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Diffstat (limited to 'arch/x86/include/asm/mshyperv.h')
-rw-r--r--arch/x86/include/asm/mshyperv.h5
1 files changed, 4 insertions, 1 deletions
diff --git a/arch/x86/include/asm/mshyperv.h b/arch/x86/include/asm/mshyperv.h
index 3cd14311edfa..5a7375ed5f7c 100644
--- a/arch/x86/include/asm/mshyperv.h
+++ b/arch/x86/include/asm/mshyperv.h
@@ -9,6 +9,8 @@
#include <asm/hyperv-tlfs.h>
#include <asm/nospec-branch.h>
+#define VP_INVAL U32_MAX
+
struct ms_hyperv_info {
u32 features;
u32 misc_features;
@@ -20,7 +22,6 @@ struct ms_hyperv_info {
extern struct ms_hyperv_info ms_hyperv;
-
/*
* Generate the guest ID.
*/
@@ -281,6 +282,8 @@ static inline int cpumask_to_vpset(struct hv_vpset *vpset,
*/
for_each_cpu(cpu, cpus) {
vcpu = hv_cpu_number_to_vp_number(cpu);
+ if (vcpu == VP_INVAL)
+ return -1;
vcpu_bank = vcpu / 64;
vcpu_offset = vcpu % 64;
__set_bit(vcpu_offset, (unsigned long *)