[PULL 53/56] acpi: madt: skip pci override on pci-less systems.

["Michael S. Tsirkin" <mst@redhat.com>]

From: Gerd Hoffmann <kraxel@redhat.com>

Needed for microvm.

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Reviewed-by: Igor Mammedov <imammedo@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-Id: <20200520132003.9492-8-kraxel@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
---
 hw/i386/acpi-common.h |  3 ++-
 hw/i386/acpi-build.c  |  2 +-
 hw/i386/acpi-common.c | 26 +++++++++++++++-----------
 3 files changed, 18 insertions(+), 13 deletions(-)

diff --git a/hw/i386/acpi-common.h b/hw/i386/acpi-common.h
index c30e461f18..9cac18dddf 100644
--- a/hw/i386/acpi-common.h
+++ b/hw/i386/acpi-common.h
@@ -9,6 +9,7 @@
 #define ACPI_BUILD_IOAPIC_ID 0x0
 
 void acpi_build_madt(GArray *table_data, BIOSLinker *linker,
-                     X86MachineState *x86ms, AcpiDeviceIf *adev);
+                     X86MachineState *x86ms, AcpiDeviceIf *adev,
+                     bool has_pci);
 
 #endif
diff --git a/hw/i386/acpi-build.c b/hw/i386/acpi-build.c
index 26c0c8aefa..473cbdfffd 100644
--- a/hw/i386/acpi-build.c
+++ b/hw/i386/acpi-build.c
@@ -2588,7 +2588,7 @@ void acpi_build(AcpiBuildTables *tables, MachineState *machine)
 
     acpi_add_table(table_offsets, tables_blob);
     acpi_build_madt(tables_blob, tables->linker, x86ms,
-                    ACPI_DEVICE_IF(pcms->acpi_dev));
+                    ACPI_DEVICE_IF(pcms->acpi_dev), true);
 
     vmgenid_dev = find_vmgenid_dev();
     if (vmgenid_dev) {
diff --git a/hw/i386/acpi-common.c b/hw/i386/acpi-common.c
index 5caca16a0b..ab9b00581a 100644
--- a/hw/i386/acpi-common.c
+++ b/hw/i386/acpi-common.c
@@ -72,7 +72,8 @@ void pc_madt_cpu_entry(AcpiDeviceIf *adev, int uid,
 }
 
 void acpi_build_madt(GArray *table_data, BIOSLinker *linker,
-                     X86MachineState *x86ms, AcpiDeviceIf *adev)
+                     X86MachineState *x86ms, AcpiDeviceIf *adev,
+                     bool has_pci)
 {
     MachineClass *mc = MACHINE_GET_CLASS(x86ms);
     const CPUArchIdList *apic_ids = mc->possible_cpu_arch_ids(MACHINE(x86ms));
@@ -111,18 +112,21 @@ void acpi_build_madt(GArray *table_data, BIOSLinker *linker,
         intsrcovr->gsi    = cpu_to_le32(2);
         intsrcovr->flags  = cpu_to_le16(0); /* conforms to bus specifications */
     }
-    for (i = 1; i < 16; i++) {
+
+    if (has_pci) {
+        for (i = 1; i < 16; i++) {
 #define ACPI_BUILD_PCI_IRQS ((1<<5) | (1<<9) | (1<<10) | (1<<11))
-        if (!(ACPI_BUILD_PCI_IRQS & (1 << i))) {
-            /* No need for a INT source override structure. */
-            continue;
+            if (!(ACPI_BUILD_PCI_IRQS & (1 << i))) {
+                /* No need for a INT source override structure. */
+                continue;
+            }
+            intsrcovr = acpi_data_push(table_data, sizeof *intsrcovr);
+            intsrcovr->type   = ACPI_APIC_XRUPT_OVERRIDE;
+            intsrcovr->length = sizeof(*intsrcovr);
+            intsrcovr->source = i;
+            intsrcovr->gsi    = cpu_to_le32(i);
+            intsrcovr->flags  = cpu_to_le16(0xd); /* active high, level triggered */
         }
-        intsrcovr = acpi_data_push(table_data, sizeof *intsrcovr);
-        intsrcovr->type   = ACPI_APIC_XRUPT_OVERRIDE;
-        intsrcovr->length = sizeof(*intsrcovr);
-        intsrcovr->source = i;
-        intsrcovr->gsi    = cpu_to_le32(i);
-        intsrcovr->flags  = cpu_to_le16(0xd); /* active high, level triggered */
     }
 
     if (x2apic_mode) {
-- 
MST