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xen: re-register runstate area earlier on resume.
This is necessary to ensure the runstate area is available to xen_sched_clock before any calls to printk which will require it in order to provide a timestamp. I chose to pull the xen_setup_runstate_info out of xen_time_init into the caller in order to maintain parity with calling xen_setup_runstate_info separately from calling xen_time_resume. Signed-off-by: Ian Campbell <ian.campbell@citrix.com> Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com> Cc: Stable Kernel <stable@kernel.org>
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ae78880129
commit
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3 changed files with 5 additions and 3 deletions
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@ -148,6 +148,8 @@ void xen_vcpu_restore(void)
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HYPERVISOR_vcpu_op(VCPUOP_down, cpu, NULL))
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BUG();
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xen_setup_runstate_info(cpu);
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xen_vcpu_setup(cpu);
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if (other_cpu &&
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@ -100,7 +100,7 @@ bool xen_vcpu_stolen(int vcpu)
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return per_cpu(runstate, vcpu).state == RUNSTATE_runnable;
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}
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static void setup_runstate_info(int cpu)
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void xen_setup_runstate_info(int cpu)
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{
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struct vcpu_register_runstate_memory_area area;
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@ -442,8 +442,6 @@ void xen_setup_timer(int cpu)
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evt->cpumask = cpumask_of(cpu);
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evt->irq = irq;
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setup_runstate_info(cpu);
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}
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void xen_teardown_timer(int cpu)
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@ -494,6 +492,7 @@ __init void xen_time_init(void)
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setup_force_cpu_cap(X86_FEATURE_TSC);
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xen_setup_runstate_info(cpu);
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xen_setup_timer(cpu);
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xen_setup_cpu_clockevents();
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}
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@ -41,6 +41,7 @@ void __init xen_build_dynamic_phys_to_machine(void);
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void xen_init_irq_ops(void);
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void xen_setup_timer(int cpu);
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void xen_setup_runstate_info(int cpu);
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void xen_teardown_timer(int cpu);
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cycle_t xen_clocksource_read(void);
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void xen_setup_cpu_clockevents(void);
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