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[PATCH 1/2] x86/mm: address Misra C:2012 rule 16.2
- To: "xen-devel@xxxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxxx>
- From: Jan Beulich <jbeulich@xxxxxxxx>
- Date: Wed, 13 May 2026 16:05:55 +0200
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- Cc: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>, Roger Pau Monné <roger.pau@xxxxxxxxxx>, Teddy Astie <teddy.astie@xxxxxxxxxx>
- Delivery-date: Wed, 13 May 2026 14:06:05 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
... ("A switch label shall only be used when the most closely-enclosing
compound statement is the body of a `switch' statement"). Use a form of
fall-through instead. No difference in generated code, except for some
line number changes.
Signed-off-by: Jan Beulich <jbeulich@xxxxxxxx>
--- a/xen/arch/x86/mm.c
+++ b/xen/arch/x86/mm.c
@@ -2663,15 +2663,17 @@ static int validate_page(struct page_inf
get_gpfn_from_mfn(mfn_x(page_to_mfn(page))),
type, page->count_info, page->u.inuse.type_info);
if ( page != current->arch.old_guest_table )
- page->u.inuse.type_info = 0;
- else
{
- ASSERT((page->u.inuse.type_info &
- (PGT_count_mask | PGT_validated)) == 1);
- case -ERESTART:
- get_page_light(page);
- page->u.inuse.type_info |= PGT_partial;
+ page->u.inuse.type_info = 0;
+ break;
}
+
+ ASSERT((page->u.inuse.type_info &
+ (PGT_count_mask | PGT_validated)) == 1);
+ fallthrough;
+ case -ERESTART:
+ get_page_light(page);
+ page->u.inuse.type_info |= PGT_partial;
break;
}
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