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authorPaolo Bonzini <pbonzini@redhat.com>2015-07-29 11:06:34 +0200
committerPaolo Bonzini <pbonzini@redhat.com>2015-07-29 14:27:23 +0200
commitc847fe8895fded71d0b9a0ba58d3828320fd1824 (patch)
tree8a2e5f7f5cf0300c3cea056c782884cfae72bde0 /tools/perf/scripts/python/call-graph-from-postgresql.py
parentKVM: move code related to KVM_SET_BOOT_CPU_ID to x86 (diff)
downloadlinux-dev-c847fe8895fded71d0b9a0ba58d3828320fd1824.tar.xz
linux-dev-c847fe8895fded71d0b9a0ba58d3828320fd1824.zip
KVM: x86: remove unnecessary memory barriers for shared MSRs
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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