From: cdall@linaro.org (Christoffer Dall)
To: linux-arm-kernel@lists.infradead.org
Subject: [RESEND PATCH 0/2] arm/arm64: kvm: Disable branch profiling in HYP code
Date: Sat, 21 Oct 2017 17:04:29 +0200 [thread overview]
Message-ID: <20171021150429.GC12618@cbox> (raw)
In-Reply-To: <1508499257-10014-1-git-send-email-julien.thierry@arm.com>
On Fri, Oct 20, 2017 at 12:34:15PM +0100, Julien Thierry wrote:
> [Resending for Christoffer and adding kvmarm to recipients]
>
> Hi,
>
> When enabling branch profiling, a lockup occurs at boot time, after
> displaying: "kvm [1]: Hyp mode initialized successfully"
>
> The issue is caused by the Hyp code getting instrumented and trying to
> access unmapped code or data, which happens when trying to initialize EL2.
>
> So it also seems like KVM is misleadingly announcing it was initialized and
> yet gets stuck during initialization.
>
> * First patch deals with printing the initialization message once KVM has
> fully initialized Hyp mode
> * Second patch actually disables branch profiling instrumentation in Hyp
> code
Applied, thanks.
-Christoffer
prev parent reply other threads:[~2017-10-21 15:04 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-10-20 11:34 [RESEND PATCH 0/2] arm/arm64: kvm: Disable branch profiling in HYP code Julien Thierry
2017-10-20 11:34 ` [RESEND PATCH 1/2] arm/arm64: kvm: Move initialization completion message Julien Thierry
2017-10-20 11:34 ` [RESEND PATCH 2/2] arm/arm64: kvm: Disable branch profiling in HYP code Julien Thierry
2017-10-21 15:04 ` Christoffer Dall [this message]
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