linux-kernel - Re: [PATCH] KVM: VMX: Use wrapper macro ~RMODE_GUEST_OWNED_EFLAGS

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Date:   Fri, 6 Mar 2020 06:32:49 +0100
From:   Paolo Bonzini <pbonzini@...hat.com>
To:     linmiaohe <linmiaohe@...wei.com>,
        "vkuznets@...hat.com" <vkuznets@...hat.com>
Cc:     "rkrcmar@...hat.com" <rkrcmar@...hat.com>,
        "sean.j.christopherson@...el.com" <sean.j.christopherson@...el.com>,
        "jmattson@...gle.com" <jmattson@...gle.com>,
        "joro@...tes.org" <joro@...tes.org>,
        "tglx@...utronix.de" <tglx@...utronix.de>,
        "mingo@...hat.com" <mingo@...hat.com>,
        "bp@...en8.de" <bp@...en8.de>, "hpa@...or.com" <hpa@...or.com>,
        "kvm@...r.kernel.org" <kvm@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "x86@...nel.org" <x86@...nel.org>
Subject: Re: [PATCH] KVM: VMX: Use wrapper macro
 ~RMODE_GUEST_OWNED_EFLAGS_BITS directly

On 06/03/20 03:17, linmiaohe wrote:
> Define a macro RMODE_HOST_OWNED_EFLAGS_BITS for (X86_EFLAGS_IOPL |
> X86_EFLAGS_VM) as suggested by Vitaly seems a good way to fix this ?
> Thanks.

No, what if a host-owned flag was zero?  I'd just leave it as is.

Paolo