From: James Morse <james.morse@arm.com>
To: AKASHI Takahiro <takahiro.akashi@linaro.org>
Cc: mark.rutland@arm.com, geoff@infradead.org,
catalin.marinas@arm.com, will.deacon@arm.com,
marc.zyngier@arm.com, broonie@kernel.org,
david.griego@linaro.org, kexec@lists.infradead.org,
christoffer.dall@linaro.org,
linux-arm-kernel@lists.infradead.org
Subject: Re: [PATCH 2/2] fixup! arm64: kvm: allows kvm cpu hotplug
Date: Tue, 20 Oct 2015 17:22:04 +0100 [thread overview]
Message-ID: <56266A2C.7000005@arm.com> (raw)
In-Reply-To: <1445327907-23274-3-git-send-email-takahiro.akashi@linaro.org>
On 20/10/15 08:58, AKASHI Takahiro wrote:
> Without this patch, kvm cannot start a guest when cpuidle is enabled
> if the hardware does not retain cpu state (EL2) in idle state.
>
> This patch re-initailizes EL2 state at CPU_PM_EXIT by calling
> kvm_arch_hardware_enable() if and only if kvm has been initialized
> before CPU_PM_ENTER, that is, if any vcpus have been created.
>
> Signed-off-by: AKASHI Takahiro <takahiro.akashi@linaro.org>
This solves my issue with the v5 version here [0].
Tested-By: James Morse <james.morse@arm.com>
Thanks!
James
[0] https://lists.linaro.org/pipermail/linaro-kernel/2015-May/021575.html
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WARNING: multiple messages have this Message-ID (diff)
From: james.morse@arm.com (James Morse)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH 2/2] fixup! arm64: kvm: allows kvm cpu hotplug
Date: Tue, 20 Oct 2015 17:22:04 +0100 [thread overview]
Message-ID: <56266A2C.7000005@arm.com> (raw)
In-Reply-To: <1445327907-23274-3-git-send-email-takahiro.akashi@linaro.org>
On 20/10/15 08:58, AKASHI Takahiro wrote:
> Without this patch, kvm cannot start a guest when cpuidle is enabled
> if the hardware does not retain cpu state (EL2) in idle state.
>
> This patch re-initailizes EL2 state at CPU_PM_EXIT by calling
> kvm_arch_hardware_enable() if and only if kvm has been initialized
> before CPU_PM_ENTER, that is, if any vcpus have been created.
>
> Signed-off-by: AKASHI Takahiro <takahiro.akashi@linaro.org>
This solves my issue with the v5 version here [0].
Tested-By: James Morse <james.morse@arm.com>
Thanks!
James
[0] https://lists.linaro.org/pipermail/linaro-kernel/2015-May/021575.html
next prev parent reply other threads:[~2015-10-20 16:22 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-10-20 7:58 [PATCH 0/2] arm64: kexec/kdump fixes for v10 AKASHI Takahiro
2015-10-20 7:58 ` AKASHI Takahiro
2015-10-20 7:58 ` [PATCH 1/2] fixup! arm64: kdump: implement machine_crash_shutdown() AKASHI Takahiro
2015-10-20 7:58 ` AKASHI Takahiro
2015-10-20 7:58 ` [PATCH 2/2] fixup! arm64: kvm: allows kvm cpu hotplug AKASHI Takahiro
2015-10-20 7:58 ` AKASHI Takahiro
2015-10-20 16:22 ` James Morse [this message]
2015-10-20 16:22 ` James Morse
2015-10-20 19:05 ` [PATCH 0/2] arm64: kexec/kdump fixes for v10 Geoff Levand
2015-10-20 19:05 ` Geoff Levand
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