plat: don't give up on hugetlb fail

some free memory might appear over time

diff --git a/linux/plat.c b/linux/plat.c
index 1f2c9f2..04ebd12 100644 (file)
--- a/linux/plat.c
+++ b/linux/plat.c
@@ -137,7 +137,7 @@ int plat_wait_event(int *fds_hnds, int count, int timeout_ms)
 
 void *plat_mmap(unsigned long addr, size_t size, int need_exec, int is_fixed)
 {
-       static int hugetlb_disabled;
+       static int hugetlb_warned;
        int prot = PROT_READ | PROT_WRITE;
        int flags = MAP_PRIVATE | MAP_ANONYMOUS;
        void *req, *ret;
@@ -147,15 +147,17 @@ void *plat_mmap(unsigned long addr, size_t size, int need_exec, int is_fixed)
                prot |= PROT_EXEC;
        if (is_fixed)
                flags |= MAP_FIXED;
-       if (size >= HUGETLB_THRESHOLD && !hugetlb_disabled)
+       if (size >= HUGETLB_THRESHOLD)
                flags |= MAP_HUGETLB;
 
        ret = mmap(req, size, prot, flags, -1, 0);
        if (ret == MAP_FAILED && (flags & MAP_HUGETLB)) {
-               fprintf(stderr,
-                       "warning: failed to do hugetlb mmap (%p, %zu): %d\n",
-                       req, size, errno);
-               hugetlb_disabled = 1;
+               if (!hugetlb_warned) {
+                       fprintf(stderr,
+                               "warning: failed to do hugetlb mmap (%p, %zu): %d\n",
+                               req, size, errno);
+                       hugetlb_warned = 1;
+               }
                flags &= ~MAP_HUGETLB;
                ret = mmap(req, size, prot, flags, -1, 0);
        }