hw/xen/hvm: Propagate page_mask to a pair of functions

We are going to replace TARGET_PAGE_MASK by a
runtime variable. In order to reduce code duplication,
propagate TARGET_PAGE_MASK to get_physmapping() and
xen_phys_offset_to_gaddr().

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Manos Pitsidianakis <manos.pitsidianakis@linaro.org>
Message-Id: <20231114163123.74888-3-philmd@linaro.org>

1 files changed, 10 insertions, 8 deletions

diff --git a/hw/i386/xen/xen-hvm.c b/hw/i386/xen/xen-hvm.c
index 8235782..844b11a 100644
--- a/hw/i386/xen/xen-hvm.c
+++ b/hw/i386/xen/xen-hvm.c
@@ -174,11 +174,12 @@ static void xen_ram_init(PCMachineState *pcms,
     }
 }
 
-static XenPhysmap *get_physmapping(hwaddr start_addr, ram_addr_t size)
+static XenPhysmap *get_physmapping(hwaddr start_addr, ram_addr_t size,
+                                   int page_mask)
 {
     XenPhysmap *physmap = NULL;
 
-    start_addr &= TARGET_PAGE_MASK;
+    start_addr &= page_mask;
 
     QLIST_FOREACH(physmap, &xen_physmap, list) {
         if (range_covers_byte(physmap->start_addr, physmap->size, start_addr)) {
@@ -188,9 +189,10 @@ static XenPhysmap *get_physmapping(hwaddr start_addr, ram_addr_t size)
     return NULL;
 }
 
-static hwaddr xen_phys_offset_to_gaddr(hwaddr phys_offset, ram_addr_t size)
+static hwaddr xen_phys_offset_to_gaddr(hwaddr phys_offset, ram_addr_t size,
+                                       int page_mask)
 {
-    hwaddr addr = phys_offset & TARGET_PAGE_MASK;
+    hwaddr addr = phys_offset & page_mask;
     XenPhysmap *physmap = NULL;
 
     QLIST_FOREACH(physmap, &xen_physmap, list) {
@@ -252,7 +254,7 @@ static int xen_add_to_physmap(XenIOState *state,
     hwaddr phys_offset = memory_region_get_ram_addr(mr);
     const char *mr_name;
 
-    if (get_physmapping(start_addr, size)) {
+    if (get_physmapping(start_addr, size, TARGET_PAGE_MASK)) {
         return 0;
     }
     if (size <= 0) {
@@ -325,7 +327,7 @@ static int xen_remove_from_physmap(XenIOState *state,
     XenPhysmap *physmap = NULL;
     hwaddr phys_offset = 0;
 
-    physmap = get_physmapping(start_addr, size);
+    physmap = get_physmapping(start_addr, size, TARGET_PAGE_MASK);
     if (physmap == NULL) {
         return -1;
     }
@@ -373,7 +375,7 @@ static void xen_sync_dirty_bitmap(XenIOState *state,
     int rc, i, j;
     const XenPhysmap *physmap = NULL;
 
-    physmap = get_physmapping(start_addr, size);
+    physmap = get_physmapping(start_addr, size, TARGET_PAGE_MASK);
     if (physmap == NULL) {
         /* not handled */
         return;
@@ -633,7 +635,7 @@ void xen_hvm_modified_memory(ram_addr_t start, ram_addr_t length)
         int rc;
         ram_addr_t start_pfn, nb_pages;
 
-        start = xen_phys_offset_to_gaddr(start, length);
+        start = xen_phys_offset_to_gaddr(start, length, TARGET_PAGE_MASK);
 
         if (length == 0) {
             length = TARGET_PAGE_SIZE;