Re: x86: Don't report guest userspace emulation error to userspace, why ?

2015-12-10 Thread Bandan Das
Paolo Bonzini writes: > On 10/12/2015 18:58, Bandan Das wrote: >>> > Allowing userspace to stop the guest with an emulation failure is a >> This one I don't :) Userspace started the guest after all, there are other >> ways for it to kill the guest if it wanted to. > > I mean

Re: x86: Don't report guest userspace emulation error to userspace, why ?

2015-12-10 Thread Paolo Bonzini
> Paolo Bonzini writes: > > On 10/12/2015 18:58, Bandan Das wrote: > >>> > Allowing userspace to stop the guest with an emulation failure is a > >> This one I don't :) Userspace started the guest after all, there are other > >> ways for it to kill the guest if it wanted to. >

Re: x86: Don't report guest userspace emulation error to userspace, why ?

2015-12-10 Thread Paolo Bonzini
On 09/12/2015 23:18, Bandan Das wrote: > Commit a2b9e6c1a35afcc09: > > KVM: x86: Don't report guest userspace emulation error to userspace > > Commit fc3a9157d314 ("KVM: X86: Don't report L2 emulation failures to > user-space") disabled the reporting of L2 (nested guest)

Re: x86: Don't report guest userspace emulation error to userspace, why ?

2015-12-10 Thread Bandan Das
Paolo Bonzini writes: >> Paolo Bonzini writes: >> > On 10/12/2015 18:58, Bandan Das wrote: >> >>> > Allowing userspace to stop the guest with an emulation failure is a >> >> This one I don't :) Userspace started the guest after all, there are other >>

Re: x86: Don't report guest userspace emulation error to userspace, why ?

2015-12-10 Thread Bandan Das
Paolo Bonzini writes: > On 09/12/2015 23:18, Bandan Das wrote: >> Commit a2b9e6c1a35afcc09: >> >> KVM: x86: Don't report guest userspace emulation error to userspace >> >> Commit fc3a9157d314 ("KVM: X86: Don't report L2 emulation failures to >> user-space")

Re: x86: Don't report guest userspace emulation error to userspace, why ?

2015-12-10 Thread Paolo Bonzini
On 10/12/2015 18:58, Bandan Das wrote: >> > Allowing userspace to stop the guest with an emulation failure is a > This one I don't :) Userspace started the guest after all, there are other > ways for it to kill the guest if it wanted to. I mean allowing guest userspace to stop the guest. Paolo

x86: Don't report guest userspace emulation error to userspace, why ?

2015-12-09 Thread Bandan Das
Commit a2b9e6c1a35afcc09: KVM: x86: Don't report guest userspace emulation error to userspace Commit fc3a9157d314 ("KVM: X86: Don't report L2 emulation failures to user-space") disabled the reporting of L2 (nested guest) emulation failures to userspace due to race-condition