linux-kernel - Re: [PATCH hyperv-next v5 01/11] arm64: kvm, smccc: Introduce and use API for detectting hypervisor presence

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: <d15274c2-6d61-4db3-ab0f-90591d28bc34@app.fastmail.com>
Date: Sat, 08 Mar 2025 22:08:39 +0100
From: "Arnd Bergmann" <arnd@...db.de>
To: "Roman Kisel" <romank@...ux.microsoft.com>, bhelgaas@...gle.com,
 "Borislav Petkov" <bp@...en8.de>,
 "Catalin Marinas" <catalin.marinas@....com>,
 "Conor Dooley" <conor+dt@...nel.org>,
 "Dave Hansen" <dave.hansen@...ux.intel.com>,
 "Dexuan Cui" <decui@...rosoft.com>,
 "Haiyang Zhang" <haiyangz@...rosoft.com>,
 "H. Peter Anvin" <hpa@...or.com>, "Joey Gouly" <joey.gouly@....com>,
 krzk+dt@...nel.org, Krzysztof Wilczyński <kw@...ux.com>,
 "K. Y. Srinivasan" <kys@...rosoft.com>, "Len Brown" <lenb@...nel.org>,
 "Lorenzo Pieralisi" <lpieralisi@...nel.org>,
 "Manivannan Sadhasivam" <manivannan.sadhasivam@...aro.org>,
 "Mark Rutland" <mark.rutland@....com>, "Marc Zyngier" <maz@...nel.org>,
 "Ingo Molnar" <mingo@...hat.com>,
 "Oliver Upton" <oliver.upton@...ux.dev>,
 "Rafael J . Wysocki" <rafael@...nel.org>,
 "Rob Herring" <robh@...nel.org>, ssengar@...ux.microsoft.com,
 "Sudeep Holla" <sudeep.holla@....com>,
 "Suzuki K Poulose" <suzuki.poulose@....com>,
 "Thomas Gleixner" <tglx@...utronix.de>, "Wei Liu" <wei.liu@...nel.org>,
 "Will Deacon" <will@...nel.org>, "Zenghui Yu" <yuzenghui@...wei.com>,
 devicetree@...r.kernel.org, kvmarm@...ts.linux.dev,
 linux-acpi@...r.kernel.org, Linux-Arch <linux-arch@...r.kernel.org>,
 linux-arm-kernel@...ts.infradead.org, linux-hyperv@...r.kernel.org,
 linux-kernel@...r.kernel.org, linux-pci@...r.kernel.org, x86@...nel.org
Cc: apais@...rosoft.com, benhill@...rosoft.com, bperkins@...rosoft.com,
 sunilmut@...rosoft.com
Subject: Re: [PATCH hyperv-next v5 01/11] arm64: kvm, smccc: Introduce and use API for
 detectting hypervisor presence

On Fri, Mar 7, 2025, at 23:02, Roman Kisel wrote:
> The KVM/arm64 uses SMCCC to detect hypervisor presence. That code is
> private, and it follows the SMCCC specification. Other existing and
> emerging hypervisor guest implementations can and should use that
> standard approach as well.
>
> Factor out a common infrastructure that the guests can use, update KVM
> to employ the new API. The cenrtal notion of the SMCCC method is the
> UUID of the hypervisor, and the API follows that.
>
> No functional changes. Validated with a KVM/arm64 guest.
>
> Signed-off-by: Roman Kisel <romank@...ux.microsoft.com>

Acked-by: Arnd Bergmann <arnd@...db.de>