[RFC PATCH v1 06/26] E820: extend the table access interface

[Adalbert Lazăr]

This new function is necessary for the VM introspection object.
By sending all e820 entries, not just the RAM ones,
the introspection tool can differentiate between
an invalid address and a reserved one.

CC: Paolo Bonzini <pbonz...@redhat.com>
CC: Richard Henderson <r...@twiddle.net>
CC: Eduardo Habkost <ehabk...@redhat.com>
CC: "Michael S. Tsirkin" <m...@redhat.com>
CC: Marcel Apfelbaum <marcel.apfelb...@gmail.com>
Signed-off-by: Adalbert Lazăr <ala...@bitdefender.com>
---
 hw/i386/e820_memory_layout.c | 12 ++++++++++++
 hw/i386/e820_memory_layout.h |  2 ++
 2 files changed, 14 insertions(+)

diff --git a/hw/i386/e820_memory_layout.c b/hw/i386/e820_memory_layout.c
index bcf9eaf837..a875e9e326 100644
--- a/hw/i386/e820_memory_layout.c
+++ b/hw/i386/e820_memory_layout.c
@@ -57,3 +57,15 @@ bool e820_get_entry(int idx, uint32_t type, uint64_t 
*address, uint64_t *length)
     }
     return false;
 }
+
+bool e820_get_entry2(int idx, uint32_t *type, uint64_t *address,
+                     uint64_t *length)
+{
+    if (idx < e820_entries) {
+        *type = le32_to_cpu(e820_table[idx].type);
+        *address = le64_to_cpu(e820_table[idx].address);
+        *length = le64_to_cpu(e820_table[idx].length);
+        return true;
+    }
+    return false;
+}
diff --git a/hw/i386/e820_memory_layout.h b/hw/i386/e820_memory_layout.h
index 2a0ceb8b9c..a4555c21fb 100644
--- a/hw/i386/e820_memory_layout.h
+++ b/hw/i386/e820_memory_layout.h
@@ -36,6 +36,8 @@ int e820_add_entry(uint64_t address, uint64_t length, 
uint32_t type);
 int e820_get_num_entries(void);
 bool e820_get_entry(int index, uint32_t type,
                     uint64_t *address, uint64_t *length);
+bool e820_get_entry2(int index, uint32_t *type,
+                     uint64_t *address, uint64_t *length);