[Qemu-devel] [PATCH 2/8] v2: push NUMA topology to the BIOS

[Qemu-devel] [PATCH 2/8] v2: push NUMA topology to the BIOS

[Andre Przywara]

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Signed-off-by: Andre Przywara <andre.przywara@amd.com>

-- 
Andre Przywara
AMD-Operating System Research Center (OSRC), Dresden, Germany
Tel: +49 351 277-84917
----to satisfy European Law for business letters:
AMD Saxony Limited Liability Company & Co. KG,
Wilschdorfer Landstr. 101, 01109 Dresden, Germany
Register Court Dresden: HRA 4896, General Partner authorized
to represent: AMD Saxony LLC (Wilmington, Delaware, US)
General Manager of AMD Saxony LLC: Dr. Hans-R. Deppe, Thomas McCoy

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# HG changeset patch
# User Andre Przywara <andre.przywara@amd.com>
# Date 1229430504 -3600
# Node ID a0a2e3026d4acffdce91b776d8c2d733767693c5
# Parent  6690ab0a34fdedaebbfe1068dfe7351734e8a1d7
push NUMA topology info to the BIOS

diff -r 6690ab0a34fd -r a0a2e3026d4a hw/fw_cfg.h
--- a/hw/fw_cfg.h	Tue Dec 16 12:13:10 2008 +0100
+++ b/hw/fw_cfg.h	Tue Dec 16 13:28:24 2008 +0100
@@ -8,6 +8,9 @@
 #define FW_CFG_NOGRAPHIC        0x04
 #define FW_CFG_NB_CPUS          0x05
 #define FW_CFG_MACHINE_ID       0x06
+#define FW_CFG_NUMA_NODES       0x07
+#define FW_CFG_NUMA_NODE_CPUS   0x08
+#define FW_CFG_NUMA_NODE_MEM    0x09
 #define FW_CFG_MAX_ENTRY        0x10
 
 #define FW_CFG_WRITE_CHANNEL    0x4000
diff -r 6690ab0a34fd -r a0a2e3026d4a hw/pc.c
--- a/hw/pc.c	Tue Dec 16 12:13:10 2008 +0100
+++ b/hw/pc.c	Tue Dec 16 13:28:24 2008 +0100
@@ -436,6 +436,12 @@ static void bochs_bios_init(void)
     fw_cfg = fw_cfg_init(BIOS_CFG_IOPORT, BIOS_CFG_IOPORT + 1, 0, 0);
     fw_cfg_add_i32(fw_cfg, FW_CFG_ID, 1);
     fw_cfg_add_i64(fw_cfg, FW_CFG_RAM_SIZE, (uint64_t)ram_size);
+    fw_cfg_add_i16(fw_cfg, FW_CFG_NUMA_NODES, numnumanodes);
+
+    fw_cfg_add_bytes(fw_cfg, FW_CFG_NUMA_NODE_MEM, (uint8_t*)node_mem,
+        sizeof(node_mem[0]) * numnumanodes);
+    fw_cfg_add_bytes(fw_cfg, FW_CFG_NUMA_NODE_CPUS, (uint8_t*)node_to_cpus,
+        sizeof(node_to_cpus[0]) * numnumanodes);
 }
 
 /* Generate an initial boot sector which sets state and jump to