linux-kernel - Re: [PATCH v7 0/9] x86/hyperv/hv_vtl: Use a wakeup mailbox to boot secondary CPUs

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] [day] [month] [year] [list]

Message-ID: <20251118051312.GA20802@ranerica-svr.sc.intel.com>
Date: Mon, 17 Nov 2025 21:13:12 -0800
From: Ricardo Neri <ricardo.neri-calderon@...ux.intel.com>
To: x86@...nel.org, Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>, Rob Herring <robh@...nel.org>,
	"K. Y. Srinivasan" <kys@...rosoft.com>,
	Haiyang Zhang <haiyangz@...rosoft.com>,
	Wei Liu <wei.liu@...nel.org>, Dexuan Cui <decui@...rosoft.com>,
	Michael Kelley <mhklinux@...look.com>,
	"Rafael J. Wysocki" <rafael@...nel.org>
Cc: Saurabh Sengar <ssengar@...ux.microsoft.com>,
	Chris Oo <cho@...rosoft.com>, "Kirill A. Shutemov" <kas@...nel.org>,
	linux-hyperv@...r.kernel.org, devicetree@...r.kernel.org,
	linux-acpi@...r.kernel.org, linux-kernel@...r.kernel.org,
	Ricardo Neri <ricardo.neri@...el.com>,
	"Rafael J. Wysocki (Intel)" <rafael.j.wysocki@...el.com>,
	Yunhong Jiang <yunhong.jiang@...ux.intel.com>,
	Thomas Gleixner <tglx@...utronix.de>
Subject: Re: [PATCH v7 0/9] x86/hyperv/hv_vtl: Use a wakeup mailbox to boot
 secondary CPUs

On Mon, Nov 17, 2025 at 09:02:46AM -0800, Ricardo Neri wrote:
> Hi,
> 
> Many thanks to Boris, Rafael, Rob, and Dexuan for their valuable feedback!
> The main change in this version is the removal of the patch that moved the
> ACPI mailbox code from the x86 ACPI subsystem to a generic location. Users
> with DeviceTree-based firmware who wish use the ACPI wakeup mailbox need to
> select CONFIG_ACPI=y.

Also, this patchset uncovered, IMHO, missing definitions in arch/x86/asm/
topology.h. I posted a patch for that effect here:

https://lore.kernel.org/all/20251117-rneri-topology-cpuinfo-bug-v1-1-a905bb5f91e2@linux.intel.com/

I can repost this patchset along with the patch above if it makes things
easier.

BR,
Ricardo