A. Shutemov" , Rick Edgecombe , linux-mm@kvack.org, linux-kernel@vger.kernel.org Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-Rspamd-Queue-Id: E36C41C000D X-Rspam-User: X-Rspamd-Server: rspam05 X-Stat-Signature: 9nsbcptgp63q6tg9t5eqxazzweqob5i9 X-HE-Tag: 1719946542-98129 X-HE-Meta: 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 sIDQVqoj OID+f7Z7WONZV7VtUNODwkS7Mz06v5Ds52HlxCz2o48TNAsPTNQMwFtWYPGf1XfIzDdFrYOqDoCQEPPqLbi4OKlqIx1/Al8kp2eE9JceDZSaWrquiaegjQchEmlAZamYOg4jrC0GA0TTuVjIIEmdrb3VYNqLNQe7CRx7tRT4DCEgWQCA+5sGT7qiMQvfQE/SwObLA 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: List-Subscribe: List-Unsubscribe: On Tue, Jul 2, 2024 at 11:38=E2=80=AFAM Dave Hansen = wrote: > > On 7/2/24 11:35, Andrew Morton wrote: > > But when people run older (or current) kernels on newer hardware, they > > will hit this. So a backport to cover 82721d8b25d7 ("x86/mm: Handle > > LAM on context switch") is needed. > > > > The series doesn't seem to be getting much traction so I can add it to > > mm.git's mm-unstable branch for wider testing, but it's clearly an x86 > > tree thing. > > I was really hoping Andy L would look at this since he suggested this > whole thing really. > > I completely agree that this needs some wider testing. How about I pull > it into x86/mm so it gets some linux-next testing instead of having it > in mm-unstable? Maybe it'll also attract Andy's attention once it's in > there. That would be great. Thanks Dave!