We're hitting an assert when we pass in alignment == 0 since that's not
a power of two. so pass in the ideal page size.

Signed-off-by: Warner Losh <i...@bsdimp.com>
---
 bsd-user/mmap.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/bsd-user/mmap.c b/bsd-user/mmap.c
index 74ed00b9fe3..b62a69bd075 100644
--- a/bsd-user/mmap.c
+++ b/bsd-user/mmap.c
@@ -260,7 +260,8 @@ static abi_ulong mmap_find_vma_aligned(abi_ulong start, 
abi_ulong size,
 
     if (reserved_va) {
         return mmap_find_vma_reserved(start, size,
-            (alignment != 0 ? 1 << alignment : 0));
+            (alignment != 0 ? 1 << alignment :
+             MAX(qemu_host_page_size, TARGET_PAGE_SIZE)));
     }
 
     addr = start;
-- 
2.40.0


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