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From: Marc Zyngier <maz@kernel.org>
To: Eric Auger <eric.auger@redhat.com>
Cc: eric.auger.pro@gmail.com, linux-kernel@vger.kernel.org,
	kvm@vger.kernel.org, kvmarm@lists.cs.columbia.edu,
	drjones@redhat.com, alexandru.elisei@arm.com,
	james.morse@arm.com, julien.thierry.kdev@gmail.com,
	suzuki.poulose@arm.com, shuah@kernel.org, pbonzini@redhat.com
Subject: Re: [PATCH 4/9] KVM: arm/arm64: vgic: Reset base address on kvm_vgic_dist_destroy()
Date: Mon, 28 Dec 2020 15:41:31 +0000	[thread overview]
Message-ID: <878s9ios44.wl-maz@kernel.org> (raw)
In-Reply-To: <20201212185010.26579-5-eric.auger@redhat.com>

On Sat, 12 Dec 2020 18:50:05 +0000,
Eric Auger <eric.auger@redhat.com> wrote:
> 
> On vgic_dist_destroy(), the addresses are not reset. However for
> kvm selftest purpose this would allow to continue the test execution
> even after a failure when running KVM_RUN. So let's reset the
> base addresses.
> 
> Signed-off-by: Eric Auger <eric.auger@redhat.com>
> ---
>  arch/arm64/kvm/vgic/vgic-init.c | 7 +++++--
>  1 file changed, 5 insertions(+), 2 deletions(-)
> 
> diff --git a/arch/arm64/kvm/vgic/vgic-init.c b/arch/arm64/kvm/vgic/vgic-init.c
> index 32e32d67a127..6147bed56b1b 100644
> --- a/arch/arm64/kvm/vgic/vgic-init.c
> +++ b/arch/arm64/kvm/vgic/vgic-init.c
> @@ -335,14 +335,16 @@ static void kvm_vgic_dist_destroy(struct kvm *kvm)
>  	kfree(dist->spis);
>  	dist->spis = NULL;
>  	dist->nr_spis = 0;
> +	dist->vgic_dist_base = VGIC_ADDR_UNDEF;
>  
> -	if (kvm->arch.vgic.vgic_model == KVM_DEV_TYPE_ARM_VGIC_V3) {
> +	if (dist->vgic_model == KVM_DEV_TYPE_ARM_VGIC_V3) {
>  		list_for_each_entry_safe(rdreg, next, &dist->rd_regions, list) {
>  			list_del(&rdreg->list);
>  			kfree(rdreg);
>  		}
>  		INIT_LIST_HEAD(&dist->rd_regions);
> -	}
> +	} else
> +		kvm->arch.vgic.vgic_cpu_base = VGIC_ADDR_UNDEF;

Since you have converted the hunk above to use dist->, you could do
the same thing here. And the coding style dictates that you need {} on
the else side as well.

>
>  	if (vgic_has_its(kvm))
>  		vgic_lpi_translation_cache_destroy(kvm);
> @@ -362,6 +364,7 @@ void kvm_vgic_vcpu_destroy(struct kvm_vcpu *vcpu)
>  	vgic_flush_pending_lpis(vcpu);
>  
>  	INIT_LIST_HEAD(&vgic_cpu->ap_list_head);
> +	vgic_cpu->rd_iodev.base_addr = VGIC_ADDR_UNDEF;
>  }
>  
>  /* To be called with kvm->lock held */
> -- 
> 2.21.3
> 
> 

Thanks,

	M.

-- 
Without deviation from the norm, progress is not possible.

  reply	other threads:[~2020-12-28 15:44 UTC|newest]

Thread overview: 33+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-12-12 18:50 [PATCH 0/9] KVM/ARM: Some vgic fixes and init sequence KVM selftests Eric Auger
2020-12-12 18:50 ` [PATCH 1/9] KVM: arm64: vgic-v3: Fix some error codes when setting RDIST base Eric Auger
2021-01-06 16:32   ` Alexandru Elisei
2021-01-14 10:02     ` Auger Eric
2020-12-12 18:50 ` [PATCH 2/9] KVM: arm64: Fix KVM_VGIC_V3_ADDR_TYPE_REDIST_REGION read Eric Auger
2021-01-06 17:12   ` Alexandru Elisei
2021-01-13 17:18     ` Auger Eric
2020-12-12 18:50 ` [PATCH 3/9] KVM: arm64: vgic-v3: Fix error handling in vgic_v3_set_redist_base() Eric Auger
2020-12-28 15:35   ` Marc Zyngier
2021-01-13 17:18     ` Auger Eric
2020-12-12 18:50 ` [PATCH 4/9] KVM: arm/arm64: vgic: Reset base address on kvm_vgic_dist_destroy() Eric Auger
2020-12-28 15:41   ` Marc Zyngier [this message]
2021-01-13 17:18     ` Auger Eric
2020-12-12 18:50 ` [PATCH 5/9] KVM: arm: move has_run_once after the map_resources Eric Auger
2021-01-12 14:55   ` Alexandru Elisei
2021-01-14 10:02     ` Auger Eric
2021-01-20 15:56       ` Alexandru Elisei
2021-03-12 17:27         ` Auger Eric
2020-12-12 18:50 ` [PATCH 6/9] docs: kvm: devices/arm-vgic-v3: enhance KVM_DEV_ARM_VGIC_CTRL_INIT doc Eric Auger
2021-01-12 15:39   ` Alexandru Elisei
2021-01-13 17:18     ` Auger Eric
2020-12-12 18:50 ` [PATCH 7/9] KVM: arm64: Simplify argument passing to vgic_uaccess_[read|write] Eric Auger
2021-01-12 16:04   ` Alexandru Elisei
2021-01-12 16:16     ` Alexandru Elisei
2021-01-13 17:18       ` Auger Eric
2020-12-12 18:50 ` [PATCH 8/9] KVM: arm64: vgic-v3: Expose GICR_TYPER.Last for userspace Eric Auger
2021-01-12 17:02   ` Alexandru Elisei
2021-01-14 10:16     ` Auger Eric
2021-01-20 16:13       ` Alexandru Elisei
2021-03-12 17:26         ` Auger Eric
2021-01-12 17:28   ` Alexandru Elisei
2021-01-12 17:48     ` Marc Zyngier
2020-12-12 18:50 ` [PATCH 9/9] KVM: selftests: aarch64/vgic-v3 init sequence tests Eric Auger

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