linux-kernel - Re: [PATCH v9 05/27] x86/fpu/xstate: Introduce fpu_guest

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Date: Tue, 30 Jan 2024 01:29:55 +0000
From: "Edgecombe, Rick P" <rick.p.edgecombe@...el.com>
To: "Yang, Weijiang" <weijiang.yang@...el.com>, "Hansen, Dave"
	<dave.hansen@...el.com>, "seanjc@...gle.com" <seanjc@...gle.com>,
	"x86@...nel.org" <x86@...nel.org>, "linux-kernel@...r.kernel.org"
	<linux-kernel@...r.kernel.org>, "yuan.yao@...ux.intel.com"
	<yuan.yao@...ux.intel.com>, "kvm@...r.kernel.org" <kvm@...r.kernel.org>,
	"pbonzini@...hat.com" <pbonzini@...hat.com>
CC: "john.allen@....com" <john.allen@....com>, "peterz@...radead.org"
	<peterz@...radead.org>, "Gao, Chao" <chao.gao@...el.com>,
	"mlevitsk@...hat.com" <mlevitsk@...hat.com>
Subject: Re: [PATCH v9 05/27] x86/fpu/xstate: Introduce fpu_guest_cfg for
 guest FPU configuration

On Tue, 2024-01-23 at 18:41 -0800, Yang Weijiang wrote:
> Define new fpu_guest_cfg to hold all guest FPU settings so that it
> can
> differ from generic kernel FPU settings, e.g., enabling CET
> supervisor
> xstate by default for guest fpstate while it's remained disabled in
> kernel FPU config.
> 
> The kernel dynamic xfeatures are specifically used by guest fpstate
> now,
> add the mask for guest fpstate so that guest_perm.__state_permit ==

I think you mean 'guest_perm.__state_perm'.

Otherwise:
Reviewed-by: Rick Edgecombe <rick.p.edgecombe@...el.com>