From: Thomas Gleixner <tglx@linutronix.de>
To: Peter Schneider <pschneider1968@googlemail.com>
Cc: LKML <linux-kernel@vger.kernel.org>,
x86@kernel.org, stable@vger.kernel.org,
regressions@lists.linux.dev
Subject: Re: Kernel 6.9 regression: X86: Bogus messages from topology detection
Date: Thu, 30 May 2024 17:53:57 +0200 [thread overview]
Message-ID: <87o78n8fe2.ffs@tglx> (raw)
In-Reply-To: <87r0dj8ls4.ffs@tglx>
On Thu, May 30 2024 at 15:35, Thomas Gleixner wrote:
> On Thu, May 30 2024 at 12:06, Peter Schneider wrote:
> Now the million-dollar question is what unlocks CPUID to read the proper
> value of EAX of leaf 0. All I could come up with is to sprinkle a dozen
> of printks into that code. Updated debug patch below.
Don't bother. Dave pointed out to me that this is unlocked in
early_init_intel() via MSR_IA32_MISC_ENABLE_LIMIT_CPUID...
Let me figure out how to fix that sanely.
Thanks,
tglx
next prev parent reply other threads:[~2024-05-30 15:54 UTC|newest]
Thread overview: 29+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-05-27 7:29 Kernel 6.9 regression: X86: Bogus messages from topology detection Peter Schneider
2024-05-27 13:14 ` Thomas Gleixner
2024-05-27 20:49 ` Thomas Gleixner
2024-05-27 21:06 ` Peter Schneider
2024-05-27 21:15 ` Peter Schneider
2024-05-27 21:34 ` Christian Heusel
2024-05-30 8:30 ` Thomas Gleixner
2024-05-30 10:06 ` Peter Schneider
2024-05-30 13:35 ` Thomas Gleixner
2024-05-30 15:53 ` Thomas Gleixner [this message]
2024-05-30 16:24 ` Thomas Gleixner
2024-05-31 6:52 ` Peter Schneider
2024-05-31 8:33 ` Thomas Gleixner
2024-05-31 8:42 ` Thomas Gleixner
2024-05-31 9:41 ` Peter Schneider
2024-05-31 10:07 ` Thomas Gleixner
2024-05-31 10:22 ` Peter Schneider
2024-06-01 7:06 ` Linux regression tracking (Thorsten Leemhuis)
2024-06-01 7:20 ` Thomas Gleixner
2024-06-01 7:25 ` Linux regression tracking (Thorsten Leemhuis)
2024-05-31 8:13 ` Christian Heusel
2024-05-31 8:16 ` Christian Heusel
2024-05-31 8:48 ` Thomas Gleixner
2024-05-31 9:11 ` Thomas Gleixner
2024-05-31 13:08 ` Christian Heusel
2024-05-31 13:42 ` Thomas Gleixner
2024-05-31 14:29 ` Christian Heusel
2024-05-31 15:25 ` Thomas Gleixner
2024-05-31 11:06 ` Thomas Gleixner
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