x86/kvm/vmx: Don't fetch the TSS base from the GDT

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The current CPU's TSS base is a foregone conclusion, so there's no need
to parse it out of the segment tables.  This should save a couple cycles
(as STR is surely microcoded and poorly optimized) but, more importantly,
it's a cleanup and it means that segment_base() will never be called on
64-bit kernels.

Cc: Thomas Garnier <thgarnie@google.com>
Cc: Jim Mattson <jmattson@google.com>
Cc: Radim Krčmář <rkrcmar@redhat.com>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Andy Lutomirski <luto@kernel.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

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Andy Lutomirski 2017-02-20 08:56:10 -08:00 • committed by Paolo Bonzini

parent 4f53ab1428

commit e0c230634a

1 changed files with 4 additions and 10 deletions

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arch/x86/kvm/vmx.c

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