Re: [PATCH] x86/xen: Disable APIC PM for Xen PV guests

2014-03-17 Thread Boris Ostrovsky
On 03/03/2014 09:40 PM, Boris Ostrovsky wrote: Xen PV guests support only few APIC registers and writes to unsupported registers result in WARN_ONs. Most APIC accesses in these guests have been eliminated; however, lapic_suspend/resume are still called (on 32-bit kernels). We can disable APIC p

Re: [PATCH] x86/xen: Disable APIC PM for Xen PV guests

2014-03-04 Thread Boris Ostrovsky
On 03/04/2014 05:25 AM, David Vrabel wrote: On 04/03/14 02:40, Boris Ostrovsky wrote: Xen PV guests support only few APIC registers and writes to unsupported registers result in WARN_ONs. Most APIC accesses in these guests have been eliminated; however, lapic_suspend/resume are still called (on

Re: [PATCH] x86/xen: Disable APIC PM for Xen PV guests

2014-03-04 Thread David Vrabel
On 04/03/14 02:40, Boris Ostrovsky wrote: > Xen PV guests support only few APIC registers and writes to > unsupported registers result in WARN_ONs. Most APIC accesses in these > guests have been eliminated; however, lapic_suspend/resume are still > called (on 32-bit kernels). > > We can disable A

[PATCH] x86/xen: Disable APIC PM for Xen PV guests

2014-03-03 Thread Boris Ostrovsky
Xen PV guests support only few APIC registers and writes to unsupported registers result in WARN_ONs. Most APIC accesses in these guests have been eliminated; however, lapic_suspend/resume are still called (on 32-bit kernels). We can disable APIC power management in xen_smp_prepare_boot_cpu() (wh