Build a machine with 2 sockets with 2 cores each,
and 3 NUMA nodes.
1st NUMA is local to socket #0 (cores #0-1).
2nd NUMA is local to socket #1 (cores #2-3).
3rd NUMA has no initiator.
HMAT SLLB says memory access performance of 3rd NUMA is lower,
but it's identical for both sockets
hence all cores are its best initiator.

Expected HMAT:

[000h 0000   4]                    Signature : "HMAT"    [Heterogeneous Memory Attributes Table]
[004h 0004   4]                 Table Length : 00000120
[008h 0008   1]                     Revision : 02
[009h 0009   1]                     Checksum : 4F
[00Ah 0010   6]                       Oem ID : "BOCHS "
[010h 0016   8]                 Oem Table ID : "BXPC    "
[018h 0024   4]                 Oem Revision : 00000001
[01Ch 0028   4]              Asl Compiler ID : "BXPC"
[020h 0032   4]        Asl Compiler Revision : 00000001

[024h 0036   4]                     Reserved : 00000000

[028h 0040   2]               Structure Type : 0000 [Memory Proximity Domain Attributes]
[02Ah 0042   2]                     Reserved : 0000
[02Ch 0044   4]                       Length : 00000028
[030h 0048   2]        Flags (decoded below) : 0001
             Processor Proximity Domain Valid : 1
[032h 0050   2]                    Reserved1 : 0000
[034h 0052   4] Attached Initiator Proximity Domain : 00000000
[038h 0056   4]      Memory Proximity Domain : 00000000
[03Ch 0060   4]                    Reserved2 : 00000000
[040h 0064   8]                    Reserved3 : 0000000000000000
[048h 0072   8]                    Reserved4 : 0000000000000000

[050h 0080   2]               Structure Type : 0000 [Memory Proximity Domain Attributes]
[052h 0082   2]                     Reserved : 0000
[054h 0084   4]                       Length : 00000028
[058h 0088   2]        Flags (decoded below) : 0001
             Processor Proximity Domain Valid : 1
[05Ah 0090   2]                    Reserved1 : 0000
[05Ch 0092   4] Attached Initiator Proximity Domain : 00000001
[060h 0096   4]      Memory Proximity Domain : 00000001
[064h 0100   4]                    Reserved2 : 00000000
[068h 0104   8]                    Reserved3 : 0000000000000000
[070h 0112   8]                    Reserved4 : 0000000000000000

[078h 0120   2]               Structure Type : 0000 [Memory Proximity Domain Attributes]
[07Ah 0122   2]                     Reserved : 0000
[07Ch 0124   4]                       Length : 00000028
[080h 0128   2]        Flags (decoded below) : 0000
             Processor Proximity Domain Valid : 0
[082h 0130   2]                    Reserved1 : 0000
[084h 0132   4] Attached Initiator Proximity Domain : 00000080
[088h 0136   4]      Memory Proximity Domain : 00000002
[08Ch 0140   4]                    Reserved2 : 00000000
[090h 0144   8]                    Reserved3 : 0000000000000000
[098h 0152   8]                    Reserved4 : 0000000000000000

[0A0h 0160   2]               Structure Type : 0001 [System Locality Latency and Bandwidth Information]
[0A2h 0162   2]                     Reserved : 0000
[0A4h 0164   4]                       Length : 00000040
[0A8h 0168   1]        Flags (decoded below) : 00
                             Memory Hierarchy : 0
[0A9h 0169   1]                    Data Type : 00
[0AAh 0170   2]                    Reserved1 : 0000
[0ACh 0172   4] Initiator Proximity Domains # : 00000002
[0B0h 0176   4]   Target Proximity Domains # : 00000003
[0B4h 0180   4]                    Reserved2 : 00000000
[0B8h 0184   8]              Entry Base Unit : 0000000000002710
[0C0h 0192   4] Initiator Proximity Domain List : 00000000
[0C4h 0196   4] Initiator Proximity Domain List : 00000001
[0C8h 0200   4] Target Proximity Domain List : 00000000
[0CCh 0204   4] Target Proximity Domain List : 00000001
[0D0h 0208   4] Target Proximity Domain List : 00000002
[0D4h 0212   2]                        Entry : 0001
[0D6h 0214   2]                        Entry : 0002
[0D8h 0216   2]                        Entry : 0003
[0DAh 0218   2]                        Entry : 0002
[0DCh 0220   2]                        Entry : 0001
[0DEh 0222   2]                        Entry : 0003

