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

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Message-ID: <ZJsXl6emfV2yr4rs@google.com>
Date:   Tue, 27 Jun 2023 10:08:39 -0700
From:   Sean Christopherson <seanjc@...gle.com>
To:     Zeng Guang <guang.zeng@...el.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,
        x86@...nel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v1 0/6] LASS KVM virtualization support

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

> 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)