linux-kernel - Re: [PATCH] KVM: x86/mmu: fix comparison of u8 with -1

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Message-ID: <141f8e0da70a400282824a09bcb56501@huawei.com>
Date:   Wed, 27 Nov 2019 02:21:32 +0000
From:   linmiaohe <linmiaohe@...wei.com>
To:     Colin King <colin.king@...onical.com>,
        Paolo Bonzini <pbonzini@...hat.com>,
        Radim Krčmář <rkrcmar@...hat.com>,
        Sean Christopherson <sean.j.christopherson@...el.com>,
        Vitaly Kuznetsov <vkuznets@...hat.com>,
        Wanpeng Li <wanpengli@...cent.com>,
        Jim Mattson <jmattson@...gle.com>,
        Joerg Roedel <joro@...tes.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        Ingo Molnar <mingo@...hat.com>, Borislav Petkov <bp@...en8.de>,
        "H . Peter Anvin" <hpa@...or.com>,
        "x86@...nel.org" <x86@...nel.org>,
        "kvm@...r.kernel.org" <kvm@...r.kernel.org>,
        "clang-built-linux@...glegroups.com" 
        <clang-built-linux@...glegroups.com>
CC:     "kernel-janitors@...r.kernel.org" <kernel-janitors@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] KVM: x86/mmu: fix comparison of u8 with -1


> The comparison of the u8 value __entry->u with -1 is always going to be false because
> a __entry-u can never be negative.

s/__entry-u/__entry->u/

Thanks.