From d8d69c2c94d0314e546f91bae8f19826aedf1e14 Mon Sep 17 00:00:00 2001
From: daan <daan@microsoft.com>
Date: Sun, 5 Jan 2020 22:07:16 -0800
Subject: [PATCH] disable MAP_NORESERVE on huge pages

---
 src/os.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/os.c b/src/os.c
index d7126e70..c9a04d27 100644
--- a/src/os.c
+++ b/src/os.c
@@ -331,7 +331,7 @@ static void* mi_unix_mmap(void* addr, size_t size, size_t try_alignment, int pro
       mi_atomic_cas_weak(&large_page_try_ok, try_ok - 1, try_ok);
     }
     else {
-      int lflags = flags;
+      int lflags = flags & ~MAP_NORESERVE;  // using NORESERVE on huge pages seems to fail on Linux
       int lfd = fd;
       #ifdef MAP_ALIGNED_SUPER
       lflags |= MAP_ALIGNED_SUPER;