Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18;
Date:   Mon, 22 Feb 2021 17:31:09 +0800
From:   Aili Yao <yaoaili@kingsoft.com>
To:     Borislav Petkov <bp@alien8.de>
CC:     <tony.luck@intel.com>, <mingo@redhat.com>, <tglx@linutronix.de>,
        <hpa@zytor.com>, <x86@kernel.org>, <linux-edac@vger.kernel.org>,
        <linux-kernel@vger.kernel.org>, <yangfeng1@kingsoft.com>
Subject: Re: [PATCH v2] x86/mce: fix wrong no-return-ip logic in
 do_machine_check()
Message-ID: <20210222173109.7b7ac42a@alex-virtual-machine>
In-Reply-To: <20210222092403.GA29063@zn.tnic>
References: <20210222113124.35f2d552@alex-virtual-machine>
        <20210222115007.75b7de9b@alex-virtual-machine>
        <20210222092403.GA29063@zn.tnic>
Organization: kingsoft
MIME-Version: 1.0
Content-Type: text/plain; charset="US-ASCII"
Content-Transfer-Encoding: 7bit
Precedence: bulk

On Mon, 22 Feb 2021 10:24:03 +0100
Borislav Petkov <bp@alien8.de> wrote:

> On Mon, Feb 22, 2021 at 11:50:07AM +0800, Aili Yao wrote:
> > From commit b2f9d678e28c ("x86/mce: Check for faults tagged in
> > EXTABLE_CLASS_FAULT exception table entries"), When there is a
> > memory MCE_AR_SEVERITY error with no return ip,  
> 
> What is a "no return ip" - MCG_STATUS_RIPV?

yes 

> How do you trigger this error?

you can inject a memory UE to a VM, it should always be MCG_STATUS_RIPV 0.

Best Regard!
Aili Yao