KVM: x86: remove unnecessary memory barriers for shared MSRs

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There is no smp_rmb matching the smp_wmb.  shared_msr_update is called from
hardware_enable, which in turn is called via on_each_cpu.  on_each_cpu
and must imply a read memory barrier (on x86 the rmb is achieved simply
through asm volatile in native_apic_mem_write).

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

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Paolo Bonzini 2015-07-29 11:06:34 +02:00

parent d71ba78834

commit c847fe8895

1 changed files with 1 additions and 3 deletions

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arch/x86/kvm/x86.c

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