From: Will Deacon <will@kernel.org>
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,
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 03/10] KVM: arm64: Let vcpu_sve_pffr() handle HYP VAs
Date: Wed, 17 Mar 2021 14:31:57 +0000 [thread overview]
Message-ID: <20210317143157.GD5393@willie-the-truck> (raw)
In-Reply-To: <20210316101312.102925-4-maz@kernel.org>
On Tue, Mar 16, 2021 at 10:13:05AM +0000, Marc Zyngier wrote:
> The vcpu_sve_pffr() returns a pointer, which can be an interesting
> thing to do on nVHE. Wrap the pointer with kern_hyp_va(), and
> take this opportunity to remove the unnecessary casts (sve_state
> being a void *).
>
> Signed-off-by: Marc Zyngier <maz@kernel.org>
> ---
> arch/arm64/include/asm/kvm_host.h | 4 ++--
> 1 file changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/arch/arm64/include/asm/kvm_host.h b/arch/arm64/include/asm/kvm_host.h
> index 3d10e6527f7d..fb1d78299ba0 100644
> --- a/arch/arm64/include/asm/kvm_host.h
> +++ b/arch/arm64/include/asm/kvm_host.h
> @@ -372,8 +372,8 @@ struct kvm_vcpu_arch {
> };
>
> /* Pointer to the vcpu's SVE FFR for sve_{save,load}_state() */
> -#define vcpu_sve_pffr(vcpu) ((void *)((char *)((vcpu)->arch.sve_state) + \
> - sve_ffr_offset((vcpu)->arch.sve_max_vl)))
> +#define vcpu_sve_pffr(vcpu) (kern_hyp_va((vcpu)->arch.sve_state) + \
> + sve_ffr_offset((vcpu)->arch.sve_max_vl))
>
> #define vcpu_sve_state_size(vcpu) ({ \
> size_t __size_ret; \
Acked-by: Will Deacon <will@kernel.org>
Will
next prev parent reply other threads:[~2021-03-17 14:32 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
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 [this message]
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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