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RE: [patch v3 16/16] btrace, x86: restrict to Atom
- From: "Metzger, Markus T" <markus dot t dot metzger at intel dot com>
- To: Mark Kettenis <mark dot kettenis at xs4all dot nl>
- Cc: "gdb-patches at sourceware dot org" <gdb-patches at sourceware dot org>, "markus dot t dot metzger at gmail dot com" <markus dot t dot metzger at gmail dot com>
- Date: Thu, 4 Oct 2012 07:50:06 +0000
- Subject: RE: [patch v3 16/16] btrace, x86: restrict to Atom
- References: <1344949171-9545-1-git-send-email-markus.t.metzger@intel.com> <1344949171-9545-17-git-send-email-markus.t.metzger@intel.com> <201208141327.q7EDR7TC017727@glazunov.sibelius.xs4all.nl> <A78C989F6D9628469189715575E55B2307ACF558@IRSMSX102.ger.corp.intel.com> <A78C989F6D9628469189715575E55B2307AEDD71@IRSMSX102.ger.corp.intel.com> <201209280239.q8S2ddal001019@glazunov.sibelius.xs4all.nl> <A78C989F6D9628469189715575E55B2307AF196B@IRSMSX102.ger.corp.intel.com> <201210011924.q91JO8Sp010508@glazunov.sibelius.xs4all.nl>
> -----Original Message-----
> From: Mark Kettenis [mailto:mark.kettenis@xs4all.nl]
> Sent: Monday, October 01, 2012 9:24 PM
> To: Metzger, Markus T
[...]
> > The cpuid check is simple and reliable. Anything else will be more
> > complicated and also less straight-forward to understand.
>
> But what if btrace support shows up for other CPUs, or if a next
> generation Atom shows up that has a different cpuid?
For every new cpu that supports branch tracing, we will test it and send out a patch adding the new cpuid. This will be part of the general enabling for new cpus, e.g. new instructions or registers.
Regards,
Markus.
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