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Re: [PATCH v3 20/24] x86/hvm: add HVM-specific Kconfig
- To: dmukhin@xxxxxxxx
- From: Jan Beulich <jbeulich@xxxxxxxx>
- Date: Thu, 30 Jan 2025 14:12:04 +0100
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- Cc: Stefano Stabellini <sstabellini@xxxxxxxxxx>, Julien Grall <julien@xxxxxxx>, Michal Orzel <michal.orzel@xxxxxxx>, Andrew Cooper <andrew.cooper3@xxxxxxxxxx>, Anthony PERARD <anthony.perard@xxxxxxxxxx>, Roger Pau Monné <roger.pau@xxxxxxxxxx>, xen-devel@xxxxxxxxxxxxxxxxxxxx
- Delivery-date: Thu, 30 Jan 2025 13:12:15 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
On 04.01.2025 02:58, Denis Mukhin via B4 Relay wrote:
> From: Denis Mukhin <dmukhin@xxxxxxxx>
>
> Add separate menu for configuring HVM build-time settings to help organizing
> HVM-specific options.
>
> Signed-off-by: Denis Mukhin <dmukhin@xxxxxxxx>
Largely: Why not. Question is whether what is being moved now may
eventually require moving back, if support was extended to PV (MEM_PAGING
and MEM_SHARING). That doesn't look very likely though.
> --- a/xen/arch/x86/Kconfig
> +++ b/xen/arch/x86/Kconfig
> @@ -30,7 +30,6 @@ config X86
> select HAS_SCHED_GRANULARITY
> select HAS_UBSAN
> select HAS_VMAP
> - select HAS_VPCI if HVM
> select NEEDS_LIBELF
I don't mind the movement of this line, but I'd like to point out that it
may be beneficial to have all selects of HAS_* in a central place. Views
of other maintainers (or of course anyone else) appreciated.
> --- /dev/null
> +++ b/xen/arch/x86/hvm/Kconfig
> @@ -0,0 +1,74 @@
> +menuconfig HVM
> + bool "HVM support"
> + depends on !PV_SHIM_EXCLUSIVE
> + default !PV_SHIM
> + select COMPAT
> + select IOREQ_SERVER
> + select MEM_ACCESS_ALWAYS_ON
> + select HAS_VPCI
We strive to have such lists of selects sorted alphabetically, preventing
everyone to add to the end of the list (in turn reducing the risk of
patches conflicting).
Jan
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