From: Tamas K Lengyel <tamas.lengyel@zentific.com>
To: Jan Beulich <JBeulich@suse.com>
Cc: Ian Campbell <ian.campbell@citrix.com>,
Razvan Cojocaru <rcojocaru@bitdefender.com>,
Tim Deegan <tim@xen.org>, Julien Grall <julien.grall@linaro.org>,
Ian Jackson <ian.jackson@eu.citrix.com>,
"xen-devel@lists.xen.org" <xen-devel@lists.xen.org>,
Stefano Stabellini <stefano.stabellini@citrix.com>,
Andres Lagar-Cavilla <andres@lagarcavilla.org>,
Daniel De Graaf <dgdegra@tycho.nsa.gov>,
Tamas K Lengyel <tklengyel@sec.in.tum.de>
Subject: Re: [PATCH for-4.5 v8 06/19] xen: Relocate mem_event_op domctl and access_op memop into common.
Date: Tue, 23 Sep 2014 16:13:05 +0200 [thread overview]
Message-ID: <CAErYnsiSq7Xwf77vjiMB6DFMvbffYoG6+PbP3-tOXvRmFKMiOA@mail.gmail.com> (raw)
In-Reply-To: <54219AD70200007800037C02@mail.emea.novell.com>
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On Tue, Sep 23, 2014 at 4:07 PM, Jan Beulich <JBeulich@suse.com> wrote:
> >>> On 23.09.14 at 16:00, <rcojocaru@bitdefender.com> wrote:
> > On 09/23/2014 04:32 PM, Jan Beulich wrote:
> >>>>> On 23.09.14 at 15:14, <tklengyel@sec.in.tum.de> wrote:
> >>> --- a/xen/common/mem_event.c
> >>> +++ b/xen/common/mem_event.c
> >>> @@ -623,12 +623,9 @@ int mem_event_domctl(struct domain *d,
> >>> xen_domctl_mem_event_op_t *mec,
> >>> HVM_PARAM_ACCESS_RING_PFN,
> >>> mem_access_notification);
> >>>
> >>> - if ( mec->op != XEN_DOMCTL_MEM_EVENT_OP_ACCESS_ENABLE &&
> >>> - rc == 0 && hvm_funcs.enable_msr_exit_interception )
> >>> - {
> >>> - d->arch.hvm_domain.introspection_enabled = 1;
> >>> - hvm_funcs.enable_msr_exit_interception(d);
> >>> - }
> >>> + if ( !rc && mec->op !=
> XEN_DOMCTL_MEM_EVENT_OP_ACCESS_ENABLE )
> >>> + p2m_enable_msr_exit_interception(d);
> >>
> >> The name is clearly not suitable for an abstraction - there's certainly
> >> not going to be MSRs on each and every CPU architecture. Maybe
> >> consult with Razvan on an agreeable more suitable name.
> >
> > P2m_set_up_introspection() perhaps? With the MSR HVM code where
> > applicable, nothing (or something else) where not? Would this be too
> > generic?
>
> I'd be fine with that name provided the != above gets converted
> to a == XEN_DOMCTL_MEM_EVENT_OP_ACCESS_ENABLE_INTROSPECTION.
>
> Jan
>
My problem with this name is that introspection is really way too generic
of a term. You can certainly do all sorts of introspection without having
this feature or using this feature.. Ultimately its just a name so if this
becomes Xen's terminology to mean this particular feature I'm fine with it
but that's going to be confusing when other people talk about
'introspection'.
