From: "Chang S. Bae" <chang.seok.bae@intel.com>
To: Xiaoyao Li <xiaoyao.li@intel.com>, <linux-kernel@vger.kernel.org>
Cc: <kvm@vger.kernel.org>, <pbonzini@redhat.com>, <seanjc@google.com>,
"Zhao Liu" <zhao1.liu@intel.com>,
Binbin Wu <binbin.wu@linux.intel.com>
Subject: Re: [PATCH] KVM: x86: Remove AMX-TF32 enumeration
Date: Thu, 9 Jul 2026 10:18:41 -0700 [thread overview]
Message-ID: <958ecf5c-4bc5-405a-9de3-a6dde235f0b9@intel.com> (raw)
In-Reply-To: <b9410638-57bd-46c8-b455-d4b288f0a9b1@intel.com>
On 7/8/2026 7:12 PM, Xiaoyao Li wrote:
>
> BTW, I think the bit cannot be assigned for new other usage in the
> future and becomes reserved forever, right?
Reserving the bit forever looks contrary to the purpose of this patch.
Right now the bit is already taken. And shipping processors will report
that CPUID bit as zero. So this removal intentionally makes the software
into the "it was never defined before" state. Whether the bit will
eventually be repurposed is what I don't know. But that being said, I
think it should be also backported to @stable.
Thanks,
Chang
next prev parent reply other threads:[~2026-07-09 17:18 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-07-08 21:01 [PATCH] KVM: x86: Remove AMX-TF32 enumeration Chang S. Bae
2026-07-09 2:12 ` Xiaoyao Li
2026-07-09 17:18 ` Chang S. Bae [this message]
2026-07-09 11:00 ` Zhao Liu
2026-07-09 17:26 ` Chang S. Bae
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