[Xen-devel] [for-4.11][PATCH v6 06/16] xen/x86: Remove unused override of page_to_mfn/mfn_to_page

[Julien Grall <julien.grall@xxxxxxx>]

A few files override page_to_mfn/mfn_to_page but actually never use
those macros. So drop them.

Signed-off-by: Julien Grall <julien.grall@xxxxxxx>
Acked-by: George Dunlap <george.dunlap@xxxxxxxxxx>
Acked-by: Jan Beulich <jbeulich@xxxxxxxx>

---
Cc: George Dunlap <george.dunlap@xxxxxxxxxxxxx>
Cc: Jan Beulich <jbeulich@xxxxxxxx>
Cc: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>

    Changes in v5:
        - Add George and Jan's acked-by

    Changes in v4:
        - Patch added
---
 xen/arch/x86/mm/hap/nested_hap.c | 3 ---
 xen/arch/x86/mm/p2m-pt.c         | 6 ------
 xen/arch/x86/pv/iret.c           | 6 ------
 xen/arch/x86/pv/mm.c             | 6 ------
 xen/arch/x86/pv/traps.c          | 6 ------
 5 files changed, 27 deletions(-)

diff --git a/xen/arch/x86/mm/hap/nested_hap.c b/xen/arch/x86/mm/hap/nested_hap.c
index 4603ceced4..d2a07a5c79 100644
--- a/xen/arch/x86/mm/hap/nested_hap.c
+++ b/xen/arch/x86/mm/hap/nested_hap.c
@@ -70,9 +70,6 @@
 /********************************************/
 /*        NESTED VIRT P2M FUNCTIONS         */
 /********************************************/
-/* Override macros from asm/page.h to make them work with mfn_t */
-#undef page_to_mfn
-#define page_to_mfn(_pg) _mfn(__page_to_mfn(_pg))
 
 void
 nestedp2m_write_p2m_entry(struct p2m_domain *p2m, unsigned long gfn,
diff --git a/xen/arch/x86/mm/p2m-pt.c b/xen/arch/x86/mm/p2m-pt.c
index 753124bdcd..b8c5d2ed26 100644
--- a/xen/arch/x86/mm/p2m-pt.c
+++ b/xen/arch/x86/mm/p2m-pt.c
@@ -39,12 +39,6 @@
 
 #include "mm-locks.h"
 
-/* Override macros from asm/page.h to make them work with mfn_t */
-#undef mfn_to_page
-#define mfn_to_page(_m) __mfn_to_page(mfn_x(_m))
-#undef page_to_mfn
-#define page_to_mfn(_pg) _mfn(__page_to_mfn(_pg))
-
 /*
  * We may store INVALID_MFN in PTEs.  We need to clip this to avoid trampling
  * over higher-order bits (NX, p2m type, IOMMU flags).  We seem to not need
diff --git a/xen/arch/x86/pv/iret.c b/xen/arch/x86/pv/iret.c
index 56aeac360a..ca433a69c4 100644
--- a/xen/arch/x86/pv/iret.c
+++ b/xen/arch/x86/pv/iret.c
@@ -24,12 +24,6 @@
 #include <asm/current.h>
 #include <asm/traps.h>
 
-/* Override macros from asm/page.h to make them work with mfn_t */
-#undef mfn_to_page
-#define mfn_to_page(mfn) __mfn_to_page(mfn_x(mfn))
-#undef page_to_mfn
-#define page_to_mfn(pg) _mfn(__page_to_mfn(pg))
-
 unsigned long do_iret(void)
 {
     struct cpu_user_regs *regs = guest_cpu_user_regs();
diff --git a/xen/arch/x86/pv/mm.c b/xen/arch/x86/pv/mm.c
index 8d7a4fd85f..b46fd94c2c 100644
--- a/xen/arch/x86/pv/mm.c
+++ b/xen/arch/x86/pv/mm.c
@@ -26,12 +26,6 @@
 
 #include "mm.h"
 
-/* Override macros from asm/page.h to make them work with mfn_t */
-#undef mfn_to_page
-#define mfn_to_page(mfn) __mfn_to_page(mfn_x(mfn))
-#undef page_to_mfn
-#define page_to_mfn(pg) _mfn(__page_to_mfn(pg))
-
 /*
  * Get a mapping of a PV guest's l1e for this linear address.  The return
  * pointer should be unmapped using unmap_domain_page().
diff --git a/xen/arch/x86/pv/traps.c b/xen/arch/x86/pv/traps.c
index 98549bc1ea..f48db92243 100644
--- a/xen/arch/x86/pv/traps.c
+++ b/xen/arch/x86/pv/traps.c
@@ -29,12 +29,6 @@
 #include <asm/shared.h>
 #include <asm/traps.h>
 
-/* Override macros from asm/page.h to make them work with mfn_t */
-#undef mfn_to_page
-#define mfn_to_page(mfn) __mfn_to_page(mfn_x(mfn))
-#undef page_to_mfn
-#define page_to_mfn(pg) _mfn(__page_to_mfn(pg))
-
 void do_entry_int82(struct cpu_user_regs *regs)
 {
     if ( unlikely(untrusted_msi) )
-- 
2.11.0


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