The recommended way to obtain the vcpu id is using the cpuid instruction with a specific leaf value. This leaf value must be obtained at runtime, and it's done when populating the hypercall page. Legacy PVH however will get the hypercall page populated by the hypervisor itself before booting, so the cpuid leaf was not actually set, thus preventing setting the vcpu id value from cpuid. Fix this by making sure the cpuid leaf has been probed before attempting to set the vcpu id. Approved by: re (gjb) Sponsored by: Citrix Systems R&D |
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acpica | ||
bios | ||
cpufreq | ||
include | ||
iommu | ||
isa | ||
pci | ||
x86 | ||
xen |