diff mbox

[Xen-devel,for-4.8,v2,09/23] xen/arm: p2m: Change the type of level_shifts from paddr_t to uint8_t

Message ID 1473938919-31976-10-git-send-email-julien.grall@arm.com
State New
Headers show

Commit Message

Julien Grall Sept. 15, 2016, 11:28 a.m. UTC 
The level shift can be encoded with 8-bit. So it is not necessary to
use paddr_t (i.e 64-bit).

Signed-off-by: Julien Grall <julien.grall@arm.com>

---
    Changes in v2:
        - Use uint8_t rather than unsigned int
        - Replaced paddr_t by uint8_t in p2m_shatter_page
---
 xen/arch/arm/p2m.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)
diff mbox

Patch

diff --git a/xen/arch/arm/p2m.c b/xen/arch/arm/p2m.c
index b53d4cf..b4f75e8 100644
--- a/xen/arch/arm/p2m.c
+++ b/xen/arch/arm/p2m.c
@@ -687,14 +687,14 @@  static const paddr_t level_sizes[] =
     { ZEROETH_SIZE, FIRST_SIZE, SECOND_SIZE, THIRD_SIZE };
 static const paddr_t level_masks[] =
     { ZEROETH_MASK, FIRST_MASK, SECOND_MASK, THIRD_MASK };
-static const paddr_t level_shifts[] =
+static const uint8_t level_shifts[] =
     { ZEROETH_SHIFT, FIRST_SHIFT, SECOND_SHIFT, THIRD_SHIFT };
 
 static int p2m_shatter_page(struct p2m_domain *p2m,
                             lpae_t *entry,
                             unsigned int level)
 {
-    const paddr_t level_shift = level_shifts[level];
+    const uint8_t level_shift = level_shifts[level];
     int rc = p2m_create_table(p2m, entry, level_shift - PAGE_SHIFT);
 
     if ( !rc )