linux-kernel - Re: [PATCH hyperv-next v6 01/11] arm64: kvm, smccc: Introduce and use API for detecting hypervisor presence

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Message-Id: <50ec2615-97cf-423d-bfe6-f65092a14348@app.fastmail.com>
Date: Sat, 15 Mar 2025 14:12:24 +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>,
 "Dan Carpenter" <dan.carpenter@...aro.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 v6 01/11] arm64: kvm, smccc: Introduce and use API for
 detecting hypervisor presence

On Sat, Mar 15, 2025, at 01:27, Roman Kisel wrote:
> On 3/14/2025 5:19 PM, Roman Kisel wrote:
>
> While the change is Acked, here is the caveat maybe.
>
> This patch produces warnings wtih sparse and CHECK_ENDING.
> That said, the kernel build produces a whole lot more other warnings
> from building with sparse by itself and/or with CHECK_ENDING.
>
> I am not sure how to proceed with that, thinking I should
> not add warnings yet at the same time there are many others.
> Not certain if folks take these signals as fyi or blockers.

It would be best not to add warnigns. There is slow progress on
fixing all the endianess warnings and I hope this can eventually
complete, so even if there are many existing ones please try to
keep new code clean.

     Arnd