linux-kernel - RE: [PATCH V2 4/13] KVM/MMU: Flush tlb directly in the kvm_handle_hva

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Message-ID: <CY4PR21MB077308B3F20B235B994FF6A5DC1C0@CY4PR21MB0773.namprd21.prod.outlook.com>
Date:   Wed, 19 Sep 2018 16:08:58 +0000
From:   "Michael Kelley (EOSG)" <Michael.H.Kelley@...rosoft.com>
To:     Tianyu Lan <Tianyu.Lan@...rosoft.com>
CC:     KY Srinivasan <kys@...rosoft.com>,
        Haiyang Zhang <haiyangz@...rosoft.com>,
        Stephen Hemminger <sthemmin@...rosoft.com>,
        "tglx@...utronix.de" <tglx@...utronix.de>,
        "mingo@...hat.com" <mingo@...hat.com>,
        "hpa@...or.com" <hpa@...or.com>, "x86@...nel.org" <x86@...nel.org>,
        "pbonzini@...hat.com" <pbonzini@...hat.com>,
        "rkrcmar@...hat.com" <rkrcmar@...hat.com>,
        "devel@...uxdriverproject.org" <devel@...uxdriverproject.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "kvm@...r.kernel.org" <kvm@...r.kernel.org>,
        vkuznets <vkuznets@...hat.com>,
        Jork Loeser <Jork.Loeser@...rosoft.com>
Subject: RE: [PATCH V2 4/13] KVM/MMU: Flush tlb directly in the
 kvm_handle_hva_range()

From: Tianyu Lan  Sent: Monday, September 17, 2018 8:19 PM
> +
> +			if (ret && kvm_available_flush_tlb_with_range()) {
> +				kvm_flush_remote_tlbs_with_address(kvm,
> +						gfn_start,
> +						gfn_end - gfn_start);

Does the above need to be gfn_end - gfn_start + 1?

> +				ret = 0;
> +			}

Michael