Hi Penny,
On 07/06/2021 03:43, Penny Zheng wrote:
In order to differentiate pages of static memory, from those allocated from
heap, this patch introduces a new page flag PGC_reserved to tell.
I would prefer if this patch is folded in the patch first using it. This
will be easier to understand how this flag will be used.
Cheers,
Signed-off-by: Penny Zheng <penny.zh...@arm.com>
---
changes v2:
- remove unused reserved field in struct page_info
- remove unused helper page_get_reserved_owner and page_set_reserved_owner
---
xen/include/asm-arm/mm.h | 3 +++
1 file changed, 3 insertions(+)
diff --git a/xen/include/asm-arm/mm.h b/xen/include/asm-arm/mm.h
index 0b7de3102e..7034fae1b6 100644
--- a/xen/include/asm-arm/mm.h
+++ b/xen/include/asm-arm/mm.h
@@ -108,6 +108,9 @@ struct page_info
/* Page is Xen heap? */
#define _PGC_xen_heap PG_shift(2)
#define PGC_xen_heap PG_mask(1, 2)
+ /* Page is reserved */
+#define _PGC_reserved PG_shift(3)
+#define PGC_reserved PG_mask(1, 3)
/* ... */
/* Page is broken? */
#define _PGC_broken PG_shift(7)
--
Julien Grall