[0E0h 0224   2]               Structure Type : 0001 [System Locality Latency and Bandwidth Information]
[0E2h 0226   2]                     Reserved : 0000
[0E4h 0228   4]                       Length : 00000040
[0E8h 0232   1]        Flags (decoded below) : 00
                             Memory Hierarchy : 0
[0E9h 0233   1]                    Data Type : 03
[0EAh 0234   2]                    Reserved1 : 0000
[0ECh 0236   4] Initiator Proximity Domains # : 00000002
[0F0h 0240   4]   Target Proximity Domains # : 00000003
[0F4h 0244   4]                    Reserved2 : 00000000
[0F8h 0248   8]              Entry Base Unit : 0000000000000001
[100h 0256   4] Initiator Proximity Domain List : 00000000
[104h 0260   4] Initiator Proximity Domain List : 00000001
[108h 0264   4] Target Proximity Domain List : 00000000
[10Ch 0268   4] Target Proximity Domain List : 00000001
[110h 0272   4] Target Proximity Domain List : 00000002
[114h 0276   2]                        Entry : 000A
[116h 0278   2]                        Entry : 0005
[118h 0280   2]                        Entry : 0001
[11Ah 0282   2]                        Entry : 0005
[11Ch 0284   2]                        Entry : 000A
[11Eh 0286   2]                        Entry : 0001

Raw Table Data: Length 288 (0x120)

     0000: 48 4D 41 54 20 01 00 00 02 4F 42 4F 43 48 53 20  // HMAT ....OBOCHS
     0010: 42 58 50 43 20 20 20 20 01 00 00 00 42 58 50 43  // BXPC    ....BXPC
     0020: 01 00 00 00 00 00 00 00 00 00 00 00 28 00 00 00  // ............(...
     0030: 01 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  // ................
     0040: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  // ................
     0050: 00 00 00 00 28 00 00 00 01 00 00 00 01 00 00 00  // ....(...........
     0060: 01 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  // ................
     0070: 00 00 00 00 00 00 00 00 00 00 00 00 28 00 00 00  // ............(...
     0080: 00 00 00 00 80 00 00 00 02 00 00 00 00 00 00 00  // ................
     0090: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  // ................
     00A0: 01 00 00 00 40 00 00 00 00 00 00 00 02 00 00 00  // ....@...........
     00B0: 03 00 00 00 00 00 00 00 10 27 00 00 00 00 00 00  // .........'......
     00C0: 00 00 00 00 01 00 00 00 00 00 00 00 01 00 00 00  // ................
     00D0: 02 00 00 00 01 00 02 00 03 00 02 00 01 00 03 00  // ................
     00E0: 01 00 00 00 40 00 00 00 00 03 00 00 02 00 00 00  // ....@...........
     00F0: 03 00 00 00 00 00 00 00 01 00 00 00 00 00 00 00  // ................
     0100: 00 00 00 00 01 00 00 00 00 00 00 00 01 00 00 00  // ................
     0110: 02 00 00 00 0A 00 05 00 01 00 05 00 0A 00 01 00  // ................

