diff mbox series

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

Message ID 20200415005938.23895-7-alazar@bitdefender.com
State New
Headers show
Series VM introspection | expand

Commit Message

Adalbert Lazăr April 15, 2020, 12:59 a.m. UTC 
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 <pbonzini@redhat.com>
CC: Richard Henderson <rth@twiddle.net>
CC: Eduardo Habkost <ehabkost@redhat.com>
CC: "Michael S. Tsirkin" <mst@redhat.com>
CC: Marcel Apfelbaum <marcel.apfelbaum@gmail.com>
Signed-off-by: Adalbert Lazăr <alazar@bitdefender.com>
---
 hw/i386/e820_memory_layout.c | 12 ++++++++++++
 hw/i386/e820_memory_layout.h |  2 ++
 2 files changed, 14 insertions(+)
diff mbox series

Patch

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);