hvm: NUMA guest: inject NUMA topology into the guest (resend)

diff -r f70a956b987f tools/firmware/hvmloader/acpi/acpi2_0.h
@@ -356,6 +356,61 @@
 };
 
 /*
+ * System Resource Affinity Table header definition (SRAT).
+ */
+struct acpi_20_srat {
+    struct acpi_header header;
+    uint32_t table_revision;
+    uint32_t reserved2[2];
+};
+
+#define ACPI_SRAT_TABLE_REVISION 1
+
+/*
+ * System Resource Affinity Table structure types.
+ */
+#define ACPI_PROCESSOR_AFFIN           0x00
+#define ACPI_MEMORY_AFFIN              0x01
+
+struct acpi_20_srat_processor {
+    uint8_t type;
+    uint8_t length;
+    uint8_t domain;
+    uint8_t apic_id;
+    uint32_t flags;
+    uint8_t sapic_id;
+    uint8_t domain_hi[3];
+    uint32_t reserved;
+};
+
+/*
+ * Local APIC Affinity Flags.  All other bits are reserved and must be 0.
+ */
+#define ACPI_LOCAL_APIC_AFFIN_ENABLED (1 << 0)
+
+struct acpi_20_srat_memory {
+    uint8_t type;
+    uint8_t length;
+    uint8_t domain;
+    uint8_t domain_hi[3];	/* this is ACPI 3.0, reserved in 2.0 */
+    uint16_t reserved;
+    uint32_t base_address_lo;
+    uint32_t base_address_hi;
+    uint32_t length_lo;
+    uint32_t length_hi;
+    uint32_t reserved2;
+    uint32_t flags;
+    uint32_t reserved3[2];
+};
+
+/*
+ * Memory Affinity Flags.  All other bits are reserved and must be 0.
+ */
+#define ACPI_MEM_AFFIN_ENABLED (1 << 0)
+#define ACPI_MEM_AFFIN_HOTPLUGGABLE (1 << 1)
+#define ACPI_MEM_AFFIN_NONVOLATILE (1 << 2)  /* this is ACPI 3.0 */
+
+/*
  * Table Signatures.
  */
 #define ACPI_2_0_RSDP_SIGNATURE ASCII64('R','S','D',' ','P','T','R',' ')

@@ -366,6 +421,7 @@
 #define ACPI_2_0_XSDT_SIGNATURE ASCII32('X','S','D','T')
 #define ACPI_2_0_TCPA_SIGNATURE ASCII32('T','C','P','A')
 #define ACPI_2_0_HPET_SIGNATURE ASCII32('H','P','E','T')
+#define ACPI_2_0_SRAT_SIGNATURE ASCII32('S','R','A','T')
 
 /*
  * Table revision numbers.

@@ -378,6 +434,7 @@
 #define ACPI_2_0_TCPA_REVISION 0x02
 #define ACPI_2_0_HPET_REVISION 0x01
 #define ACPI_1_0_FADT_REVISION 0x01
+#define ACPI_2_0_SRAT_REVISION 0x01
 
 #pragma pack ()
 

170 lines not on this page · raw message

diff -r f70a956b987f tools/firmware/hvmloader/util.c
@@ -594,6 +594,12 @@
     return (t ? t->nr_vcpus : 1);
 }
 
+int get_numanodes(void)
+{
+    struct hvm_info_table *t = get_hvm_info_table();
+    return (t ? t->numanodes : 1);
+}
+
 int get_acpi_enabled(void)
 {
     struct hvm_info_table *t = get_hvm_info_table();

diff -r f70a956b987f tools/firmware/hvmloader/util.h
@@ -104,6 +104,7 @@
 
 /* HVM-builder info. */
 int get_vcpu_nr(void);
+int get_numanodes(void);
 int get_acpi_enabled(void);
 int get_apic_mode(void);
 

diff -r f70a956b987f tools/python/xen/lowlevel/xc/xc.c
@@ -861,6 +861,18 @@
 
 #endif /* __i386__ || __x86_64__ */
 
+static unsigned hweight_long (unsigned long value)
+{
+int ret=0;
+
+    while (value>0)
+    {
+        if (value&1) ++ret;
+        value>>=1;
+    }
+    return ret;
+}
+
 static PyObject *pyxc_hvm_build(XcObject *self,
                                 PyObject *args,
                                 PyObject *kwds)

@@ -900,6 +912,7 @@
     va_hvm->acpi_enabled = acpi;
     va_hvm->apic_mode    = apic;
     va_hvm->nr_vcpus     = vcpus;
+    va_hvm->numanodes    = hweight_long(nodemask);
     for ( i = 0, sum = 0; i < va_hvm->length; i++ )
         sum += ((uint8_t *)va_hvm)[i];
     va_hvm->checksum = -sum;

diff -r f70a956b987f xen/include/public/hvm/hvm_info_table.h
@@ -36,6 +36,7 @@
     uint8_t     acpi_enabled;
     uint8_t     apic_mode;
     uint32_t    nr_vcpus;
+    uint32_t    numanodes;
 };
 
 #endif /* __XEN_PUBLIC_HVM_HVM_INFO_TABLE_H__ */