Add a declaration for the variable 'init_ttbr' to resolve
the violation of Rule 8.4 present in the associated source file 'mm.c'.

No functional changes.

Signed-off-by: Nicola Vetrini <nicola.vetrini@bugseng.com>
---
 xen/arch/arm/include/asm/mm.h | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/xen/arch/arm/include/asm/mm.h b/xen/arch/arm/include/asm/mm.h
index 5b530f0f40..698e54aff0 100644
--- a/xen/arch/arm/include/asm/mm.h
+++ b/xen/arch/arm/include/asm/mm.h
@@ -165,6 +165,9 @@ struct page_info
 #define _PGC_need_scrub   _PGC_allocated
 #define PGC_need_scrub    PGC_allocated
 
+/* Non-boot CPUs use this to find the correct pagetables. */
+extern uint64_t init_ttbr;
+
 extern mfn_t directmap_mfn_start, directmap_mfn_end;
 extern vaddr_t directmap_virt_end;
 #ifdef CONFIG_ARM_64
-- 
2.34.1

> On 9 Aug 2023, at 12:02, Nicola Vetrini <nicola.vetrini@bugseng.com> wrote:
> 
> Add a declaration for the variable 'init_ttbr' to resolve
> the violation of Rule 8.4 present in the associated source file 'mm.c'.
> 
> No functional changes.
> 
> Signed-off-by: Nicola Vetrini <nicola.vetrini@bugseng.com>
> ---

Reviewed-by: Luca Fancellu <luca.fancellu@arm.com>

With:

Fixes: 4557c2292854 ("xen: arm: rewrite start of day page table and cpu bring up")

If maintainers are ok

> xen/arch/arm/include/asm/mm.h | 3 +++
> 1 file changed, 3 insertions(+)
> 
> diff --git a/xen/arch/arm/include/asm/mm.h b/xen/arch/arm/include/asm/mm.h
> index 5b530f0f40..698e54aff0 100644
> --- a/xen/arch/arm/include/asm/mm.h
> +++ b/xen/arch/arm/include/asm/mm.h
> @@ -165,6 +165,9 @@ struct page_info
> #define _PGC_need_scrub   _PGC_allocated
> #define PGC_need_scrub    PGC_allocated
> 
> +/* Non-boot CPUs use this to find the correct pagetables. */
> +extern uint64_t init_ttbr;
> +
> extern mfn_t directmap_mfn_start, directmap_mfn_end;
> extern vaddr_t directmap_virt_end;
> #ifdef CONFIG_ARM_64
> -- 
> 2.34.1
> 
> 

On Wed, 9 Aug 2023, Luca Fancellu wrote:
> > On 9 Aug 2023, at 12:02, Nicola Vetrini <nicola.vetrini@bugseng.com> wrote:
> > 
> > Add a declaration for the variable 'init_ttbr' to resolve
> > the violation of Rule 8.4 present in the associated source file 'mm.c'.
> > 
> > No functional changes.
> > 
> > Signed-off-by: Nicola Vetrini <nicola.vetrini@bugseng.com>
> > ---
> 
> Reviewed-by: Luca Fancellu <luca.fancellu@arm.com>
> 
> With:
> 
> Fixes: 4557c2292854 ("xen: arm: rewrite start of day page table and cpu bring up")
> 
> If maintainers are ok

Yes

Reviewed-by: Stefano Stabellini <sstabellini@kernel.org>