diff options
| -rw-r--r-- | linux-user/mmap.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/linux-user/mmap.c b/linux-user/mmap.c index 46c7eeb..f261563 100644 --- a/linux-user/mmap.c +++ b/linux-user/mmap.c @@ -76,8 +76,12 @@ static int validate_prot_to_pageflags(int *host_prot, int prot) * don't bother transforming guest bit to host bit. Any other * target-specific prot bits will not be understood by the host * and will need to be encoded into page_flags for qemu emulation. + * + * Pages that are executable by the guest will never be executed + * by the host, but the host will need to be able to read them. */ - *host_prot = prot & (PROT_READ | PROT_WRITE | PROT_EXEC); + *host_prot = (prot & (PROT_READ | PROT_WRITE)) + | (prot & PROT_EXEC ? PROT_READ : 0); return prot & ~valid ? 0 : page_flags; } |