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authorSean Christopherson <seanjc@google.com>2024-03-06 17:13:42 -0800
committerSean Christopherson <seanjc@google.com>2024-04-11 12:58:46 -0700
commit447112d7edd77fa468938377418434233bcb3709 (patch)
treea09c7abb357f62c358ce77af2fd47f200affb6de /tools/perf/scripts/python/call-graph-from-postgresql.py
parentKVM: VMX: Ignore MKTME KeyID bits when intercepting #PF for allow_smaller_maxphyaddr (diff)
downloadwireguard-linux-447112d7edd77fa468938377418434233bcb3709.tar.xz
wireguard-linux-447112d7edd77fa468938377418434233bcb3709.zip
KVM: VMX: Snapshot LBR capabilities during module initialization
Snapshot VMX's LBR capabilities once during module initialization instead of calling into perf every time a vCPU reconfigures its vPMU. This will allow massaging the LBR capabilities, e.g. if the CPU doesn't support callstacks, without having to remember to update multiple locations. Opportunistically tag vmx_get_perf_capabilities() with __init, as it's only called from vmx_set_cpu_caps(). Reviewed-by: Mingwei Zhang <mizhang@google.com> Link: https://lore.kernel.org/r/20240307011344.835640-2-seanjc@google.com Signed-off-by: Sean Christopherson <seanjc@google.com>
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