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[PULL,07/10] bsd-user: Specify host page alignment if none specified

Message ID 20230731210211.137353-8-richard.henderson@linaro.org
State Accepted
Commit 0f2f3247d456e08baa345768824dae6864d9acb6
Headers show
Series [PULL,01/10] util/interval-tree: Use qatomic_read for left/right while searching | expand

Commit Message

Richard Henderson July 31, 2023, 9:02 p.m. UTC 
From: Warner Losh <imp@bsdimp.com>

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 <imp@bsdimp.com>
Message-Id: <20230728162927.5009-1-imp@bsdimp.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
---
 bsd-user/mmap.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)
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Patch

diff --git a/bsd-user/mmap.c b/bsd-user/mmap.c
index 74ed00b9fe..b62a69bd07 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;