struct domain is always a page aligned allocation. Update it's type to
reflect this, so we can safely reuse the lower bits in the pointer for
auxiliary information.
No functional change.
Signed-off-by: Andrew Cooper <andrew.coop...@citrix.com>
---
CC: Anthony PERARD <anthony.per...@vates.tech>
CC: Michal Orzel <michal.or...@amd.com>
CC: Jan Beulich <jbeul...@suse.com>
CC: Julien Grall <jul...@xen.org>
CC: Roger Pau Monné <roger....@citrix.com>
CC: Stefano Stabellini <sstabell...@kernel.org>
CC: Dario Faggioli <dfaggi...@suse.com>
CC: Juergen Gross <jgr...@suse.com>
CC: George Dunlap <g...@xenproject.org>
v2:
* New
Interestingly this does cause two changes in the resulting binary, both caused
by GCC electing to use a more complicated addressing mode to save one ADD
instruction.
---
xen/include/xen/sched.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/xen/include/xen/sched.h b/xen/include/xen/sched.h
index 037c83fda219..8412b45178ca 100644
--- a/xen/include/xen/sched.h
+++ b/xen/include/xen/sched.h
@@ -645,7 +645,7 @@ struct domain
unsigned int num_llc_colors;
const unsigned int *llc_colors;
#endif
-};
+} __aligned(PAGE_SIZE);
static inline struct page_list_head *page_to_list(
struct domain *d, const struct page_info *pg)
--
2.39.5
