From: James Morse <james.morse@arm.com>
To: Marc Zyngier <marc.zyngier@arm.com>
Cc: Russell King <linux@arm.linux.org.uk>,
Ard Biesheuvel <ard.biesheuvel@linaro.org>,
Catalin Marinas <catalin.marinas@arm.com>,
cdall@linaro.org, linux-arm-kernel@lists.infradead.org,
kvm@vger.kernel.org, kvmarm@lists.cs.columbia.edu
Subject: Re: [PATCH v3 04/25] arm64: KVM: Allow the main HYP code to use the init hyp stub implementation
Date: Mon, 13 Mar 2017 17:59:11 +0000 [thread overview]
Message-ID: <58C6DDEF.3080100@arm.com> (raw)
In-Reply-To: <20170306142458.8875-5-marc.zyngier@arm.com>
On 06/03/17 14:24, Marc Zyngier wrote:
> We now have a full hyp-stub implementation in the KVM init code,
> but the main KVM code only supports HVC_GET_VECTORS, which is not
> enough.
>
> Instead of reinventing the wheel, let's reuse the init implementation
> by branching to the idmap page when called with a hyp-stub hypercall.
Since your merged page tables change this isn't as scary as it looks, as the
idmap is always present.
Reviewed-by: James Morse <james.morse@arm.com>
Thanks,
James
WARNING: multiple messages have this Message-ID (diff)
From: james.morse@arm.com (James Morse)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH v3 04/25] arm64: KVM: Allow the main HYP code to use the init hyp stub implementation
Date: Mon, 13 Mar 2017 17:59:11 +0000 [thread overview]
Message-ID: <58C6DDEF.3080100@arm.com> (raw)
In-Reply-To: <20170306142458.8875-5-marc.zyngier@arm.com>
On 06/03/17 14:24, Marc Zyngier wrote:
> We now have a full hyp-stub implementation in the KVM init code,
> but the main KVM code only supports HVC_GET_VECTORS, which is not
> enough.
>
> Instead of reinventing the wheel, let's reuse the init implementation
> by branching to the idmap page when called with a hyp-stub hypercall.
Since your merged page tables change this isn't as scary as it looks, as the
idmap is always present.
Reviewed-by: James Morse <james.morse@arm.com>
Thanks,
James
next prev parent reply other threads:[~2017-03-13 17:59 UTC|newest]
Thread overview: 92+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-03-06 14:24 [PATCH v3 00/25] arm/arm64: KVM: Rework the hyp-stub API Marc Zyngier
2017-03-06 14:24 ` Marc Zyngier
2017-03-06 14:24 ` [PATCH v3 01/25] arm64: hyp-stub: Implement HVC_RESET_VECTORS stub hypercall Marc Zyngier
2017-03-06 14:24 ` Marc Zyngier
2017-03-13 17:53 ` James Morse
2017-03-13 17:53 ` James Morse
2017-03-21 17:04 ` Catalin Marinas
2017-03-21 17:04 ` Catalin Marinas
2017-03-21 17:25 ` James Morse
2017-03-21 17:25 ` James Morse
2017-03-21 17:37 ` Marc Zyngier
2017-03-21 17:37 ` Marc Zyngier
2017-03-21 17:41 ` James Morse
2017-03-21 17:41 ` James Morse
2017-03-21 18:36 ` Marc Zyngier
2017-03-21 18:36 ` Marc Zyngier
2017-03-21 17:26 ` Marc Zyngier
2017-03-21 17:26 ` Marc Zyngier
2017-03-06 14:24 ` [PATCH v3 02/25] arm64: KVM: " Marc Zyngier
2017-03-06 14:24 ` Marc Zyngier
2017-03-13 17:53 ` James Morse
2017-03-13 17:53 ` James Morse
2017-03-13 18:03 ` Marc Zyngier
2017-03-13 18:03 ` Marc Zyngier
2017-03-13 18:03 ` Marc Zyngier
2017-03-06 14:24 ` [PATCH v3 03/25] arm64: KVM: Implement HVC_GET_VECTORS in the init code Marc Zyngier
2017-03-06 14:24 ` Marc Zyngier
2017-03-13 17:54 ` James Morse
2017-03-13 17:54 ` James Morse
2017-03-06 14:24 ` [PATCH v3 04/25] arm64: KVM: Allow the main HYP code to use the init hyp stub implementation Marc Zyngier
2017-03-06 14:24 ` Marc Zyngier
