linux-kernel - Re: [PATCH v8 10/26] arm64: kvm: Unmask PMR before entering guest

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Message-ID: <20190118162547.GI118707@arrakis.emea.arm.com>
Date:   Fri, 18 Jan 2019 16:25:47 +0000
From:   Catalin Marinas <catalin.marinas@....com>
To:     Julien Thierry <julien.thierry@....com>
Cc:     linux-arm-kernel@...ts.infradead.org, mark.rutland@....com,
        daniel.thompson@...aro.org, marc.zyngier@....com,
        will.deacon@....com, linux-kernel@...r.kernel.org,
        christoffer.dall@....com, james.morse@....com,
        joel@...lfernandes.org, kvmarm@...ts.cs.columbia.edu
Subject: Re: [PATCH v8 10/26] arm64: kvm: Unmask PMR before entering guest

On Tue, Jan 08, 2019 at 02:07:28PM +0000, Julien Thierry wrote:
> Interrupts masked by ICC_PMR_EL1 will not be signaled to the CPU. This
> means that hypervisor will not receive masked interrupts while running a
> guest.
> 
> Avoid this by making sure ICC_PMR_EL1 is unmasked when we enter a guest.
> 
> Signed-off-by: Julien Thierry <julien.thierry@....com>
> Cc: Christoffer Dall <christoffer.dall@....com>
> Cc: Marc Zyngier <marc.zyngier@....com>
> Cc: Catalin Marinas <catalin.marinas@....com>
> Cc: Will Deacon <will.deacon@....com>
> Cc: kvmarm@...ts.cs.columbia.edu

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