linux-kernel - Re: [PATCH v4 21/23] arm64: hw_breakpoint: Allow EL2 breakpoints if running in HYP

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Message-ID: <20160215102230.GC13683@e104818-lin.cambridge.arm.com>
Date:	Mon, 15 Feb 2016 10:22:30 +0000
From:	Catalin Marinas <catalin.marinas@....com>
To:	Marc Zyngier <marc.zyngier@....com>
Cc:	Will Deacon <will.deacon@....com>,
	Mark Rutland <mark.rutland@....com>,
	Christoffer Dall <christoffer.dall@...aro.org>,
	kvmarm@...ts.cs.columbia.edu, linux-kernel@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org, kvm@...r.kernel.org
Subject: Re: [PATCH v4 21/23] arm64: hw_breakpoint: Allow EL2 breakpoints if
 running in HYP

On Thu, Feb 11, 2016 at 06:40:02PM +0000, Marc Zyngier wrote:
> With VHE, we place kernel {watch,break}-points at EL2 to get things
> like kgdb and "perf -e mem:..." working.
> 
> This requires a bit of repainting in the low-level encore/decode,
> but is otherwise pretty simple.
> 
> Signed-off-by: Marc Zyngier <marc.zyngier@....com>

To the best of my knowledge, this patch is fine ;)

Reviewed-by: Catalin Marinas <catalin.marinas@....com>