Re: [PATCH V4] x86: call smp vmxoff in smp stop

2017-04-19 Thread Ingo Molnar
* Paolo Bonzini wrote: > > > > On 18/01/2017 12:32, Xishi Qiu wrote: > > > > From: Tiantian Feng > > > > > > > > We need to disable VMX on all CPUs before stop cpu when OS panic, > > > > otherwisewe risk hanging up the machine, because the CPU ignore INIT > > > > signals when VMX is enabled.

Re: [PATCH V4] x86: call smp vmxoff in smp stop

2017-04-19 Thread Paolo Bonzini
> > On 18/01/2017 12:32, Xishi Qiu wrote: > > > From: Tiantian Feng > > > > > > We need to disable VMX on all CPUs before stop cpu when OS panic, > > > otherwisewe risk hanging up the machine, because the CPU ignore INIT > > > signals when VMX is enabled. In kernel mainline this issue existence.

Re: [PATCH V4] x86: call smp vmxoff in smp stop

2017-04-19 Thread Ingo Molnar
* Paolo Bonzini wrote: > Ingo, can you put this in tip? > > Thanks, > > Paolo > > On 18/01/2017 12:32, Xishi Qiu wrote: > > From: Tiantian Feng > > > > We need to disable VMX on all CPUs before stop cpu when OS panic, > > otherwisewe risk hanging up the machine, because the CPU ignore INIT

Re: [PATCH V4] x86: call smp vmxoff in smp stop

2017-04-18 Thread Paolo Bonzini
Ingo, can you put this in tip? Thanks, Paolo On 18/01/2017 12:32, Xishi Qiu wrote: > From: Tiantian Feng > > We need to disable VMX on all CPUs before stop cpu when OS panic, > otherwisewe risk hanging up the machine, because the CPU ignore INIT > signals when VMX is enabled. In kernel mainlin

[PATCH V4] x86: call smp vmxoff in smp stop

2017-01-18 Thread Xishi Qiu
From: Tiantian Feng We need to disable VMX on all CPUs before stop cpu when OS panic, otherwisewe risk hanging up the machine, because the CPU ignore INIT signals when VMX is enabled. In kernel mainline this issue existence. Signed-off-by: Tiantian Feng Signed-off-by: Xishi Qiu --- arch/x86/k