From: Marc Zyngier <marc.zyngier@arm.com>
To: James Morse <james.morse@arm.com>, kvmarm@lists.cs.columbia.edu
Cc: linux-arm-kernel@lists.infradead.org
Subject: Re: [PATCH v2] arm64: KVM: Register CPU notifiers when the kernel runs at HYP
Date: Thu, 31 Mar 2016 09:15:15 +0100 [thread overview]
Message-ID: <56FCDC93.3070304@arm.com> (raw)
In-Reply-To: <1459359184-15601-1-git-send-email-james.morse@arm.com>
On 30/03/16 18:33, James Morse wrote:
> When the kernel is running at EL2, it doesn't need init_hyp_mode() to
> configure page tables for HYP. This function also registers the CPU
> hotplug and lower power notifiers that cause HYP to be re-initialised
> after the CPU has been reset.
>
> To avoid losing the register state that controls stage2 translation, move
> the registering of these notifiers into init_subsystems(), and add a
> is_kernel_in_hyp_mode() path to each callback.
>
> Fixes: 1e947bad0b6 ("arm64: KVM: Skip HYP setup when already running in HYP")
> Signed-off-by: James Morse <james.morse@arm.com>
Acked-by: Marc Zyngier <marc.zyngier@arm.com>
M.
--
Jazz is not dead. It just smells funny...
next prev parent reply other threads:[~2016-03-31 8:14 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-03-30 17:33 [PATCH v2] arm64: KVM: Register CPU notifiers when the kernel runs at HYP James Morse
2016-03-31 8:15 ` Marc Zyngier [this message]
2016-03-31 8:26 ` Christoffer Dall
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