Signed-off-by: Brice Goglin <Brice.Goglin@inria.fr>
Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
---
  tests/qtest/bios-tables-test.c | 49 ++++++++++++++++++++++++++++++++++
  1 file changed, 49 insertions(+)

diff --git a/tests/qtest/bios-tables-test.c b/tests/qtest/bios-tables-test.c
index 359916c228..0cea6684dc 100644
--- a/tests/qtest/bios-tables-test.c
+++ b/tests/qtest/bios-tables-test.c
@@ -1461,6 +1461,54 @@ static void test_acpi_piix4_tcg_acpi_hmat(void)
      test_acpi_tcg_acpi_hmat(MACHINE_PC);
  }
  
+static void test_acpi_q35_tcg_acpi_hmat_noinitiator(void)
+{
+    test_data data;
+
+    memset(&data, 0, sizeof(data));
+    data.machine = MACHINE_Q35;
+    data.variant = ".acpihmat-noinitiator";
+    test_acpi_one(" -machine hmat=on"
+                  " -smp 4,sockets=2"
+                  " -m 128M"
+                  " -object memory-backend-ram,size=32M,id=ram0"
+                  " -object memory-backend-ram,size=32M,id=ram1"
+                  " -object memory-backend-ram,size=64M,id=ram2"
+                  " -numa node,nodeid=0,memdev=ram0"
+                  " -numa node,nodeid=1,memdev=ram1"
+                  " -numa node,nodeid=2,memdev=ram2"
+                  " -numa cpu,node-id=0,socket-id=0"
+                  " -numa cpu,node-id=0,socket-id=0"
+                  " -numa cpu,node-id=1,socket-id=1"
+                  " -numa cpu,node-id=1,socket-id=1"
+                  " -numa hmat-lb,initiator=0,target=0,hierarchy=memory,"
+                  "data-type=access-latency,latency=10"
+                  " -numa hmat-lb,initiator=0,target=0,hierarchy=memory,"
+                  "data-type=access-bandwidth,bandwidth=10485760"
+                  " -numa hmat-lb,initiator=0,target=1,hierarchy=memory,"
+                  "data-type=access-latency,latency=20"
+                  " -numa hmat-lb,initiator=0,target=1,hierarchy=memory,"
+                  "data-type=access-bandwidth,bandwidth=5242880"
+                  " -numa hmat-lb,initiator=0,target=2,hierarchy=memory,"
+                  "data-type=access-latency,latency=30"
+                  " -numa hmat-lb,initiator=0,target=2,hierarchy=memory,"
+                  "data-type=access-bandwidth,bandwidth=1048576"
+                  " -numa hmat-lb,initiator=1,target=0,hierarchy=memory,"
+                  "data-type=access-latency,latency=20"
+                  " -numa hmat-lb,initiator=1,target=0,hierarchy=memory,"
+                  "data-type=access-bandwidth,bandwidth=5242880"
+                  " -numa hmat-lb,initiator=1,target=1,hierarchy=memory,"
+                  "data-type=access-latency,latency=10"
+                  " -numa hmat-lb,initiator=1,target=1,hierarchy=memory,"
+                  "data-type=access-bandwidth,bandwidth=10485760"
+                  " -numa hmat-lb,initiator=1,target=2,hierarchy=memory,"
+                  "data-type=access-latency,latency=30"
+                  " -numa hmat-lb,initiator=1,target=2,hierarchy=memory,"
+                  "data-type=access-bandwidth,bandwidth=1048576",
+                  &data);
+    free_test_data(&data);
+}
+
  static void test_acpi_erst(const char *machine)
  {
      gchar *tmp_path = g_dir_make_tmp("qemu-test-erst.XXXXXX", NULL);
@@ -1803,6 +1851,7 @@ int main(int argc, char *argv[])
          qtest_add_func("acpi/q35/dimmpxm", test_acpi_q35_tcg_dimm_pxm);
          qtest_add_func("acpi/piix4/acpihmat", test_acpi_piix4_tcg_acpi_hmat);
          qtest_add_func("acpi/q35/acpihmat", test_acpi_q35_tcg_acpi_hmat);
+        qtest_add_func("acpi/q35/acpihmat-noinitiator", test_acpi_q35_tcg_acpi_hmat_noinitiator);
          qtest_add_func("acpi/piix4/acpierst", test_acpi_piix4_acpi_erst);
          qtest_add_func("acpi/q35/acpierst", test_acpi_q35_acpi_erst);
          qtest_add_func("acpi/q35/applesmc", test_acpi_q35_applesmc);
-- 
2.30.2