Tamas
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next prev parent reply other threads:[~2014-09-23 14:13 UTC|newest]
Thread overview: 58+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-09-23 13:14 [PATCH for-4.5 v8 00/19] Mem_event and mem_access for ARM Tamas K Lengyel
2014-09-23 13:14 ` [PATCH for-4.5 v8 01/19] xen: Relocate mem_access and mem_event into common Tamas K Lengyel
2014-09-23 13:14 ` [PATCH for-4.5 v8 02/19] xen: Relocate struct npfec definition " Tamas K Lengyel
2014-09-23 13:14 ` [PATCH for-4.5 v8 03/19] xen: Relocate p2m_access_t into common and swap the order Tamas K Lengyel
2014-09-23 13:14 ` [PATCH for-4.5 v8 04/19] xen: Relocate p2m_mem_access_resume to mem_access common Tamas K Lengyel
2014-09-23 13:28 ` Jan Beulich
2014-09-23 14:04 ` Tamas K Lengyel
2014-09-23 14:08 ` Jan Beulich
2014-09-23 14:15 ` Tamas K Lengyel
2014-09-23 15:02 ` Jan Beulich
2014-09-23 13:14 ` [PATCH for-4.5 v8 05/19] xen: Relocate set_access_required domctl into common Tamas K Lengyel
2014-09-24 14:18 ` Julien Grall
2014-09-24 15:05 ` Tamas K Lengyel
2014-09-23 13:14 ` [PATCH for-4.5 v8 06/19] xen: Relocate mem_event_op domctl and access_op memop " Tamas K Lengyel
2014-09-23 13:32 ` Jan Beulich
2014-09-23 14:00 ` Razvan Cojocaru
2014-09-23 14:07 ` Jan Beulich
2014-09-23 14:13 ` Tamas K Lengyel [this message]
2014-09-23 14:23 ` Razvan Cojocaru
2014-09-23 14:28 ` Tamas K Lengyel
2014-09-23 14:19 ` Razvan Cojocaru
2014-09-23 14:08 ` Tamas K Lengyel
2014-09-23 13:14 ` [PATCH for-4.5 v8 07/19] x86/p2m: Typo fix for spelling ambiguous Tamas K Lengyel
2014-09-23 13:14 ` [PATCH for-4.5 v8 08/19] xen/mem_event: Clean out superfluous white-spaces Tamas K Lengyel
2014-09-23 13:14 ` [PATCH for-4.5 v8 09/19] xen/mem_event: Relax error condition on debug builds Tamas K Lengyel
2014-09-23 13:14 ` [PATCH for-4.5 v8 10/19] xen/mem_event: Abstract architecture specific sanity checks Tamas K Lengyel
2014-09-23 13:14 ` [PATCH for-4.5 v8 11/19] xen/mem_access: Abstract architecture specific sanity check Tamas K Lengyel
2014-09-23 13:14 ` [PATCH for-4.5 v8 12/19] xen/arm: p2m changes for mem_access support Tamas K Lengyel
2014-09-24 14:40 ` Ian Campbell
2014-09-24 16:58 ` Tamas K Lengyel
2014-09-24 17:14 ` Razvan Cojocaru
2014-09-24 14:43 ` Julien Grall
2014-09-24 16:48 ` Tamas K Lengyel
2014-09-23 13:14 ` [PATCH for-4.5 v8 13/19] xen/arm: Implement domain_get_maximum_gpfn Tamas K Lengyel
2014-09-23 13:14 ` [PATCH for-4.5 v8 14/19] xen/arm: Add p2m_set_permission and p2m_shatter_page helpers Tamas K Lengyel
2014-09-24 14:48 ` Julien Grall
2014-09-23 13:14 ` [PATCH for-4.5 v8 15/19] xen/arm: Data abort exception (R/W) mem_events Tamas K Lengyel
2014-09-24 15:02 ` Ian Campbell
2014-09-24 16:17 ` Tamas K Lengyel
2014-09-24 15:35 ` Julien Grall
2014-09-24 16:27 ` Tamas K Lengyel
2014-09-24 16:51 ` Julien Grall
2014-09-24 17:13 ` Tamas K Lengyel
2014-09-24 20:52 ` Julien Grall
2014-09-24 21:24 ` Tamas K Lengyel
2014-09-24 22:07 ` Tamas K Lengyel
2014-09-23 13:14 ` [PATCH for-4.5 v8 16/19] xen/arm: Instruction prefetch abort (X) mem_event handling Tamas K Lengyel
2014-09-24 15:05 ` Ian Campbell
2014-09-24 17:04 ` Tamas K Lengyel
2014-09-24 15:41 ` Julien Grall
2014-09-24 17:08 ` Tamas K Lengyel
2014-09-23 13:14 ` [PATCH for-4.5 v8 17/19] xen/arm: Enable the compilation of mem_access and mem_event on ARM Tamas K Lengyel
2014-09-24 15:08 ` Ian Campbell
2014-09-24 15:42 ` Julien Grall
2014-09-23 13:14 ` [PATCH for-4.5 v8 18/19] tools/libxc: Allocate magic page for mem access " Tamas K Lengyel
2014-09-23 13:14 ` [PATCH for-4.5 v8 19/19] tools/tests: Enable xen-access " Tamas K Lengyel
2014-09-24 15:12 ` Ian Campbell
2014-09-24 16:05 ` Tamas K Lengyel
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