use the macro LOWEST_BIT where appropriate

[XEN PATCH][for-4.19 1/2] xen/vmap: use LOWEST_BIT to wrap a violation of Rule 10.1

Posted by Nicola Vetrini 2 years, 3 months ago

No functional change.

Signed-off-by: Nicola Vetrini <nicola.vetrini@bugseng.com>
---
 xen/common/vmap.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/xen/common/vmap.c b/xen/common/vmap.c
index 4fd6b3067ec1..34e99d780c03 100644
--- a/xen/common/vmap.c
+++ b/xen/common/vmap.c
@@ -53,7 +53,7 @@ static void *vm_alloc(unsigned int nr, unsigned int align,
     if ( !align )
         align = 1;
     else if ( align & (align - 1) )
-        align &= -align;
+        align = LOWEST_BIT(align);
 
     ASSERT((t >= VMAP_DEFAULT) && (t < VMAP_REGION_NR));
     if ( !vm_base[t] )
-- 
2.34.1

Re: [XEN PATCH][for-4.19 1/2] xen/vmap: use LOWEST_BIT to wrap a violation of Rule 10.1

Posted by Stefano Stabellini 2 years, 3 months ago

On Thu, 12 Oct 2023, Nicola Vetrini wrote:
> No functional change.
> 
> Signed-off-by: Nicola Vetrini <nicola.vetrini@bugseng.com>

Reviewed-by: Stefano Stabellini <sstabellini@kernel.org>

[XEN PATCH][for-4.19 1/2] xen/vmap: use LOWEST_BIT to wrap a violation of Rule 10.1
[XEN PATCH][for-4.19 2/2] xen/iommu: use LOWEST_BIT to wrap a violation of Rule 10.1