From: Sohil Mehta <sohil.mehta@intel.com>
To: Borislav Petkov <bp@alien8.de>
Cc: "H. Peter Anvin" <hpa@zytor.com>,
Maciej Wieczor-Retman <m.wieczorretman@pm.me>,
Dave Hansen <dave.hansen@linux.intel.com>,
"Thomas Gleixner" <tglx@kernel.org>,
Ingo Molnar <mingo@redhat.com>, <x86@kernel.org>,
<pawel.chmielewski@linux.intel.com>,
Farrah Chen <farrah.chen@intel.com>,
Maciej Wieczor-Retman <maciej.wieczor-retman@intel.com>,
<stable@vger.kernel.org>, <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH v5 1/3] x86/cpu: Clear feature bits disabled at compile-time
Date: Thu, 12 Feb 2026 16:36:04 -0800 [thread overview]
Message-ID: <fa74dfe4-ddcf-49e8-b621-f5d3b8761da7@intel.com> (raw)
In-Reply-To: <57039edb-419c-4e4a-96d0-3578e233b594@intel.com>
On 2/12/2026 4:14 PM, Sohil Mehta wrote:
> On 2/12/2026 3:47 PM, Borislav Petkov wrote:
>> On Thu, Feb 12, 2026 at 03:04:44PM -0800, Sohil Mehta wrote:
>>> Can we just deprecate the "Flags" bits of /proc/cpuinfo at this point?
>>>
>>> No production software can be using this meaningfully.
>>
>> Before you do, grep glibc sources.
>>
>
> I meant freeze at whatever we have today but stop adding to it. As
> described below, it has been buggy for *some* features for a long time.
>
On further thought, I realized that it would be impractical to implement
such a freeze. And maintaining the two separate interfaces could become
a lot of burden.
next prev parent reply other threads:[~2026-02-13 0:36 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-02-12 15:33 [PATCH v5 0/3] x86: Capability bits fix and required bits sanity check Maciej Wieczor-Retman
2026-02-12 15:34 ` [PATCH v5 1/3] x86/cpu: Clear feature bits disabled at compile-time Maciej Wieczor-Retman
2026-02-12 15:58 ` Borislav Petkov
2026-02-12 16:23 ` Maciej Wieczor-Retman
2026-02-12 21:34 ` H. Peter Anvin
2026-02-12 21:51 ` Borislav Petkov
2026-02-12 23:04 ` Sohil Mehta
2026-02-12 23:47 ` Borislav Petkov
2026-02-13 0:14 ` Sohil Mehta
2026-02-13 0:36 ` Sohil Mehta [this message]
2026-02-13 0:58 ` Borislav Petkov
2026-02-13 20:11 ` H. Peter Anvin
2026-02-12 15:35 ` [PATCH v5 2/3] x86/cpu: Check if feature string is non-zero Maciej Wieczor-Retman
2026-02-13 0:28 ` Sohil Mehta
2026-02-13 10:02 ` Maciej Wieczor-Retman
2026-02-13 18:22 ` Sohil Mehta
2026-02-13 19:10 ` Maciej Wieczor-Retman
2026-02-13 20:00 ` Sohil Mehta
2026-02-13 20:26 ` Maciej Wieczor-Retman
2026-02-13 20:15 ` H. Peter Anvin
2026-02-13 20:24 ` Maciej Wieczor-Retman
2026-02-12 15:35 ` [PATCH v5 3/3] x86/cpu: Required feature bits sanity check Maciej Wieczor-Retman
2026-02-13 20:17 ` H. Peter Anvin
2026-02-13 20:23 ` [PATCH v5 0/3] x86: Capability bits fix and required " H. Peter Anvin
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