From: Quentin Perret <qperret@google.com>
To: Marc Zyngier <maz@kernel.org>,
Oliver Upton <oliver.upton@linux.dev>,
Joey Gouly <joey.gouly@arm.com>,
Suzuki K Poulose <suzuki.poulose@arm.com>,
Zenghui Yu <yuzenghui@huawei.com>,
Catalin Marinas <catalin.marinas@arm.com>,
Will Deacon <will@kernel.org>
Cc: Fuad Tabba <tabba@google.com>,
Vincent Donnefort <vdonnefort@google.com>,
Sebastian Ene <sebastianene@google.com>,
linux-arm-kernel@lists.infradead.org, kvmarm@lists.linux.dev,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH 17/18] KVM: arm64: Introduce the EL1 pKVM MMU
Date: Wed, 6 Nov 2024 16:58:58 +0000 [thread overview]
Message-ID: <ZyugUvS5dMwXU5nW@google.com> (raw)
In-Reply-To: <20241104133204.85208-18-qperret@google.com>
On Monday 04 Nov 2024 at 13:32:03 (+0000), Quentin Perret wrote:
> +bool pkvm_pgtable_test_clear_young(struct kvm_pgtable *pgt, u64 addr, u64 size, bool mkold)
> +{
> + pkvm_handle_t handle = pkvm_pgt_to_handle(pgt);
> + struct pkvm_mapping *mapping;
> + struct rb_node *tmp;
> + bool young = false;
> +
> + read_lock(&pgt->pkvm.mappings_lock);
> + for_each_mapping_in_range(pgt, addr, addr + size, mapping, tmp)
> + young |= kvm_call_hyp_nvhe(__pkvm_host_wrprotect_guest, handle, mapping->gfn, mkold);
> + read_unlock(&pgt->pkvm.mappings_lock);
> +
> + return young;
> +}
I just observed a funny behaviour in one of my tests, the above explains
it ... Can you find the bug? Ahem. I'll fix in v2 obviously.
next prev parent reply other threads:[~2024-11-06 17:01 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-11-04 13:31 [PATCH 00/18] KVM: arm64: Non-protected guest stage-2 support for pKVM Quentin Perret
2024-11-04 13:31 ` [PATCH 01/18] KVM: arm64: Change the layout of enum pkvm_page_state Quentin Perret
2024-11-04 17:31 ` Sebastian Ene
2024-11-04 17:46 ` Quentin Perret
2024-11-04 13:31 ` [PATCH 02/18] KVM: arm64: Move enum pkvm_page_state to memory.h Quentin Perret
2024-11-04 13:31 ` [PATCH 03/18] KVM: arm64: Make hyp_page::order a u8 Quentin Perret
2024-11-04 13:31 ` [PATCH 04/18] KVM: arm64: Move host page ownership tracking to the hyp vmemmap Quentin Perret
2024-11-04 13:31 ` [PATCH 05/18] KVM: arm64: Pass walk flags to kvm_pgtable_stage2_mkyoung Quentin Perret
2024-11-04 13:31 ` [PATCH 06/18] KVM: arm64: Pass walk flags to kvm_pgtable_stage2_relax_perms Quentin Perret
2024-11-04 13:31 ` [PATCH 07/18] KVM: arm64: Make kvm_pgtable_stage2_init() a static inline function Quentin Perret
2024-11-04 13:31 ` [PATCH 08/18] KVM: arm64: Introduce pkvm_vcpu_{load,put}() Quentin Perret
2024-11-04 13:31 ` [PATCH 09/18] KVM: arm64: Introduce {get,put}_pkvm_hyp_vm() helpers Quentin Perret
2024-11-04 13:31 ` [PATCH 10/18] KVM: arm64: Introduce __pkvm_host_share_guest() Quentin Perret
2024-11-04 13:31 ` [PATCH 11/18] KVM: arm64: Introduce __pkvm_host_unshare_guest() Quentin Perret
2024-11-04 13:31 ` [PATCH 12/18] KVM: arm64: Introduce __pkvm_host_relax_guest_perms() Quentin Perret
2024-11-04 13:31 ` [PATCH 13/18] KVM: arm64: Introduce __pkvm_host_wrprotect_guest() Quentin Perret
2024-11-04 13:32 ` [PATCH 14/18] KVM: arm64: Introduce __pkvm_host_test_clear_young_guest() Quentin Perret
2024-11-04 13:32 ` [PATCH 15/18] KVM: arm64: Introduce __pkvm_host_mkyoung_guest() Quentin Perret
2024-11-04 13:32 ` [PATCH 16/18] KVM: arm64: Introduce __pkvm_tlb_flush_vmid() Quentin Perret
2024-11-04 13:32 ` [PATCH 17/18] KVM: arm64: Introduce the EL1 pKVM MMU Quentin Perret
2024-11-06 16:58 ` Quentin Perret [this message]
2024-11-04 13:32 ` [PATCH 18/18] KVM: arm64: Plumb the pKVM MMU in KVM Quentin Perret
2024-11-05 5:53 ` kernel test robot
2024-11-05 16:07 ` Quentin Perret
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