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Message-ID: <17b83f59efbc568c1fe3154f82a5300f3b4cfe24.camel@surriel.com>
Subject: Re: [PATCH v2]  x86,mm: print likely CPU at segfault time
From:   Rik van Riel <riel@surriel.com>
To:     Ingo Molnar <mingo@kernel.org>
Cc:     Dave Hansen <dave.hansen@intel.com>, x86@kernel.org,
        linux-kernel@vger.kernel.org, kernel-team@fb.com,
        Thomas Gleixner <tglx@linutronix.de>, Dave Jones <dsj@fb.com>,
        Andy Lutomirski <luto@kernel.org>
Date:   Thu, 04 Aug 2022 23:01:56 -0400
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References: <20220804155450.08c5b87e@imladris.surriel.com>
         <YuwpQEYCwTl+m6j5@gmail.com>
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On Thu, 2022-08-04 at 22:17 +0200, Ingo Molnar wrote:
>=20
> I've added the tidbit to the changelog that this only gets printed if
> show_unhandled_signals (/proc/sys/kernel/print-fatal-signals) is

The show_unhandled_signals variable seems to be controlled
through /proc/sys/debug/exception-trace, and be on by default.

Enabling print-fatal-signals makes the kernel a lot more
chatty, and does not offer the same value in my experiments :)

> enabled -=20
> which is off by default. So your patch expands upon a default-off
> debug=20
> printout in essence - where utility maximization is OK.
>=20
> Thanks,
>=20
> =C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0Ingo
>=20

--=20
All Rights Reversed.

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