[xen staging] VT-d: drop ROOT_ENTRY_NR

[patchbot@xxxxxxx]

commit d94a9973794c2fb8c754be0cdd9ffe0edf1b0a8b
Author:     Jan Beulich <jbeulich@xxxxxxxx>
AuthorDate: Wed Apr 20 10:53:19 2022 +0200
Commit:     Jan Beulich <jbeulich@xxxxxxxx>
CommitDate: Wed Apr 20 10:53:19 2022 +0200

    VT-d: drop ROOT_ENTRY_NR
    
    It's not only misplaced, but entirely unused.
    
    Signed-off-by: Jan Beulich <jbeulich@xxxxxxxx>
    Reviewed-by: Roger Pau Monné <roger.pau@xxxxxxxxxx>
    Reviewed-by: Kevin Tian <kevin.tian@xxxxxxxxx>
---
 xen/drivers/passthrough/vtd/iommu.h | 1 -
 1 file changed, 1 deletion(-)

diff --git a/xen/drivers/passthrough/vtd/iommu.h 
b/xen/drivers/passthrough/vtd/iommu.h
index aca055f577..09ec09fe27 100644
--- a/xen/drivers/passthrough/vtd/iommu.h
+++ b/xen/drivers/passthrough/vtd/iommu.h
@@ -204,7 +204,6 @@ struct context_entry {
         __uint128_t full;
     };
 };
-#define ROOT_ENTRY_NR (PAGE_SIZE_4K/sizeof(struct root_entry))
 #define context_present(c) ((c).lo & 1)
 #define context_fault_disable(c) (((c).lo >> 1) & 1)
 #define context_translation_type(c) (((c).lo >> 2) & 3)
--
generated by git-patchbot for /home/xen/git/xen.git#staging