Marc Zyngier 1f03b2bcd0 KVM: Disable preemption in kvm_get_running_vcpu() ... Accessing a per-cpu variable only makes sense when preemption is disabled (and the kernel does check this when the right debug options are switched on). For kvm_get_running_vcpu(), it is fine to return the value after re-enabling preemption, as the preempt notifiers will make sure that this is kept consistent across task migration (the comment above the function hints at it, but lacks the crucial preemption management). While we're at it, move the comment from the ARM code, which explains why the whole thing works. Fixes: 7495e22bb1 ("KVM: Move running VCPU from ARM to common code"). Cc: Paolo Bonzini <pbonzini@redhat.com> Reported-by: Zenghui Yu <yuzenghui@huawei.com> Tested-by: Zenghui Yu <yuzenghui@huawei.com> Reviewed-by: Peter Xu <peterx@redhat.com> Signed-off-by: Marc Zyngier <maz@kernel.org> Link: https://lore.kernel.org/r/318984f6-bc36-33a3-abc6-bf2295974b06@huawei.com Message-id: <20200207163410.31276-1-maz@kernel.org> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>		2020-02-12 12:19:35 +01:00
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kvm	KVM: Disable preemption in kvm_get_running_vcpu()	2020-02-12 12:19:35 +01:00
lib	KVM: lib: use jump label to handle resource release in irq_bypass_register_producer()	2020-01-08 18:16:01 +01:00
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