From: Chao Gao <chao.gao@intel.com>
To: "Chang S. Bae" <chang.seok.bae@intel.com>
Cc: <tglx@linutronix.de>, <dave.hansen@intel.com>, <x86@kernel.org>,
<seanjc@google.com>, <pbonzini@redhat.com>,
<linux-kernel@vger.kernel.org>, <kvm@vger.kernel.org>,
<peterz@infradead.org>, <rick.p.edgecombe@intel.com>,
<weijiang.yang@intel.com>, <john.allen@amd.com>, <bp@alien8.de>
Subject: Re: [PATCH v3 09/10] x86/fpu/xstate: Introduce XFEATURE_MASK_KERNEL_DYNAMIC xfeature set
Date: Mon, 10 Mar 2025 13:53:00 +0800 [thread overview]
Message-ID: <Z85+PPhKnkdN9pD6@intel.com> (raw)
In-Reply-To: <7bee70fd-b2b9-4466-a694-4bf3486b19c7@intel.com>
On Sun, Mar 09, 2025 at 10:20:47PM -0700, Chang S. Bae wrote:
>On 3/9/2025 8:49 PM, Chao Gao wrote:
>>
>> It was suggested by Sean [1].
>...
>> [1]: https://lore.kernel.org/kvm/ZTf5wPKXuHBQk0AN@google.com/
>
>But, you're defining a kernel "dynamic" feature while introducing a
>"guest-only" xfeature concept. Both seem to be mixed together with this
>patch. Why not call it as a guest-only feature? That's what Sean was
>suggesting, no?
Yes. I agree that we should call it as a guest-only feature. That's also why I
included a note in this patch below the "---" to seek feedback on the naming:
I am tempted to rename XFEATURE_MASK_KERNEL_DYNAMIC to
XFEATURE_MASK_GUEST_ONLY. But I am not sure if this was discussed
and rejected.
Thanks for confirming that the renaming is necessary.
next prev parent reply other threads:[~2025-03-10 5:53 UTC|newest]
Thread overview: 40+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-03-07 16:41 [PATCH v3 00/10] Introduce CET supervisor state support Chao Gao
2025-03-07 16:41 ` [PATCH v3 01/10] x86/fpu/xstate: Always preserve non-user xfeatures/flags in __state_perm Chao Gao
2025-03-07 16:41 ` [PATCH v3 02/10] x86/fpu/xstate: Drop @perm from guest pseudo FPU container Chao Gao
2025-03-07 16:41 ` [PATCH v3 03/10] x86/fpu/xstate: Correct xfeatures cache in guest pseudo fpu container Chao Gao
2025-03-07 17:48 ` Dave Hansen
2025-03-08 2:44 ` Chao Gao
2025-03-07 16:41 ` [PATCH v3 04/10] x86/fpu/xstate: Correct guest fpstate size calculation Chao Gao
2025-03-07 17:53 ` Dave Hansen
2025-03-08 2:56 ` Chao Gao
2025-03-07 21:37 ` Chang S. Bae
2025-03-08 2:49 ` Chao Gao
2025-03-09 22:06 ` Chang S. Bae
2025-03-10 1:33 ` Chao Gao
2025-03-10 5:21 ` Chang S. Bae
2025-03-10 7:06 ` Chao Gao
2025-03-10 17:33 ` Chang S. Bae
2025-03-11 12:09 ` Chao Gao
2025-03-12 1:03 ` Chang S. Bae
2025-03-07 16:41 ` [PATCH v3 05/10] x86/fpu/xstate: Introduce guest FPU configuration Chao Gao
2025-03-07 18:06 ` Dave Hansen
2025-03-08 3:00 ` Chao Gao
2025-03-07 16:41 ` [PATCH v3 06/10] x86/fpu/xstate: Initialize guest perm with fpu_guest_cfg Chao Gao
2025-03-07 18:14 ` Dave Hansen
2025-03-08 3:14 ` Chao Gao
2025-03-07 16:41 ` [PATCH v3 07/10] x86/fpu/xstate: Initialize guest fpstate with fpu_guest_config Chao Gao
2025-03-07 18:41 ` Dave Hansen
2025-03-08 3:38 ` Chao Gao
2025-03-07 16:41 ` [PATCH v3 08/10] x86/fpu/xstate: Add CET supervisor xfeature support Chao Gao
2025-03-07 18:39 ` Dave Hansen
2025-03-08 3:24 ` Chao Gao
2025-03-07 16:41 ` [PATCH v3 09/10] x86/fpu/xstate: Introduce XFEATURE_MASK_KERNEL_DYNAMIC xfeature set Chao Gao
2025-03-09 22:06 ` Chang S. Bae
2025-03-10 3:49 ` Chao Gao
2025-03-10 5:20 ` Chang S. Bae
2025-03-10 5:53 ` Chao Gao [this message]
2025-03-11 12:27 ` Chao Gao
2025-03-12 1:03 ` Chang S. Bae
2025-03-07 16:41 ` [PATCH v3 10/10] x86/fpu/xstate: Warn if CET supervisor state is detected in normal fpstate Chao Gao
2025-03-07 19:09 ` [PATCH v3 00/10] Introduce CET supervisor state support Dave Hansen
2025-03-18 15:24 ` Chao Gao
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