From: fche@redhat.com (Frank Ch. Eigler)
To: William Cohen <wcohen@redhat.com>
Cc: SystemTAP <systemtap@sources.redhat.com>
Subject: Re: Best way getting guest_rip from newer versions of kernel.trace("kvm_exit")?
Date: Fri, 23 Sep 2011 19:17:00 -0000 [thread overview]
Message-ID: <y0m4o03t6el.fsf@fche.csb> (raw)
In-Reply-To: <4E7CAD85.3080902@redhat.com> (William Cohen's message of "Fri, 23 Sep 2011 12:02:13 -0400")
William Cohen <wcohen@redhat.com> writes:
> [...]
> In Fedora-15 kernel:
> kernel.trace("kvm_exit") $exit_reason:unsigned int $vcpu:struct kvm_vcpu* $isa:u32
> [...]
We almost certainly wouldn't want to call kvm_rip_read(), even if we could.
How about ...
probe kvm.exit = kernel.trace("kvm_exit") {
if (@defined($guest_rip)) guest_rip = $guest_rip
else if (@defined($vcpu)) guest_rip = $vcpu->arch.regs[%{VCPU_REGS_RIP%}]
...
}
- FChE
prev parent reply other threads:[~2011-09-23 19:17 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-09-23 16:02 William Cohen
2011-09-23 19:17 ` Frank Ch. Eigler [this message]
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