linux-kernel - Re: [PATCH 09/15] x86/kconfig/64: Enable more virtualization guest options in the defconfig: enable Xen, Xen_PVH, Jailhouse, ACRN, Intel TDX and Hyper-V

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Message-ID: <26c14b81-5eaa-48c2-9b28-518687fe9ea3@suse.com>
Date: Thu, 8 May 2025 11:21:26 +0200
From: Jürgen Groß <jgross@...e.com>
To: Ingo Molnar <mingo@...nel.org>, linux-kernel@...r.kernel.org
Cc: "H . Peter Anvin" <hpa@...or.com>,
 Linus Torvalds <torvalds@...ux-foundation.org>,
 Peter Zijlstra <peterz@...radead.org>, Borislav Petkov <bp@...en8.de>,
 Thomas Gleixner <tglx@...utronix.de>, Vitaly Kuznetsov
 <vkuznets@...hat.com>, "Kirill A . Shutemov"
 <kirill.shutemov@...ux.intel.com>, Ard Biesheuvel <ardb@...nel.org>,
 Arnd Bergmann <arnd@...db.de>, Carlos Bilbao <carlos.bilbao@...nel.org>,
 David Woodhouse <dwmw@...zon.co.uk>,
 Elena Reshetova <elena.reshetova@...el.com>, Fei Li <fei1.li@...el.com>,
 Jan Kiszka <jan.kiszka@...mens.com>,
 Masahiro Yamada <yamada.masahiro@...ionext.com>,
 Michal Marek <michal.lkml@...kovi.net>, Paolo Bonzini <pbonzini@...hat.com>,
 Sean Christopherson <seanjc@...gle.com>,
 Stefano Stabellini <sstabellini@...nel.org>
Subject: Re: [PATCH 09/15] x86/kconfig/64: Enable more virtualization guest
 options in the defconfig: enable Xen, Xen_PVH, Jailhouse, ACRN, Intel TDX and
 Hyper-V

On 06.05.25 19:09, Ingo Molnar wrote:
> Since the x86 defconfig aims to be a distro kernel work-alike with
> fewer drivers and a shorter build time, refresh all the virtualization
> guest Kconfig features, enabling paravirt spinlocks, and
> enabling the guest support code for the following guests:
> 
>   - Xen
>   - Xen_PVH

With those it might be a good idea to add:

CONFIG_XEN_BLKDEV_FRONTEND=m
CONFIG_XEN_NETDEV_FRONTEND=m
CONFIG_HVC_XEN=y
CONFIG_XEN_BALLOON=y

Juergen

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