linux-kernel - Re: [PATCH v2 09/21] KVM:x86: Load guest FPU state when accessing xsaves-managed MSRs

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Message-ID: <2e5a167b-2923-e92a-b6ed-db6c2cba0827@intel.com>
Date:   Thu, 27 Apr 2023 23:57:00 +0800
From:   "Yang, Weijiang" <weijiang.yang@...el.com>
To:     Binbin Wu <binbin.wu@...ux.intel.com>
CC:     <seanjc@...gle.com>, <pbonzini@...hat.com>, <kvm@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>, <peterz@...radead.org>,
        <john.allen@....com>, <rick.p.edgecombe@...el.com>
Subject: Re: [PATCH v2 09/21] KVM:x86: Load guest FPU state when accessing
 xsaves-managed MSRs


On 4/27/2023 11:46 AM, Binbin Wu wrote:
>
>
> On 4/21/2023 9:46 PM, Yang Weijiang wrote:
>> From: Sean Christopherson <sean.j.christopherson@...el.com>
>>
>> Load the guest's FPU state if userspace is accessing MSRs whose 
>> values are
>> managed by XSAVES so that the MSR helpers, e.g. 
>> kvm_{get,set}_xsave_msr(),
> So far, kvm_{get,set}_xsave_msr() is not introduced yet.
> IMO, it is a bit confusing to understand the whole picture without the 
> following patches.
> May be add some description or adjust the order?

Sure, will add blurbs for the two helpers., thanks!

> [...]