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Re: [PATCH v2 10/35] xen/domain: add get_initial_domain_id()
- To: dmukhin@xxxxxxxx
- From: Jan Beulich <jbeulich@xxxxxxxx>
- Date: Tue, 10 Dec 2024 14:50:40 +0100
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- Cc: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>, Julien Grall <julien@xxxxxxx>, Stefano Stabellini <sstabellini@xxxxxxxxxx>, xen-devel@xxxxxxxxxxxxxxxxxxxx
- Delivery-date: Tue, 10 Dec 2024 13:51:00 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
On 06.12.2024 05:41, Denis Mukhin via B4 Relay wrote:
> Move get_initial_domain_id() to a public API and enable for all architectures.
> That is pre-requisite change for console focus switch logic cleanup.
Yet then how does this fit with dom0less, let alone hyperlaunch,
where multiple domains may be created right when Xen starts?
Plus, if you make this generic, shouldn't Arm also be adjusted to
use this function (if nothing else then to avoid things going out
of sync later on)?
> @@ -2229,6 +2230,15 @@ int continue_hypercall_on_cpu(
> return 0;
> }
>
> +domid_t get_initial_domain_id(void)
> +{
> +#ifdef CONFIG_X86
> + return pv_shim_initial_domain_id();
> +#else
> + return 0;
> +#endif
> +}
Imo this either wants to use CONFIG_PV_SHIM instead, eliminating the
need for the pv_shim_initial_domain_id() stub.
Jan
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