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Re: [PATCH v11 2/6] x86/altp2m: Wrap altp2m-specific code in #ifdef CONFIG_ALTP2M
- To: Petr Beneš <w1benny@xxxxxxxxx>
- From: Jan Beulich <jbeulich@xxxxxxxx>
- Date: Thu, 31 Jul 2025 11:04:35 +0200
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- Cc: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>, Roger Pau Monné <roger.pau@xxxxxxxxxx>, Tamas K Lengyel <tamas@xxxxxxxxxxxxx>, Alexandru Isaila <aisaila@xxxxxxxxxxxxxxx>, Petre Pircalabu <ppircalabu@xxxxxxxxxxxxxxx>, xen-devel@xxxxxxxxxxxxxxxxxxxx
- Delivery-date: Thu, 31 Jul 2025 09:04:49 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
On 30.07.2025 12:38, Petr Beneš wrote:
> --- a/xen/arch/x86/include/asm/p2m.h
> +++ b/xen/arch/x86/include/asm/p2m.h
> @@ -889,6 +889,8 @@ void shadow_p2m_init(struct p2m_domain *p2m);
> void cf_check nestedp2m_write_p2m_entry_post(
> struct p2m_domain *p2m, unsigned int oflags);
>
> +#ifdef CONFIG_ALTP2M
> +
> /*
> * Alternate p2m: shadow p2m tables used for alternate memory views
> */
> @@ -965,6 +967,16 @@ int p2m_set_altp2m_view_visibility(struct domain *d,
> unsigned int altp2m_idx,
>
> #else /* !CONFIG_HVM */
> struct p2m_domain *p2m_get_altp2m(struct vcpu *v);
> +bool p2m_set_altp2m(struct vcpu *v, unsigned int idx);
> +bool p2m_altp2m_get_or_propagate(struct p2m_domain *ap2m, unsigned long
> gfn_l,
> + mfn_t *mfn, p2m_type_t *p2mt,
> + p2m_access_t *p2ma, unsigned int
> *page_order);
> +int p2m_altp2m_propagate_change(struct domain *d, gfn_t gfn,
> + mfn_t mfn, unsigned int page_order,
> + p2m_type_t p2mt, p2m_access_t p2ma);
These latter two already have declarations; we don't want to have two of them,
as they may then go out of sync. They simply want to move out of the #ifdef,
imo.
Jan
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