2017-03-13 17:59 ` James Morse [this message]
2017-03-13 17:59 ` James Morse
2017-03-06 14:24 ` [PATCH v3 05/25] arm64: KVM: Convert __cpu_reset_hyp_mode to using __hyp_reset_vectors Marc Zyngier
2017-03-06 14:24 ` Marc Zyngier
2017-03-13 17:59 ` James Morse
2017-03-13 17:59 ` James Morse
2017-03-06 14:24 ` [PATCH v3 06/25] arm64: KVM: Implement HVC_SOFT_RESTART in the init code Marc Zyngier
2017-03-06 14:24 ` Marc Zyngier
2017-03-06 14:24 ` [PATCH v3 07/25] ARM: hyp-stub: improve ABI Marc Zyngier
2017-03-06 14:24 ` Marc Zyngier
2017-03-06 14:24 ` [PATCH v3 08/25] ARM: soft-reboot into same mode that we entered the kernel Marc Zyngier
2017-03-06 14:24 ` Marc Zyngier
2017-03-06 14:24 ` [PATCH v3 09/25] ARM: KVM: Convert KVM to use HVC_GET_VECTORS Marc Zyngier
2017-03-06 14:24 ` Marc Zyngier
2017-03-06 14:24 ` [PATCH v3 10/25] ARM: Update cpu_v7_reset documentation Marc Zyngier
2017-03-06 14:24 ` Marc Zyngier
2017-03-06 14:24 ` [PATCH v3 11/25] ARM: hyp-stub: Use r1 for the soft-restart address Marc Zyngier
2017-03-06 14:24 ` Marc Zyngier
2017-03-06 14:24 ` [PATCH v3 12/25] ARM: Expose the VA/IDMAP offset Marc Zyngier
2017-03-06 14:24 ` Marc Zyngier
2017-03-06 14:24 ` [PATCH v3 13/25] ARM: hyp-stub: Implement HVC_RESET_VECTORS stub hypercall Marc Zyngier
2017-03-06 14:24 ` Marc Zyngier
2017-03-06 14:24 ` [PATCH v3 14/25] ARM: KVM: " Marc Zyngier
2017-03-06 14:24 ` Marc Zyngier
2017-03-06 14:24 ` [PATCH v3 15/25] ARM: KVM: Implement HVC_GET_VECTORS in the init code Marc Zyngier
2017-03-06 14:24 ` Marc Zyngier
2017-03-06 14:24 ` [PATCH v3 16/25] ARM: KVM: Allow the main HYP code to use the init hyp stub implementation Marc Zyngier
2017-03-06 14:24 ` Marc Zyngier
2017-03-06 14:24 ` [PATCH v3 17/25] ARM: KVM: Convert __cpu_reset_hyp_mode to using __hyp_reset_vectors Marc Zyngier
2017-03-06 14:24 ` Marc Zyngier
2017-03-06 14:24 ` [PATCH v3 18/25] ARM: KVM: Implement HVC_SOFT_RESTART in the init code Marc Zyngier
2017-03-06 14:24 ` Marc Zyngier
2017-03-06 14:24 ` [PATCH v3 19/25] arm/arm64: KVM: Use __hyp_reset_vectors() directly Marc Zyngier
2017-03-06 14:24 ` Marc Zyngier
2017-03-06 14:24 ` [PATCH v3 20/25] arm/arm64: KVM: Remove kvm_get_idmap_start Marc Zyngier
2017-03-06 14:24 ` Marc Zyngier
2017-03-06 14:24 ` [PATCH v3 21/25] arm/arm64: KVM: Use HVC_RESET_VECTORS to reinit HYP mode Marc Zyngier
2017-03-06 14:24 ` Marc Zyngier
2017-03-06 14:24 ` [PATCH v3 22/25] ARM: decompressor: Remove __hyp_get_vectors usage Marc Zyngier
2017-03-06 14:24 ` Marc Zyngier
2017-03-06 14:24 ` [PATCH v3 23/25] ARM: hyp-stub/KVM: Kill __hyp_get_vectors Marc Zyngier
2017-03-06 14:24 ` Marc Zyngier
2017-03-06 14:24 ` [PATCH v3 24/25] arm64: " Marc Zyngier
2017-03-06 14:24 ` Marc Zyngier
2017-03-06 14:24 ` [PATCH v3 25/25] arm/arm64: Add hyp-stub API documentation Marc Zyngier
2017-03-06 14:24 ` Marc Zyngier
2017-03-14 13:38 ` [PATCH v3 00/25] arm/arm64: KVM: Rework the hyp-stub API Keerthy
2017-03-14 13:38 ` Keerthy
2017-03-14 13:38 ` Keerthy
2017-03-14 13:55 ` Marc Zyngier
2017-03-14 13:55 ` Marc Zyngier
2017-03-14 14:25 ` Nishanth Menon
2017-03-14 14:25 ` Nishanth Menon
2017-03-15 2:25 ` Keerthy
2017-03-15 2:25 ` Keerthy
2017-03-14 16:05 ` Russell King - ARM Linux
2017-03-14 16:05 ` Russell King - ARM Linux
2017-03-14 16:09 ` Marc Zyngier
2017-03-14 16:09 ` Marc Zyngier
2017-03-17 11:43 ` Russell King - ARM Linux
2017-03-17 11:43 ` Russell King - ARM Linux
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