[Xen-devel] [PATCH v4 07/21] acpi/hvmloader: Build WAET optionally

[Boris Ostrovsky <boris.ostrovsky@xxxxxxxxxx>]

Signed-off-by: Boris Ostrovsky <boris.ostrovsky@xxxxxxxxxx>
Reviewed-by: Jan Beulich <jbeulich@xxxxxxxx>
---
 tools/firmware/hvmloader/acpi/build.c   | 10 +++++++---
 tools/firmware/hvmloader/acpi/libacpi.h |  1 +
 tools/firmware/hvmloader/util.c         |  2 +-
 3 files changed, 9 insertions(+), 4 deletions(-)

diff --git a/tools/firmware/hvmloader/acpi/build.c 
b/tools/firmware/hvmloader/acpi/build.c
index dc489bb..537933b 100644
--- a/tools/firmware/hvmloader/acpi/build.c
+++ b/tools/firmware/hvmloader/acpi/build.c
@@ -360,9 +360,13 @@ 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_HAS_WAET )
+    {
+        waet = construct_waet();
+        if ( !waet )
+            return -1;
+        table_ptrs[nr_tables++] = (unsigned long)waet;
+    }
 
     if ( config->table_flags & ACPI_HAS_SSDT_PM )
     {
diff --git a/tools/firmware/hvmloader/acpi/libacpi.h 
b/tools/firmware/hvmloader/acpi/libacpi.h
index b8f28a3..b411a6e 100644
--- a/tools/firmware/hvmloader/acpi/libacpi.h
+++ b/tools/firmware/hvmloader/acpi/libacpi.h
@@ -29,6 +29,7 @@
 #define ACPI_HAS_SSDT_S4     (1<<6)
 #define ACPI_HAS_TCPA        (1<<7)
 #define ACPI_HAS_IOAPIC      (1<<8)
+#define ACPI_HAS_WAET        (1<<9)
 
 struct xen_vmemrange;
 struct acpi_numa {
diff --git a/tools/firmware/hvmloader/util.c b/tools/firmware/hvmloader/util.c
index aa5fc20..b345576 100644
--- a/tools/firmware/hvmloader/util.c
+++ b/tools/firmware/hvmloader/util.c
@@ -919,7 +919,7 @@ void hvmloader_acpi_build_tables(struct acpi_config *config,
     if ( !strncmp(xenstore_read("platform/acpi_s4", "1"), "1", 1)  )
         config->table_flags |= ACPI_HAS_SSDT_S4;
 
-    config->table_flags |= (ACPI_HAS_TCPA | ACPI_HAS_IOAPIC);
+    config->table_flags |= (ACPI_HAS_TCPA | ACPI_HAS_IOAPIC | ACPI_HAS_WAET);
 
     config->tis_hdr = (uint16_t *)ACPI_TIS_HDR_ADDRESS;
 
-- 
1.8.3.1


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