[Qemu-devel] [PATCH 2/5] xen: replace ffsl with ctzl

[Natanael Copa]

ffsl is a GNU extension and not available in musl libc.

See also commit fbeadf50 (bitops: unify bitops_ffsl with the one in
host-utils.h, call it bitops_ctzl) on why ctzl should be used instead
of ffsl.

Signed-off-by: Natanael Copa <address@hidden>
---
 xen-all.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/xen-all.c b/xen-all.c
index ba34739..3a0e9e5 100644
--- a/xen-all.c
+++ b/xen-all.c
@@ -511,7 +511,7 @@ static void xen_sync_dirty_bitmap(XenIOState *state,
     for (i = 0; i < ARRAY_SIZE(bitmap); i++) {
         unsigned long map = bitmap[i];
         while (map != 0) {
-            j = ffsl(map) - 1;
+            j = ctzl(map);
             map &= ~(1ul << j);
             memory_region_set_dirty(framebuffer,
                                     (i * width + j) * TARGET_PAGE_SIZE,
-- 
1.9.2