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| author | Vitaly Kuznetsov <[email protected]> | 2018-03-13 18:48:05 +0100 |
|---|---|---|
| committer | Paolo Bonzini <[email protected]> | 2018-03-16 22:03:54 +0100 |
| commit | 35060ed6a1ffc92106904f5e4b5823ca4facfc73 (patch) | |
| tree | 8bb681a4e0b7c15fd173e0c27aba1bd2460856ec /tools/perf/scripts/python/syscall-counts.py | |
| parent | 42b933b59721f288e3ce23ca79a17a973808dab9 (diff) | |
x86/kvm/vmx: avoid expensive rdmsr for MSR_GS_BASE
vmx_save_host_state() is only called from kvm_arch_vcpu_ioctl_run() so
the context is pretty well defined and as we're past 'swapgs' MSR_GS_BASE
should contain kernel's GS base which we point to irq_stack_union.
Add new kernelmode_gs_base() API, irq_stack_union needs to be exported
as KVM can be build as module.
Acked-by: Andy Lutomirski <[email protected]>
Signed-off-by: Vitaly Kuznetsov <[email protected]>
Signed-off-by: Paolo Bonzini <[email protected]>
Diffstat (limited to 'tools/perf/scripts/python/syscall-counts.py')
0 files changed, 0 insertions, 0 deletions