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([2600:4040:5c6c:a300:ded4:e2aa:1dec:4d9]) by smtp.gmail.com with ESMTPSA id 6a1803df08f44-6a15f1d92c2sm801816d6.128.2024.05.08.16.21.25 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 08 May 2024 16:21:25 -0700 (PDT) Message-ID: Subject: Re: Early boot regression from f0551af0213 ("x86/topology: Ignore non-present APIC IDs in a present package") From: Lyude Paul To: Thomas Gleixner , "Linux regression tracking (Thorsten Leemhuis)" Cc: x86@kernel.org, linux-kernel@vger.kernel.org, Mario Limonciello , Borislav Petkov , Linux kernel regressions list Date: Wed, 08 May 2024 19:21:06 -0400 In-Reply-To: References: <3d77cb89857ee43a9c31249f4eab7196013bc4b4.camel@redhat.com> <20240418082703.GCZiDZVyra7qOQbyqn@fat_crate.local> <87plumxz4x.ffs@tglx> <87le59vw1y.ffs@tglx> <3a0afe545747e5314a9cb6bbaa9ce90b259ddfac.camel@redhat.com> <87edautcmz.ffs@tglx> <3b1d16e357c1f9badeef405366492f05af26c085.camel@redhat.com> <878r11t8zu.ffs@tglx> <016902d9-3858-4c65-b3ec-f7a5103af63c@amd.com> <51d0dff8-2888-463c-95ab-71b491f12a8f@leemhuis.info> <877cg4ppd5.ffs@tglx> Organization: Red Hat Inc. Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable User-Agent: Evolution 3.52.1 (3.52.1-1.fc40) Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Ok - so re the serial port comment (which I missed the first time I read your message, oops!): I can totally get a serial console on this machine, I happen to already have a serial port hooked up to the motherboard. I'm not sure where my USB to RS232 adapter to connect to it on my laptop is though, so I put in an order for a new one and it should arrive tomorrow. Regarding the test results - I tried possible_cpus all the way up to 17 and nothing got the machine to boot. However, possible_cpus=3D8 intremap=3Doff did get the machine to boot successfully On Wed, 2024-05-08 at 17:02 -0400, Lyude Paul wrote: > Yes sorry - I was out of work for a bit but I'm back now and can get > you the info today - thanks for the patience =E2=99=A5 >=20 > On Wed, 2024-05-08 at 12:30 +0200, Thomas Gleixner wrote: > > On Wed, May 08 2024 at 10:38, Linux regression tracking (Thorsten > > Leemhuis) wrote: > > > H! Lyude, Thomas, what's the status here? From here it looks like > > > we > > > were close to a fix, but then it turned out to be a bad fix -- > > > and > > > afterwards nothing much seems to have happened. Did it fall > > > through > > > the > > > cracks, or was this already fixed and I just missed that? > >=20 > > I'm waiting for more data still. > >=20 > > Thanks, > >=20 > > =C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 tglx > >=20 >=20 --=20 Cheers, Lyude Paul (she/her) Software Engineer at Red Hat