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Re: [PATCH v1 7/7] x86/vmx: switch IPT MSRs on vmentry/vmexit
- To: Michał Leszczyński <michal.leszczynski@xxxxxxx>
- From: Roger Pau Monné <roger.pau@xxxxxxxxxx>
- Date: Tue, 16 Jun 2020 19:38:57 +0200
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- Cc: Kevin Tian <kevin.tian@xxxxxxxxx>, Jun Nakajima <jun.nakajima@xxxxxxxxx>, Wei Liu <wl@xxxxxxx>, Andrew Cooper <andrew.cooper3@xxxxxxxxxx>, Jan Beulich <jbeulich@xxxxxxxx>, Xen-devel <xen-devel@xxxxxxxxxxxxxxxxxxxx>
- Delivery-date: Tue, 16 Jun 2020 17:39:16 +0000
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On Tue, Jun 16, 2020 at 05:24:11PM +0200, Michał Leszczyński wrote:
> Enable IPT when entering the VM and disable it on vmexit.
> Register state is persisted using vCPU ipt_state structure.
Shouldn't this be better done using Intel MSR load lists?
That seems to be what the SDM recommends for tracing VM events.
Thanks, Roger.
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