Re: [PATCH 3/3] KVM: SVM: allow to intercept all exceptions for debug

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Subject: Re: [PATCH 3/3] KVM: SVM: allow to intercept all exceptions for debug
From: Joerg Roedel <joro@xxxxxxxxxx>
Date: Thu, 18 Mar 2021 16:47:40 +0100
Cc: kvm@xxxxxxxxxxxxxxx, Vitaly Kuznetsov <vkuznets@xxxxxxxxxx>, linux-kernel@xxxxxxxxxxxxxxx, Thomas Gleixner <tglx@xxxxxxxxxxxxx>, Wanpeng Li <wanpengli@xxxxxxxxxxx>, Kieran Bingham <kbingham@xxxxxxxxxx>, Jessica Yu <jeyu@xxxxxxxxxx>, Jan Kiszka <jan.kiszka@xxxxxxxxxxx>, Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>, "maintainer:X86 ARCHITECTURE (32-BIT AND 64-BIT)" <x86@xxxxxxxxxx>, Sean Christopherson <seanjc@xxxxxxxxxx>, Jim Mattson <jmattson@xxxxxxxxxx>, Borislav Petkov <bp@xxxxxxxxx>, Stefano Garzarella <sgarzare@xxxxxxxxxx>, "H. Peter Anvin" <hpa@xxxxxxxxx>, Paolo Bonzini <pbonzini@xxxxxxxxxx>, Ingo Molnar <mingo@xxxxxxxxxx>, Borislav Petkov <bp@xxxxxxx>
In-reply-to: <8ba6676471dc8c8219e35d6a1695febaea20bb0b.camel@redhat.com>
References: <20210315221020.661693-1-mlevitsk@redhat.com> <20210315221020.661693-4-mlevitsk@redhat.com> <YFBtI55sVzIJ15U+@8bytes.org> <4116d6ce75a85faccfe7a2b3967528f0561974ae.camel@redhat.com> <YFMbLWLlGgbOJuN/@8bytes.org> <8ba6676471dc8c8219e35d6a1695febaea20bb0b.camel@redhat.com>

On Thu, Mar 18, 2021 at 11:24:25AM +0200, Maxim Levitsky wrote:
> But again this is a debug feature, and it is intended to allow the user
> to shoot himself in the foot.

And one can't debug SEV-ES guests with it, so what is the point of
enabling it for them too?

Regards,

	Joerg

Follow-Ups:
- Re: [PATCH 3/3] KVM: SVM: allow to intercept all exceptions for debug
  - From: Sean Christopherson

References:
- [PATCH 0/3] KVM: my debug patch queue
  - From: Maxim Levitsky
- [PATCH 3/3] KVM: SVM: allow to intercept all exceptions for debug
  - From: Maxim Levitsky
- Re: [PATCH 3/3] KVM: SVM: allow to intercept all exceptions for debug
  - From: Joerg Roedel
- Re: [PATCH 3/3] KVM: SVM: allow to intercept all exceptions for debug
  - From: Maxim Levitsky
- Re: [PATCH 3/3] KVM: SVM: allow to intercept all exceptions for debug
  - From: Joerg Roedel
- Re: [PATCH 3/3] KVM: SVM: allow to intercept all exceptions for debug
  - From: Maxim Levitsky

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