linux-kernel - RE: [PATCH v4 0/7] hyperv: Introduce new way to manage hypercall args

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:
 <SN6PR02MB41570625E2F061C5E494C7F4D450A@SN6PR02MB4157.namprd02.prod.outlook.com>
Date: Fri, 18 Jul 2025 17:13:12 +0000
From: Michael Kelley <mhklinux@...look.com>
To: Easwar Hariharan <eahariha@...ux.microsoft.com>
CC: "kys@...rosoft.com" <kys@...rosoft.com>, "haiyangz@...rosoft.com"
	<haiyangz@...rosoft.com>, "wei.liu@...nel.org" <wei.liu@...nel.org>,
	"decui@...rosoft.com" <decui@...rosoft.com>, "tglx@...utronix.de"
	<tglx@...utronix.de>, "mingo@...hat.com" <mingo@...hat.com>, "bp@...en8.de"
	<bp@...en8.de>, "dave.hansen@...ux.intel.com" <dave.hansen@...ux.intel.com>,
	"hpa@...or.com" <hpa@...or.com>, "lpieralisi@...nel.org"
	<lpieralisi@...nel.org>, "kw@...ux.com" <kw@...ux.com>, "mani@...nel.org"
	<mani@...nel.org>, "robh@...nel.org" <robh@...nel.org>, "bhelgaas@...gle.com"
	<bhelgaas@...gle.com>, "arnd@...db.de" <arnd@...db.de>, "x86@...nel.org"
	<x86@...nel.org>, "linux-hyperv@...r.kernel.org"
	<linux-hyperv@...r.kernel.org>, "linux-kernel@...r.kernel.org"
	<linux-kernel@...r.kernel.org>, "linux-pci@...r.kernel.org"
	<linux-pci@...r.kernel.org>, "linux-arch@...r.kernel.org"
	<linux-arch@...r.kernel.org>
Subject: RE: [PATCH v4 0/7] hyperv: Introduce new way to manage hypercall args

From: Easwar Hariharan <eahariha@...ux.microsoft.com> Sent: Friday, July 18, 2025 9:33 AM
> 
> On 7/17/2025 9:55 PM, mhkelley58@...il.com wrote:
> > From: Michael Kelley <mhklinux@...look.com>
> >

[snip]

> >
> > The new code compiles and runs successfully on x86 and arm64. However,
> > basic smoke tests cover only a limited number of hypercall call sites
> > that have been modified. I don't have the hardware or Hyper-V
> > configurations needed to test running in the Hyper-V root partition
> > or running in a VTL other than VTL 0. The related hypercall call sites
> > still need to be tested to make sure I didn't break anything. Hopefully
> > someone with the necessary configurations and Hyper-V versions can
> > help with that testing.

Easwar -- 

Thanks for reviewing.

Any chance you (or someone else) could do a quick smoke test of this
patch set when running in the Hyper-V root partition, and separately,
when running in VTL2?  Some hypercall call sites are modified that
don't get called in normal VTL0 execution. It just needs a quick
verification that nothing is obviously broken for the root partition and
VTL2 cases.

Michael

> >
> > This patch set is built against linux-next20250716.
> >

[snip]
> 
> Thank you for spinning this version!
> 
> For the series,
> 
> Reviewed-by: Easwar Hariharan <eahariha@...ux.microsoft.com>