[PATCH RFC 09/20] acpi/hvmloader: Build WAET optionally

[Boris Ostrovsky <boris.ostrovsky@oracle.com>]

Signed-off-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>
---
 tools/firmware/hvmloader/acpi/acpi2_0.h | 1 +
 tools/firmware/hvmloader/acpi/build.c   | 9 ++++++---
 tools/firmware/hvmloader/util.c         | 3 ++-
 3 files changed, 9 insertions(+), 4 deletions(-)

diff --git a/tools/firmware/hvmloader/acpi/acpi2_0.h b/tools/firmware/hvmloader/acpi/acpi2_0.h
index 6c762e0..cf707b8 100644
--- a/tools/firmware/hvmloader/acpi/acpi2_0.h
+++ b/tools/firmware/hvmloader/acpi/acpi2_0.h
@@ -460,6 +460,7 @@ struct acpi_20_slit {
 #define ACPI_BUILD_SSDT_S4        (1<<2)
 #define ACPI_BUILD_TCPA           (1<<3)
 #define ACPI_BUILD_IOAPIC         (1<<4)
+#define ACPI_BUILD_WAET           (1<<5)
 
 /*
  * Located at ACPI_INFO_PHYSICAL_ADDRESS.
diff --git a/tools/firmware/hvmloader/acpi/build.c b/tools/firmware/hvmloader/acpi/build.c
index 08cf78b..2bf89e4 100644
--- a/tools/firmware/hvmloader/acpi/build.c
+++ b/tools/firmware/hvmloader/acpi/build.c
@@ -344,9 +344,12 @@ static int construct_secondary_tables(unsigned long *table_ptrs,
     }
 
     /* WAET. */
-    waet = construct_waet();
-    if (!waet) return -1;
-    table_ptrs[nr_tables++] = (unsigned long)waet;
+    if ( config->table_flags & ACPI_BUILD_WAET )
+    {
+        waet = construct_waet();
+        if (!waet) return -1;
+        table_ptrs[nr_tables++] = (unsigned long)waet;
+    }
 
     if ( config->table_flags & ACPI_BUILD_SSDT_PM )
     {
diff --git a/tools/firmware/hvmloader/util.c b/tools/firmware/hvmloader/util.c
index 982d023..c2145f6 100644
--- a/tools/firmware/hvmloader/util.c
+++ b/tools/firmware/hvmloader/util.c
@@ -911,7 +911,8 @@ void hvmloader_acpi_build_tables(struct acpi_config *config,
     if ( !strncmp(xenstore_read("platform/acpi_s4", "1"), "1", 1)  )
         config->table_flags |= ACPI_BUILD_SSDT_S4;
 
-    config->table_flags |= (ACPI_BUILD_TCPA | ACPI_BUILD_IOAPIC);
+    config->table_flags |= (ACPI_BUILD_TCPA | ACPI_BUILD_IOAPIC |
+                            ACPI_BUILD_WAET);
 
     config->nr_vcpus = hvm_info->nr_vcpus;
     config->vcpu_online = hvm_info->vcpu_online;
-- 
2.4.3


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