Sorry ... manipulation error
On 11/16/21 13:26, Pierre Morel wrote:
The allocator allocate pages it follows the size must be rounded
to pages before the allocation.
Fixes: b0fe3988 "s390x: define UV compatible I/O allocation"
Signed-off-by: Pierre Morel <pmorel@xxxxxxxxxxxxx>
Reviewed-by: Claudio Imbrenda <imbrenda@xxxxxxxxxxxxx>
---
lib/s390x/malloc_io.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/lib/s390x/malloc_io.c b/lib/s390x/malloc_io.c
index 78582eac..080fc694 100644
--- a/lib/s390x/malloc_io.c
+++ b/lib/s390x/malloc_io.c
@@ -41,7 +41,7 @@ static void unshare_pages(void *p, int count)
void *alloc_io_mem(int size, int flags)
{
- int order = get_order(size >> PAGE_SHIFT);
+ int order = get_order(PAGE_ALIGN(size) >> PAGE_SHIFT);
void *p;
int n;
@@ -62,7 +62,7 @@ void *alloc_io_mem(int size, int flags)
void free_io_mem(void *p, int size)
{
- int order = get_order(size >> PAGE_SHIFT);
+ int order = get_order(PAGE_ALIGN(size) >> PAGE_SHIFT);
assert(IS_ALIGNED((uintptr_t)p, PAGE_SIZE));
--
Pierre Morel
IBM Lab Boeblingen
