linux-kernel - Re: [PATCH v3 00/23] Opt-in always-on nVHE hypervisor

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <20201126162338.GV4327@casper.infradead.org>
Date:   Thu, 26 Nov 2020 16:23:38 +0000
From:   Matthew Wilcox <willy@...radead.org>
To:     Marc Zyngier <maz@...nel.org>
Cc:     David Brazdil <dbrazdil@...gle.com>, kvmarm@...ts.cs.columbia.edu,
        Jonathan Corbet <corbet@....net>,
        Catalin Marinas <catalin.marinas@....com>,
        Will Deacon <will@...nel.org>,
        James Morse <james.morse@....com>,
        Julien Thierry <julien.thierry.kdev@...il.com>,
        Suzuki K Poulose <suzuki.poulose@....com>,
        Dennis Zhou <dennis@...nel.org>, Tejun Heo <tj@...nel.org>,
        Christoph Lameter <cl@...ux.com>,
        Mark Rutland <mark.rutland@....com>,
        Lorenzo Pieralisi <lorenzo.pieralisi@....com>,
        Sudeep Holla <sudeep.holla@....com>, linux-doc@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        kernel-team@...roid.com
Subject: Re: [PATCH v3 00/23] Opt-in always-on nVHE hypervisor

On Thu, Nov 26, 2020 at 04:19:55PM +0000, Marc Zyngier wrote:
> On 2020-11-26 15:57, Matthew Wilcox wrote:
> > On Thu, Nov 26, 2020 at 03:53:58PM +0000, David Brazdil wrote:
> > > The hypervisor starts trapping host SMCs and intercepting host's PSCI
> > > CPU_ON/SUSPEND calls. It replaces the host's entry point with its own,
> > > initializes the EL2 state of the new CPU and installs the nVHE hyp
> > > vector
> > > before ERETing to the host's entry point.
> > 
> > I hate CPU people.  This is complete gibberish to anyone who doesn't
> > already have their head deep in ... whatever you're talking about.
> 
> What I hate the most is people having a go at other people because they
> don't understand what is being discussed. Who is at fault there?

The person who wrote an explanation that doesn't actually explain
anything?  If you're sending mail to a bunch of mailing lists which
aren't already familiar with what you're trying to do, the onus is on
you to do more explanation.