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From: Suzuki K Poulose <suzuki.poulose@arm.com>
To: Fuad Tabba <fuad.tabba@linux.dev>
Cc: kvm@vger.kernel.org, kvmarm@lists.linux.dev, maz@kernel.org,
	will@kernel.org, catalin.marinas@arm.com,
	linux-kernel@vger.kernel.org,
	linux-arm-kernel@lists.infradead.org, steven.price@arm.com,
	aneesh.kumar@kernel.org, oupton@kernel.org, gshan@redhat.com,
	joey.gouly@arm.com, yuzenghui@huawei.com,
	linux-coco@lists.linux.dev, gankulkarni@os.amperecomputing.com,
	sdonthineni@nvidia.com, alpergun@google.com,
	fj0570is@fujitsu.com, WeiLin.Chang@arm.com,
	lpieralisi@kernel.org, enju.kohei@fujitsu.com
Subject: Re: [PATCH v17 03/20] KVM: arm64: Track the type of VM in kvm_arch
Date: Wed, 9 Sep 2026 12:30:57 +0100	[thread overview]
Message-ID: <3d75ad7b-cce9-4658-8af3-2269db91c76c@arm.com> (raw)
In-Reply-To: <CA+EHjTybMZ1TORs25En0eb7_41FBcB=BK1ygYPy5cOHUnQO84A@mail.gmail.com>

On 09/09/2026 12:28, Fuad Tabba wrote:
> Hi Suzuki,
> 
> On Tue, 8 Sept 2026 at 17:23, Suzuki K Poulose <suzuki.poulose@arm.com> wrote:
>>
>> KVM arm64 has different types of VMs with all the different modes in which the
>> hypervisor code can be run. e.g., VHE, nVHE, PKVM etc. Then there is protected
>> VM and normal VMs with PKVM. We might soon add other types, e.g., Arm CCA Realm.
>> So in an effort to make the handling of these different types of VMs a bit more
>> friendlier to the eyes, add a VM flavor to the kvm_arch and we could then add
> 
> nit: "friendlier"
> 
>> handlers for different operations based on the VM type.
>>
>> Keep the flavor initialisation at the beginning to allow for the detection
>> early enough and fail out on any unsupported requests. (e.g., protected on !PKVM)
> 
> In the commit msg and later in the code (not in the enum though), can
> you please spell pKVM with a lower-case p?

Ack.

> 
> Reviewed-by: Fuad Tabba <fuad.tabba@linux.dev>

Cheers
Suzuki



  reply	other threads:[~2026-09-09 11:31 UTC|newest]

Thread overview: 48+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-09-08 16:22 [PATCH v17 00/20] KVM: arm64: CCA: Add basic plumbing for Realms Suzuki K Poulose
2026-09-08 16:22 ` [PATCH v17 01/20] KVM: arm64: Include kvm_emulate.h in kvm/arm_psci.h Suzuki K Poulose
2026-09-09 11:20   ` Fuad Tabba
2026-09-08 16:22 ` [PATCH v17 02/20] KVM: arm64: Avoid including linux/kvm_host.h in kvm_pgtable.h Suzuki K Poulose
2026-09-09 11:22   ` Fuad Tabba
2026-09-09 11:24     ` Suzuki K Poulose
2026-09-10  3:40   ` Gavin Shan
2026-09-08 16:22 ` [PATCH v17 03/20] KVM: arm64: Track the type of VM in kvm_arch Suzuki K Poulose
2026-09-09 11:28   ` Fuad Tabba
2026-09-09 11:30     ` Suzuki K Poulose [this message]
2026-09-10  3:39   ` Gavin Shan
2026-09-10  6:35     ` Suzuki K Poulose
2026-09-08 16:22 ` [PATCH v17 04/20] KVM: arm64: Refactor the vcpu_load to allow for VM specific callbacks Suzuki K Poulose
2026-09-10  4:00   ` Gavin Shan
2026-09-10 10:21     ` Suzuki K Poulose
2026-09-08 16:22 ` [PATCH v17 05/20] KVM: arm64: Add vcpu load/put call backs for flavors Suzuki K Poulose
2026-09-10  5:33   ` Gavin Shan
2026-09-10  8:40     ` Suzuki K Poulose
2026-09-08 16:22 ` [PATCH v17 06/20] KVM: arm64: CCA: Add a new mode for supporting Realm guests Suzuki K Poulose
2026-09-09  3:26   ` Kohei Enju
2026-09-09 10:48     ` Marc Zyngier
2026-09-10  4:49       ` Kohei Enju
2026-09-10  5:53   ` Gavin Shan
2026-09-10  8:43     ` Suzuki K Poulose
2026-09-10  9:40       ` Gavin Shan
2026-09-08 16:22 ` [PATCH v17 07/20] KVM: arm64: CCA: Introduce Realms Suzuki K Poulose
2026-09-08 16:22 ` [PATCH v17 08/20] KVM: arm64: coco: Add a helper to check if a VM is confidential compute guest Suzuki K Poulose
2026-09-08 16:22 ` [PATCH v17 09/20] KVM: arm64: coco: arch_timer: Prevent timer offset configuration Suzuki K Poulose
2026-09-08 16:22 ` [PATCH v17 10/20] KVM: arm64: coco: Disable Steal time accounting for coco guests Suzuki K Poulose
2026-09-09 11:45   ` Fuad Tabba
2026-09-09 11:52     ` Suzuki K Poulose
2026-09-09 12:23       ` Fuad Tabba
2026-09-10 10:27         ` Suzuki K Poulose
2026-09-10 12:42           ` Fuad Tabba
2026-09-10 12:44             ` Suzuki K Poulose
2026-09-08 16:22 ` [PATCH v17 11/20] KVM: arm64: coco: Don't handle MMIO with no ISV Suzuki K Poulose
2026-09-08 16:22 ` [PATCH v17 12/20] KVM: arm64: CCA: Support timers in realm RECs Suzuki K Poulose
2026-09-08 16:22 ` [PATCH v17 13/20] KVM: arm64: CCA: Add VCPU load/put for Realms Suzuki K Poulose
2026-09-08 16:22 ` [PATCH v17 14/20] KVM: arm64: CCA: Don't expose unsupported capabilities for realm guests Suzuki K Poulose
2026-09-08 16:22 ` [PATCH v17 15/20] KVM: arm64: CCA: WARN on injected undef exceptions Suzuki K Poulose
2026-09-08 16:22 ` [PATCH v17 16/20] KVM: arm64: CCA: Provide register list for unfinalized RECs Suzuki K Poulose
2026-09-08 16:22 ` [PATCH v17 17/20] KVM: arm64: CCA: Provide an accurate register list Suzuki K Poulose
2026-09-08 16:22 ` [PATCH v17 18/20] KVM: arm64: Reuse kvm_stage2_unmap_range in kvm_unmap_gfn_range Suzuki K Poulose
2026-09-09 11:50   ` Fuad Tabba
2026-09-08 16:22 ` [PATCH v17 19/20] KVM: arm64: Add VM specific callback for S2 MMU operations Suzuki K Poulose
2026-09-08 16:22 ` [PATCH v17 20/20] KVM: arm64: Abstract out memory abort handling Suzuki K Poulose
2026-09-09 13:18 ` [PATCH v17 00/20] KVM: arm64: CCA: Add basic plumbing for Realms Fuad Tabba
2026-09-09 13:52   ` Suzuki K Poulose

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