linux-kernel - Re: [PATCH] [v2] x86: xen: add missing prototypes

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Message-ID: <35c82bbd-4c33-05da-1252-6eeec946ea22@oracle.com>
Date:   Fri, 19 May 2023 18:24:32 -0400
From:   Boris Ostrovsky <boris.ostrovsky@...cle.com>
To:     Arnd Bergmann <arnd@...nel.org>, Juergen Gross <jgross@...e.com>,
        Thomas Gleixner <tglx@...utronix.de>,
        Ingo Molnar <mingo@...hat.com>, Borislav Petkov <bp@...en8.de>,
        Dave Hansen <dave.hansen@...ux.intel.com>, x86@...nel.org,
        Stefano Stabellini <sstabellini@...nel.org>
Cc:     Arnd Bergmann <arnd@...db.de>, "H. Peter Anvin" <hpa@...or.com>,
        Oleksandr Tyshchenko <oleksandr_tyshchenko@...m.com>,
        "Peter Zijlstra (Intel)" <peterz@...radead.org>,
        xen-devel@...ts.xenproject.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] [v2] x86: xen: add missing prototypes



On 5/19/23 5:28 AM, Arnd Bergmann wrote:

> diff --git a/arch/x86/xen/smp.h b/arch/x86/xen/smp.h
> index 22fb982ff971..81a7821dd07f 100644
> --- a/arch/x86/xen/smp.h
> +++ b/arch/x86/xen/smp.h
> @@ -1,7 +1,11 @@
>   /* SPDX-License-Identifier: GPL-2.0 */
>   #ifndef _XEN_SMP_H
>   
> +void asm_cpu_bringup_and_idle(void);
> +asmlinkage void cpu_bringup_and_idle(void);

These can go under CONFIG_SMP

> +
>   #ifdef CONFIG_SMP
> +
>   extern void xen_send_IPI_mask(const struct cpumask *mask,
>   			      int vector);
>   extern void xen_send_IPI_mask_allbutself(const struct cpumask *mask,
> diff --git a/arch/x86/xen/smp_pv.c b/arch/x86/xen/smp_pv.c
> index a92e8002b5cf..d5ae5de2daa2 100644



> diff --git a/arch/x86/xen/xen-ops.h b/arch/x86/xen/xen-ops.h
> index 6d7f6318fc07..0f71ee3fe86b 100644
> --- a/arch/x86/xen/xen-ops.h
> +++ b/arch/x86/xen/xen-ops.h
> @@ -160,4 +160,18 @@ void xen_hvm_post_suspend(int suspend_cancelled);
>   static inline void xen_hvm_post_suspend(int suspend_cancelled) {}
>   #endif
>   
> +void xen_force_evtchn_callback(void);

These ...

> +pteval_t xen_pte_val(pte_t pte);
> +pgdval_t xen_pgd_val(pgd_t pgd);
> +pte_t xen_make_pte(pteval_t pte);
> +pgd_t xen_make_pgd(pgdval_t pgd);
> +pmdval_t xen_pmd_val(pmd_t pmd);
> +pmd_t xen_make_pmd(pmdval_t pmd);
> +pudval_t xen_pud_val(pud_t pud);
> +pud_t xen_make_pud(pudval_t pud);
> +p4dval_t xen_p4d_val(p4d_t p4d);
> +p4d_t xen_make_p4d(p4dval_t p4d);
> +pte_t xen_make_pte_init(pteval_t pte);
> +void xen_start_kernel(struct start_info *si);


... should go under '#ifdef CONFIG_XEN_PV'



-boris