efi_loader: notify memory map changes

When the memory map is changed signal events of the
EFI_EVENT_GROUP_MEMORY_MAP_CHANGE event group.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>

diff --git a/lib/efi_loader/efi_memory.c b/lib/efi_loader/efi_memory.c
index 76dcaa48f494dbf95c3ea09a33da520238166b4c..386cf924fe26a3c457c60878de55d5dfcb60e544 100644 (file)
--- a/lib/efi_loader/efi_memory.c
+++ b/lib/efi_loader/efi_memory.c
@@ -230,6 +230,7 @@ uint64_t efi_add_memory_map(uint64_t start, uint64_t pages, int memory_type,
        struct efi_mem_list *newlist;
        bool carve_again;
        uint64_t carved_pages = 0;
+       struct efi_event *evt;
 
        EFI_PRINT("%s: 0x%llx 0x%llx %d %s\n", __func__,
                  start, pages, memory_type, overlap_only_ram ? "yes" : "no");
@@ -315,6 +316,16 @@ uint64_t efi_add_memory_map(uint64_t start, uint64_t pages, int memory_type,
        /* And make sure memory is listed in descending order */
        efi_mem_sort();
 
+       /* Notify that the memory map was changed */
+       list_for_each_entry(evt, &efi_events, link) {
+               if (evt->group &&
+                   !guidcmp(evt->group,
+                            &efi_guid_event_group_memory_map_change)) {
+                       efi_signal_event(evt, false);
+                       break;
+               }
+       }
+
        return start;
 }