x86/kvm: virt_xxx memory barriers instead of mandatory barriers

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virt_xxx memory barriers are implemented trivially using the low-level
__smp_xxx macros, __smp_xxx is equal to a compiler barrier for strong
TSO memory model, however, mandatory barriers will unconditional add
memory barriers, this patch replaces the rmb() in kvm_steal_clock() by
virt_rmb().

Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: Radim Krčmář <rkrcmar@redhat.com>
Signed-off-by: Wanpeng Li <wanpeng.li@hotmail.com>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Radim Krčmář <rkrcmar@redhat.com>

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Wanpeng Li 2017-04-11 02:49:21 -07:00 • committed by Radim Krčmář

parent bd8fab39cd

commit 5a48a62271

1 changed files with 2 additions and 2 deletions

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arch/x86/kernel/kvm.c

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