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-rw-r--r--linux-user/elfload.c6
1 files changed, 5 insertions, 1 deletions
diff --git a/linux-user/elfload.c b/linux-user/elfload.c
index ce902dbd56..3e3dc02499 100644
--- a/linux-user/elfload.c
+++ b/linux-user/elfload.c
@@ -398,7 +398,8 @@ enum {
static bool init_guest_commpage(void)
{
- void *want = g2h_untagged(HI_COMMPAGE & -qemu_host_page_size);
+ abi_ptr commpage = HI_COMMPAGE & -qemu_host_page_size;
+ void *want = g2h_untagged(commpage);
void *addr = mmap(want, qemu_host_page_size, PROT_READ | PROT_WRITE,
MAP_ANONYMOUS | MAP_PRIVATE | MAP_FIXED, -1, 0);
@@ -417,6 +418,9 @@ static bool init_guest_commpage(void)
perror("Protecting guest commpage");
exit(EXIT_FAILURE);
}
+
+ page_set_flags(commpage, commpage + qemu_host_page_size,
+ PAGE_READ | PAGE_EXEC | PAGE_VALID);
return true;
}