[Xen-devel] [PATCH MM-PART2 v2 14/19] xen/arm32: mm: Avoid cleaning the cache for secondary CPUs page-tables

[Julien Grall <julien.grall@xxxxxxx>]

The page-table walker is configured to use the same shareability and
cacheability as the access performed when updating the page-tables. This
means cleaning the cache for secondary CPUs runtime page-tables is
unnecessary.

Signed-off-by: Julien Grall <julien.grall@xxxxxxx>
Reviewed-by: Andrii Anisov <andrii_anisov@xxxxxxxx>

---
    Changes in v2:
        - Add Andrii's reviewed-by
---
 xen/arch/arm/mm.c | 3 ---
 1 file changed, 3 deletions(-)

diff --git a/xen/arch/arm/mm.c b/xen/arch/arm/mm.c
index cda2847d00..6db7dda0da 100644
--- a/xen/arch/arm/mm.c
+++ b/xen/arch/arm/mm.c
@@ -769,9 +769,6 @@ int init_secondary_pagetables(int cpu)
         write_pte(&first[first_table_offset(DOMHEAP_VIRT_START+i*FIRST_SIZE)], 
pte);
     }
 
-    clean_dcache_va_range(first, PAGE_SIZE);
-    clean_dcache_va_range(domheap, DOMHEAP_SECOND_PAGES*PAGE_SIZE);
-
     per_cpu(xen_pgtable, cpu) = first;
     per_cpu(xen_dommap, cpu) = domheap;
 
-- 
2.11.0


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