[PATCH 1/2] x86/vpci: fix off-by-one

[Roger Pau Monne]

rangeset_remove_range() uses inclusive ranges, and hence the end of the
range should be calculated using PFN_DOWN(), not PFN_UP().

Fixes: 4acab25a9300 ('x86/vpci: fix handling of BAR overlaps with non-hole 
regions')
Signed-off-by: Roger Pau Monné <roger....@citrix.com>
---
 xen/arch/x86/pci.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/xen/arch/x86/pci.c b/xen/arch/x86/pci.c
index afaf9fe1c053..26bb7f6a3c3a 100644
--- a/xen/arch/x86/pci.c
+++ b/xen/arch/x86/pci.c
@@ -131,7 +131,7 @@ int pci_sanitize_bar_memory(struct rangeset *r)
             continue;
 
         rc = rangeset_remove_range(r, PFN_DOWN(entry->addr),
-                                   PFN_UP(entry->addr + entry->size - 1));
+                                   PFN_DOWN(entry->addr + entry->size - 1));
         if ( rc )
             return rc;
     }
-- 
2.49.0