linux-kernel - Re: (subset) [PATCH v5 00/19] coresight: Add support for ETE and TRBE

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Date:   Tue, 23 Mar 2021 16:33:53 +0000
From:   Marc Zyngier <maz@...nel.org>
To:     linux-arm-kernel@...ts.infradead.org,
        Suzuki K Poulose <suzuki.poulose@....com>
Cc:     mike.leach@...aro.org, Peter Zilstra <peterz@...radead.org>,
        Linu Cherian <lcherian@...vell.com>,
        mathieu.poirier@...aro.org, anshuman.khandual@....com,
        Will Deacon <will@...nel.org>, leo.yan@...aro.org,
        coresight@...ts.linaro.org, linux-kernel@...r.kernel.org,
        catalin.marinas@....com
Subject: Re: (subset) [PATCH v5 00/19] coresight: Add support for ETE and TRBE

On Tue, 23 Mar 2021 12:06:28 +0000, Suzuki K Poulose wrote:
> This series enables future IP trace features Embedded Trace Extension
> (ETE) and Trace Buffer Extension (TRBE). This series applies on
> v5.12-rc4 + some patches queued. A standalone tree is also available here [0].
> The queued patches (almost there) are included in this posting for
> the sake of constructing a tree from the posting.
> 
> ETE is the PE (CPU) trace unit for CPUs, implementing future
> architecture extensions. ETE overlaps with the ETMv4 architecture, with
> additions to support the newer architecture features and some restrictions
> on the supported features w.r.t ETMv4. The ETE support is added by extending
> the ETMv4 driver to recognise the ETE and handle the features as exposed by
> the TRCIDRx registers. ETE only supports system instructions access from the
> host CPU. The ETE could be integrated with a TRBE (see below), or with
> the legacy CoreSight trace bus (e.g, ETRs). Thus the ETE follows same
> firmware description as the ETMs and requires a node per instance.
> 
> [...]

Applied to fixes, thanks!

[02/19] kvm: arm64: Disable guest access to trace filter controls
        commit: eed31b2332ed02ffb368eba7654350746185e6e7

Cheers,

	M.
-- 
Without deviation from the norm, progress is not possible.