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make_all_cpus_request contains a race condition which can trigger false request completed status, as follows: CPU0 CPU1 if (test_and_set_bit(req,&vcpu->requests)) .... if (test_and_set_bit(req,&vcpu->requests)) .. return proceed to smp_call_function_many(wait=1) Use a spinlock to serialize concurrent CPUs. Cc: stable@kernel.org Signed-off-by: Andrea Arcangeli <aarcange@redhat.com> Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com> Signed-off-by: Avi Kivity <avi@redhat.com> |
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coalesced_mmio.c | ||
coalesced_mmio.h | ||
ioapic.c | ||
ioapic.h | ||
iodev.h | ||
iommu.c | ||
irq_comm.c | ||
kvm_main.c | ||
kvm_trace.c |