From: Chao Gao <chao.gao@intel.com>
To: Dave Hansen <dave.hansen@intel.com>
Cc: <tglx@linutronix.de>, <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>,
"Maxim Levitsky" <mlevitsk@redhat.com>
Subject: Re: [PATCH v3 05/10] x86/fpu/xstate: Introduce guest FPU configuration
Date: Sat, 8 Mar 2025 11:00:28 +0800 [thread overview]
Message-ID: <Z8uyzKfg0sfcfZB3@intel.com> (raw)
In-Reply-To: <cde2e31a-af2b-4236-a5b7-e1119c62b4a5@intel.com>
On Fri, Mar 07, 2025 at 10:06:56AM -0800, Dave Hansen wrote:
>On 3/7/25 08:41, Chao Gao wrote:
>> + fpu_guest_cfg.max_features = fpu_kernel_cfg.max_features;
>> + fpu_guest_cfg.default_features = fpu_guest_cfg.max_features;
>> + fpu_guest_cfg.default_features &= ~XFEATURE_MASK_USER_DYNAMIC;
>
>Is just copying and pasting the 'fpu_kernel_cfg' initialization really
>the best way to explain what's going on?
>
>Let's say you just did:
>
> fpu_guest_cfg = fpu_kernel_cfg;
>
>?
>
>That would explicitly tell the reader that they're equal.
>
Yes. This is much better.
>
next prev parent reply other threads:[~2025-03-08 3:01 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 [this message]
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
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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