In some code paths we check whether host virtual addresses are sane. That only works if at least alignments between host and U-Boot address spaces match.
So let's always map U-Boot addresses with 64kb alignment. That should be enough to ensure that the actual RAM ends up in a different page from the header on all architectures.
Signed-off-by: Alexander Graf agraf@suse.de --- arch/sandbox/cpu/os.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/arch/sandbox/cpu/os.c b/arch/sandbox/cpu/os.c index 9fa79a8843..4dc6483922 100644 --- a/arch/sandbox/cpu/os.c +++ b/arch/sandbox/cpu/os.c @@ -143,14 +143,15 @@ void os_tty_raw(int fd, bool allow_sigs) void *os_malloc(size_t length) { struct os_mem_hdr *hdr; + size_t alloc_length = length + (64 * 1024);
- hdr = mmap(NULL, length + sizeof(*hdr), PROT_READ | PROT_WRITE, + hdr = mmap(NULL, alloc_length, PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_ANONYMOUS, -1, 0); if (hdr == MAP_FAILED) return NULL; hdr->length = length;
- return hdr + 1; + return (void*)hdr + (64 * 1024); }
void os_free(void *ptr)