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| author | Vitaly Kuznetsov <[email protected]> | 2018-08-22 12:18:28 +0200 |
|---|---|---|
| committer | Paolo Bonzini <[email protected]> | 2018-10-17 00:29:43 +0200 |
| commit | 9170200ec0ebad70e5b9902bc93e2b1b11456a3b (patch) | |
| tree | 2a935ca68f0dea412ba37fa77380cd6306583804 /tools/perf/scripts/python/syscall-counts-by-pid.py | |
| parent | 0624fca9512d08cbd9b5d098d904c840d3432404 (diff) | |
KVM: x86: hyperv: enforce vp_index < KVM_MAX_VCPUS
Hyper-V TLFS (5.0b) states:
> Virtual processors are identified by using an index (VP index). The
> maximum number of virtual processors per partition supported by the
> current implementation of the hypervisor can be obtained through CPUID
> leaf 0x40000005. A virtual processor index must be less than the
> maximum number of virtual processors per partition.
Forbid userspace to set VP_INDEX above KVM_MAX_VCPUS. get_vcpu_by_vpidx()
can now be optimized to bail early when supplied vpidx is >= KVM_MAX_VCPUS.
Signed-off-by: Vitaly Kuznetsov <[email protected]>
Reviewed-by: Roman Kagan <[email protected]>
Signed-off-by: Paolo Bonzini <[email protected]>
Diffstat (limited to 'tools/perf/scripts/python/syscall-counts-by-pid.py')
0 files changed, 0 insertions, 0 deletions