linux-kernel - Re: [PATCH v1 0/6] LASS KVM virtualization support

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Date:   Wed, 28 Jun 2023 16:42:17 +0800
From:   Zeng Guang <guang.zeng@...el.com>
To:     Sean Christopherson <seanjc@...gle.com>
Cc:     Paolo Bonzini <pbonzini@...hat.com>,
        Thomas Gleixner <tglx@...utronix.de>,
        Ingo Molnar <mingo@...hat.com>, Borislav Petkov <bp@...en8.de>,
        Dave Hansen <dave.hansen@...ux.intel.com>,
        H Peter Anvin <hpa@...or.com>,
        "kvm@...r.kernel.org" <kvm@...r.kernel.org>,
        "x86@...nel.org" <x86@...nel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v1 0/6] LASS KVM virtualization support


On 6/28/2023 1:08 AM, Sean Christopherson wrote:
> On Thu, Jun 01, 2023, Zeng Guang wrote:
>> This patch series provide a LASS KVM solution.
> ... and depends on kernel enabling that can be found at
>
> https://lore.kernel.org/all/20230609183632.48706-1-alexander.shishkin@linux.intel.com
OK. I will add the dependency statement in next version.
>> We tested the basic function of LASS virtualization including LASS
>> enumeration and enabling in non-root and nested environment. As KVM
>> unittest framework is not compatible to LASS rule, we use kernel module
>> and application test to emulate LASS violation instead. With KVM forced
>> emulation mechanism, we also verified the LASS functionality on some
>> emulation path with instruction fetch and data access to have same
>> behavior as hardware.
>>
>> [1] Intel ISE https://cdrdv2.intel.com/v1/dl/getContent/671368
>> Chapter Linear Address Space Separation (LASS)