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[91.219.240.17]) by smtp.gmail.com with ESMTPSA id 5b1f17b1804b1-441b89d1636sm169563715e9.13.2025.05.06.06.34.26 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 06 May 2025 06:34:26 -0700 (PDT) From: Vitaly Kuznetsov To: Ingo Molnar , linux-kernel@vger.kernel.org Cc: "H . Peter Anvin" , Linus Torvalds , Peter Zijlstra , Borislav Petkov , Thomas Gleixner , Ingo Molnar , Ard Biesheuvel , Arnd Bergmann , Carlos Bilbao , David Woodhouse , Elena Reshetova , Fei Li , Jan Kiszka , Juergen Gross , "Kirill A . Shutemov" , Masahiro Yamada , Michal Marek , Paolo Bonzini , Sean Christopherson , Stefano Stabellini Subject: Re: [PATCH 09/15] x86/kconfig/64: Enable more virtualization guest options in the defconfig: enable Xen, Xen_PVH, Jailhouse, ACRN and Intel TDX In-Reply-To: <20250505110946.1095363-10-mingo@kernel.org> References: <20250505110946.1095363-1-mingo@kernel.org> <20250505110946.1095363-10-mingo@kernel.org> Date: Tue, 06 May 2025 15:34:25 +0200 Message-ID: <87msbp278e.fsf@redhat.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain Ingo Molnar writes: > 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 > - Jailhouse > - ACRN > - Intel TDX Out of curiosity and to get the idea what's good for defconfig and what's not: do we want to enable Hyper-V and its drivers as well? I think all popular distros enable it nowdays because of Azure. E.g. CONFIG_PCI_HYPERV=m CONFIG_HYPERV_STORAGE=m CONFIG_HYPERV_NET=m CONFIG_HYPERV_KEYBOARD=m CONFIG_DRM_HYPERV=m CONFIG_HID_HYPERV_MOUSE=m CONFIG_HYPERV=m CONFIG_HYPERV_UTILS=m CONFIG_HYPERV_BALLOON=m > > Signed-off-by: Ingo Molnar > Cc: Ard Biesheuvel > Cc: Arnd Bergmann > Cc: Carlos Bilbao > Cc: David Woodhouse > Cc: Elena Reshetova > Cc: Fei Li > Cc: H. Peter Anvin > Cc: Jan Kiszka > Cc: Juergen Gross > Cc: Kirill A. Shutemov > Cc: Linus Torvalds > Cc: Masahiro Yamada > Cc: Michal Marek > Cc: Paolo Bonzini > Cc: Sean Christopherson > Cc: Stefano Stabellini > Cc: Vitaly Kuznetsov > --- > arch/x86/configs/defconfig.x86_64 | 6 ++++++ > 1 file changed, 6 insertions(+) > > diff --git a/arch/x86/configs/defconfig.x86_64 b/arch/x86/configs/defconfig.x86_64 > index 156e9490e29b..514f8fdc2102 100644 > --- a/arch/x86/configs/defconfig.x86_64 > +++ b/arch/x86/configs/defconfig.x86_64 > @@ -31,6 +31,12 @@ CONFIG_KEXEC=y > CONFIG_SMP=y > CONFIG_HYPERVISOR_GUEST=y > CONFIG_PARAVIRT=y > +CONFIG_PARAVIRT_SPINLOCKS=y > +CONFIG_XEN=y > +CONFIG_XEN_PVH=y > +CONFIG_JAILHOUSE_GUEST=y > +CONFIG_ACRN_GUEST=y > +CONFIG_INTEL_TDX_GUEST=y > CONFIG_X86_REROUTE_FOR_BROKEN_BOOT_IRQS=y > CONFIG_X86_MSR=y > CONFIG_X86_CPUID=y -- Vitaly