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From: Jan Beulich <jbeulich@suse.com>
To: Jason Andryuk <jason.andryuk@amd.com>
Cc: Andrew Cooper <andrew.cooper3@citrix.com>,
	xen-devel@lists.xenproject.org, linux-kernel@vger.kernel.org,
	Stefano Stabellini <sstabellini@kernel.org>,
	Juergen Gross <jgross@suse.com>,
	Boris Ostrovsky <boris.ostrovsky@oracle.com>,
	Thomas Gleixner <tglx@kernel.org>, Ingo Molnar <mingo@redhat.com>,
	Borislav Petkov <bp@alien8.de>,
	Dave Hansen <dave.hansen@linux.intel.com>,
	x86@kernel.org, "H. Peter Anvin" <hpa@zytor.com>,
	Jason Andryuk <jandryuk@gmail.com>
Subject: Re: [PATCH 2/2] xen/Kconfig: select XEN_PVHVM
Date: Thu, 6 Aug 2026 08:20:13 +0200	[thread overview]
Message-ID: <d44f3abc-8b64-4542-bb10-936626c418a2@suse.com> (raw)
In-Reply-To: <20260806015233.202486-3-jason.andryuk@amd.com>

On 06.08.2026 03:52, Jason Andryuk wrote:
> --- a/arch/x86/xen/Kconfig
> +++ b/arch/x86/xen/Kconfig
> @@ -51,7 +51,7 @@ config XEN_PV_DOM0
>  	depends on XEN_PV && XEN_DOM0
>  
>  config XEN_PVHVM
> -	def_bool y
> +	bool
>  	depends on XEN && X86_LOCAL_APIC

Imo "depends on" on prompt-less, default-off options are at best unhelpful
in the common case. (Aiui it can be helpful when "imply" is used instead of
"select".) Hence I think this dependency wants dropping right in this patch,
justified further by ...

> @@ -61,13 +61,15 @@ config XEN_PVHVM_SMP
>  config XEN_PVHVM_GUEST
>  	bool "Xen PVHVM guest support"
>  	default y
> -	depends on XEN_PVHVM && PCI
> +	depends on XEN && PCI
> +	select XEN_PVHVM
>  	help
>  	  Support running as a Xen PVHVM guest.
>  
>  config XEN_PVH
>  	bool "Xen PVH guest support"
> -	depends on XEN && XEN_PVHVM && ACPI
> +	depends on XEN && ACPI
> +	select XEN_PVHVM
>  	select PVH
>  	help
>  	  Support for running as a Xen PVH guest.

... the XEN dependency being in both of the options selecting XEN_PVHVM and,
as per Jürgen's patch, X86_LOCAL_APIC being redundant anyway.

Jan

  reply	other threads:[~2026-08-06  6:20 UTC|newest]

Thread overview: 10+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-08-06  1:52 [PATCH 0/2] xen: Fix PV-only build Jason Andryuk
2026-08-06  1:52 ` [PATCH 1/2] xen/events: Fix xen_set_upcall_vector stub Jason Andryuk
2026-08-06  1:52 ` [PATCH 2/2] xen/Kconfig: select XEN_PVHVM Jason Andryuk
2026-08-06  6:20   ` Jan Beulich [this message]
2026-08-06 10:55 ` [PATCH 0/2] xen: Fix PV-only build Juergen Gross
2026-08-06 11:31   ` Jan Beulich
2026-08-06 12:00     ` Jürgen Groß
2026-08-06 13:24       ` Jason Andryuk
2026-08-06 13:31         ` Juergen Gross
2026-08-06 13:58           ` Jason Andryuk

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