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Message-ID: <d2c6f335a6eb5892b0d894d5df4a6e713fa013b5.camel@redhat.com>
Subject: Re: Early boot regression from f0551af0213 ("x86/topology: Ignore
 non-present APIC IDs in a present package")
From: Lyude Paul <lyude@redhat.com>
To: Thomas Gleixner <tglx@linutronix.de>, "Linux regression tracking
 (Thorsten Leemhuis)" <regressions@leemhuis.info>
Cc: x86@kernel.org, linux-kernel@vger.kernel.org, Mario Limonciello
	 <mario.limonciello@amd.com>, Borislav Petkov <bp@alien8.de>, Linux kernel
 regressions list <regressions@lists.linux.dev>
Date: Wed, 08 May 2024 19:21:06 -0400
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Organization: Red Hat Inc.
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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