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From: Quentin Perret <qperret@google.com>
To: Marc Zyngier <maz@kernel.org>
Cc: kvmarm@lists.cs.columbia.edu,
	linux-arm-kernel@lists.infradead.org, kvm@vger.kernel.org,
	dave.martin@arm.com, daniel.kiss@arm.com,
	Will Deacon <will@kernel.org>,
	Catalin Marinas <catalin.marinas@arm.com>,
	James Morse <james.morse@arm.com>,
	Julien Thierry <julien.thierry.kdev@gmail.com>,
	Suzuki K Poulose <suzuki.poulose@arm.com>,
	broonie@kernel.org, kernel-team@android.com
Subject: Re: [PATCH 01/10] KVM: arm64: Provide KVM's own save/restore SVE primitives
Date: Tue, 16 Mar 2021 10:31:46 +0000	[thread overview]
Message-ID: <YFCJEgjUZ5cnq0AK@google.com> (raw)
In-Reply-To: <20210316101312.102925-2-maz@kernel.org>

On Tuesday 16 Mar 2021 at 10:13:03 (+0000), Marc Zyngier wrote:
> diff --git a/arch/arm64/kvm/hyp/fpsimd.S b/arch/arm64/kvm/hyp/fpsimd.S
> index 01f114aa47b0..e4010d1acb79 100644
> --- a/arch/arm64/kvm/hyp/fpsimd.S
> +++ b/arch/arm64/kvm/hyp/fpsimd.S
> @@ -19,3 +19,13 @@ SYM_FUNC_START(__fpsimd_restore_state)
>  	fpsimd_restore	x0, 1
>  	ret
>  SYM_FUNC_END(__fpsimd_restore_state)
> +
> +SYM_FUNC_START(__sve_restore_state)
> +	sve_load 0, x1, x2, 3, x4
> +	ret
> +SYM_FUNC_END(__sve_restore_state)

Nit: maybe this could be named __sve_load_state() for consistency with
the EL1 version?

> +SYM_FUNC_START(__sve_save_state)
> +	sve_save 0, x1, 2
> +	ret
> +SYM_FUNC_END(__sve_restore_state)

SYM_FUNC_END(__sve_save_state) here?

Thanks,
Quentin

  reply	other threads:[~2021-03-16 10:32 UTC|newest]

Thread overview: 31+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-03-16 10:13 [PATCH 00/10] KVM: arm64: Enable SVE support on nVHE systems Marc Zyngier
2021-03-16 10:13 ` [PATCH 01/10] KVM: arm64: Provide KVM's own save/restore SVE primitives Marc Zyngier
2021-03-16 10:31   ` Quentin Perret [this message]
2021-03-16 12:17     ` Marc Zyngier
2021-03-17 14:30   ` Will Deacon
2021-03-16 10:13 ` [PATCH 02/10] KVM: arm64: Use {read,write}_sysreg_el1 to access ZCR_EL1 Marc Zyngier
2021-03-17 14:31   ` Will Deacon
2021-03-16 10:13 ` [PATCH 03/10] KVM: arm64: Let vcpu_sve_pffr() handle HYP VAs Marc Zyngier
2021-03-17 14:31   ` Will Deacon
2021-03-16 10:13 ` [PATCH 04/10] KVM: arm64: Introduce vcpu_sve_vq() helper Marc Zyngier
2021-03-17 14:01   ` Will Deacon
2021-03-16 10:13 ` [PATCH 05/10] KVM: arm64: Rework SVE host-save/guest-restore Marc Zyngier
2021-03-17 14:29   ` Will Deacon
2021-03-17 14:54     ` Marc Zyngier
2021-03-16 10:13 ` [PATCH 06/10] KVM: arm64: Map SVE context at EL2 when available Marc Zyngier
2021-03-17 16:01   ` Will Deacon
2021-03-18  8:56     ` Marc Zyngier
2021-03-16 10:13 ` [PATCH 07/10] KVM: arm64: Save guest's ZCR_EL1 before saving the FPSIMD state Marc Zyngier
2021-03-17 17:17   ` Will Deacon
2021-03-17 17:20     ` Will Deacon
2021-03-16 10:13 ` [PATCH 08/10] KVM: arm64: Add a nVHE-specific SVE VQ reset hypercall Marc Zyngier
2021-03-16 10:45   ` Quentin Perret
2021-03-16 12:18     ` Marc Zyngier
2021-03-16 14:24   ` Andrew Scull
2021-03-16 15:00     ` Marc Zyngier
2021-03-16 10:13 ` [PATCH 09/10] KVM: arm64: Save/restore SVE state for nVHE Marc Zyngier
2021-03-17 17:57   ` Will Deacon
2021-03-18  9:12     ` Marc Zyngier
2021-03-16 10:13 ` [PATCH 10/10] KVM: arm64: Enable SVE support " Marc Zyngier
2021-03-17 18:00   ` Will Deacon
2021-03-18  9:14     ` Marc Zyngier

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