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-rw-r--r--xen/include/public/arch-x86_64.h3
1 files changed, 3 insertions, 0 deletions
diff --git a/xen/include/public/arch-x86_64.h b/xen/include/public/arch-x86_64.h
index a4f4ac2fcf..634c53a34e 100644
--- a/xen/include/public/arch-x86_64.h
+++ b/xen/include/public/arch-x86_64.h
@@ -73,6 +73,9 @@
#define HYPERVISOR_VIRT_END (0xFFFF880000000000UL)
#endif
+/* Maximum number of virtual CPUs in multi-processor guests. */
+#define MAX_VIRT_CPUS 32
+
#ifndef __ASSEMBLY__
/* The machine->physical mapping table starts at this address, read-only. */