linux-kernel - Re: [PATCH v5 2/7] x86/fpu: Drop @perm from guest pseudo FPU container

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Message-ID: <6be7de70-c6d7-41d8-8c68-ece3c3930425@intel.com>
Date: Fri, 18 Apr 2025 13:54:05 -0700
From: "Chang S. Bae" <chang.seok.bae@...el.com>
To: Chao Gao <chao.gao@...el.com>, <x86@...nel.org>,
	<linux-kernel@...r.kernel.org>, <kvm@...r.kernel.org>, <tglx@...utronix.de>,
	<dave.hansen@...el.com>, <seanjc@...gle.com>, <pbonzini@...hat.com>
CC: <peterz@...radead.org>, <rick.p.edgecombe@...el.com>,
	<weijiang.yang@...el.com>, <john.allen@....com>, <bp@...en8.de>,
	<xin3.li@...el.com>, Maxim Levitsky <mlevitsk@...hat.com>, Ingo Molnar
	<mingo@...hat.com>, Dave Hansen <dave.hansen@...ux.intel.com>, "H. Peter
 Anvin" <hpa@...or.com>, Samuel Holland <samuel.holland@...ive.com>, "Mitchell
 Levy" <levymitchell0@...il.com>, Stanislav Spassov <stanspas@...zon.de>,
	"Eric Biggers" <ebiggers@...gle.com>
Subject: Re: [PATCH v5 2/7] x86/fpu: Drop @perm from guest pseudo FPU
 container

On 4/18/2025 1:51 PM, Chang S. Bae wrote:
>      if (xstate_get_guest_group_perm() & FPU_GUEST_PERM_LOCKED)
>          fpu_lock_guest_permissions();

Sorry, this should be:

     if (!(xstate_get_guest_group_perm() & FPU_GUEST_PERM_LOCKED))
         fpu_lock_guest_permissions();