From: Alexander Shishkin <alexander.shishkin@linux.intel.com>
To: Luwei Kang <luwei.kang@intel.com>, kvm-pmu@eclists.intel.com
Cc: ak@linux.intel.com, kan.liang@linux.intel.com,
Luwei Kang <luwei.kang@intel.com>,
peterz@infradead.org, linux-kernel@vger.kernel.org,
alexander.shishkin@linux.intel.com
Subject: Re: [PATCH v1 0/4] Enable PEBS when only have PEBS via PT w/o DS
Date: Fri, 15 Nov 2019 10:38:08 +0200 [thread overview]
Message-ID: <87h835edqn.fsf@ashishki-desk.ger.corp.intel.com> (raw)
In-Reply-To: <1573672574-25247-1-git-send-email-luwei.kang@intel.com>
You forgot to CC Peter and LKML.
Luwei Kang <luwei.kang@intel.com> writes:
> This patchset is purely perf event system changes that to enable the
> PEBS when the system only supports PEBS via Intel PT w/o DS. Currently,
> there don't have such hardware which only supports PEBS via PT w/o DS
> but it is possible in KVM guest. In Tremont Atom platforms, PEBS via
> PT is the only way to enabled PEBS in KVM guest.
I don't understand what this says. If PEBS-via-PT is available and DS is
not available, what happens and why?
Regards,
--
Alex
next parent reply other threads:[~2019-11-15 8:38 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <1573672574-25247-1-git-send-email-luwei.kang@intel.com>
2019-11-15 8:38 ` Alexander Shishkin [this message]
2019-11-17 11:51 ` Kang, Luwei
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