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 <ag...@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)
--
2.12.3
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