diff mbox

[030/108] acpi: fix tables for no-hpet configuration

Message ID 1407357598-21541-31-git-send-email-mdroth@linux.vnet.ibm.com
State New
Headers show

Commit Message

Michael Roth Aug. 6, 2014, 8:38 p.m. UTC 
From: "Michael S. Tsirkin" <mst@redhat.com>

acpi build tried to add offset of hpet table to rsdt even when hpet was
disabled.  If no tables follow hpet, this could lead to a malformed
rsdt.

Fix it up.

To avoid such errors in the future, rearrange code slightly to make it
clear that acpi_add_table stores the offset of the following table - not
of the previous one.

Reported-by: TeLeMan <geleman@gmail.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Cc: qemu-stable@nongnu.org
(cherry picked from commit 9ac1c4c07e7e6ab16a3e2149e9b32c0d092cb3f5)
Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>
---
 hw/i386/acpi-build.c | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)
diff mbox

Patch

diff --git a/hw/i386/acpi-build.c b/hw/i386/acpi-build.c
index c98df88..985a188 100644
--- a/hw/i386/acpi-build.c
+++ b/hw/i386/acpi-build.c
@@ -1410,15 +1410,16 @@  void acpi_build(PcGuestInfo *guest_info, AcpiBuildTables *tables)
     /* ACPI tables pointed to by RSDT */
     acpi_add_table(table_offsets, tables->table_data);
     build_fadt(tables->table_data, tables->linker, &pm, facs, dsdt);
-    acpi_add_table(table_offsets, tables->table_data);
 
+    acpi_add_table(table_offsets, tables->table_data);
     build_ssdt(tables->table_data, tables->linker, &cpu, &pm, &misc, &pci,
                guest_info);
-    acpi_add_table(table_offsets, tables->table_data);
 
-    build_madt(tables->table_data, tables->linker, &cpu, guest_info);
     acpi_add_table(table_offsets, tables->table_data);
+    build_madt(tables->table_data, tables->linker, &cpu, guest_info);
+
     if (misc.has_hpet) {
+        acpi_add_table(table_offsets, tables->table_data);
         build_hpet(tables->table_data, tables->linker);
     }
     if (guest_info->numa_nodes) {