[xen master] xen/iommu: use ISOLATE_LSB to wrap a violation of Rule 10.1

[patchbot@xxxxxxx]

commit 9b3476f13eade87f5335decc24d61304250a6d3c
Author:     Nicola Vetrini <nicola.vetrini@xxxxxxxxxxx>
AuthorDate: Fri Nov 24 09:03:16 2023 +0100
Commit:     Jan Beulich <jbeulich@xxxxxxxx>
CommitDate: Fri Nov 24 09:03:16 2023 +0100

    xen/iommu: use ISOLATE_LSB to wrap a violation of Rule 10.1
    
    No functional change.
    
    Signed-off-by: Nicola Vetrini <nicola.vetrini@xxxxxxxxxxx>
    Reviewed-by: Stefano Stabellini <sstabellini@xxxxxxxxxx>
    Acked-by: Jan Beulich <jbeulich@xxxxxxxx>
---
 xen/drivers/passthrough/iommu.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/xen/drivers/passthrough/iommu.c b/xen/drivers/passthrough/iommu.c
index f9a9f53dbd..996c31be12 100644
--- a/xen/drivers/passthrough/iommu.c
+++ b/xen/drivers/passthrough/iommu.c
@@ -560,7 +560,7 @@ int __init iommu_setup(void)
         rc = iommu_hardware_setup();
         if ( !rc )
             ops = iommu_get_ops();
-        if ( ops && (ops->page_sizes & -ops->page_sizes) != PAGE_SIZE )
+        if ( ops && (ISOLATE_LSB(ops->page_sizes)) != PAGE_SIZE )
         {
             printk(XENLOG_ERR "IOMMU: page size mask %lx unsupported\n",
                    ops->page_sizes);
--
generated by git-patchbot for /home/xen/git/xen.git#master