D61521.1794708956.diff
No OneTemporary
Actions

Authored By

Unknown

Size

1 KB

Referenced Files

None

Subscribers

None

D61521.1794708956.diff
View Options

	diff --git a/sys/x86/x86/mp_x86.c b/sys/x86/x86/mp_x86.c
	--- a/sys/x86/x86/mp_x86.c
	+++ b/sys/x86/x86/mp_x86.c
	@@ -423,22 +423,29 @@
	return;
	}

	- /* We only support three levels for now. */
	+ /*
	+ * Each level reports the shift that addresses the next level up, so
	+ * the shift of the last level enumerated is the package's. Leaf 1Fh
	+ * may enumerate module, tile, die and die group levels above the core
	+ * level; they are not represented in the topology, but they must not
	+ * be mistaken for the package boundary.
	+ */
	for (i = 0; ; i++) {
	cpuid_count(leaf, i, p);

	bits = p[0] & 0x1f;
	type = (p[2] >> 8) & 0xff;

	- if (type == 0)
	+ /* A level without logical processors also ends the list. */
	+ if (type == 0 \|\| (p[1] & 0xffff) == 0)
	break;

	+ pkg_id_shift = bits;
	if (type == CPUID_TYPE_SMT)
	core_id_shift = bits;
	- else if (type == CPUID_TYPE_CORE)
	- pkg_id_shift = bits;
	- else if (bootverbose)
	- printf("Topology level type %d shift: %d\n", type, bits);
	+ else if (type != CPUID_TYPE_CORE && bootverbose)
	+ printf("Topology level type %d shift: %d\n", type,
	+ bits);
	}

	if (pkg_id_shift < core_id_shift) {