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,
sudeep.holla@arm.com, jonathan.cameron@oss.qualcomm.com
Subject: Re: [PATCH v23 02/14] KVM: arm64: Disable Steal time accounting for protected guests
Date: Wed, 7 Oct 2026 15:10:58 +0200 [thread overview]
Message-ID: <f88b3cf5-8312-453a-bbf6-c5cc3e5ac119@arm.com> (raw)
In-Reply-To: <CA+EHjTyb3-QoLa6P-dGXVdMh9E_vO3p8HceH3TH8h8gPJSd1Kw@mail.gmail.com>
On 07/10/2026 11:51, Fuad Tabba wrote:
> On Wed, 7 Oct 2026 at 09:35, Suzuki K Poulose <suzuki.poulose@arm.com> wrote:
>>
>> PVTIME support is advertised by KVM_CAP_STEAL_TIME, which doesn't take into
>> account the kvm instance. Even with that, a VMM could skip the CAP check
>> and proceed to configure the PVTIME as we don't do further check on the
>> DEVICE_CTRL. Tighten this up by passing the KVM instance around wherever
>> possible and catch things early.
>>
>> Reviewed-by: Fuad Tabba <fuad.tabba@linux.dev>
>> Reviewed-by: Gavin Shan <gshan@redhat.com>
>> Tested-by: Gavin Shan <gshan@redhat.com>
>> Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com>
>
> Someone beat you to it. This is already in kvmarm/next as a5b0f36a045e :)
Thats fine, thanks for the pointer.
Cheers
Suzuki
>
> Cheers,
> /fuad
next prev parent reply other threads:[~2026-10-07 13:11 UTC|newest]
Thread overview: 32+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-10-07 7:35 [PATCH v23 00/14] KVM: arm64: CCA: Add basic plumbing for Realms Suzuki K Poulose
2026-10-07 7:35 ` [PATCH v23 01/14] KVM: arm64: protected VM: Handle user writes to CNTVCT_EL0/CNTPCT_EL0 Suzuki K Poulose
2026-10-07 10:43 ` Fuad Tabba
2026-10-07 7:35 ` [PATCH v23 02/14] KVM: arm64: Disable Steal time accounting for protected guests Suzuki K Poulose
2026-10-07 10:51 ` Fuad Tabba
2026-10-07 13:10 ` Suzuki K Poulose [this message]
2026-10-07 7:35 ` [PATCH v23 03/14] KVM: arm64: Include kvm_emulate.h in kvm/arm_psci.h Suzuki K Poulose
2026-10-07 8:03 ` sashiko-bot
2026-10-07 11:00 ` Fuad Tabba
2026-10-07 7:35 ` [PATCH v23 04/14] KVM: arm64: Avoid including linux/kvm_host.h in kvm_pgtable.h Suzuki K Poulose
2026-10-07 7:35 ` [PATCH v23 05/14] KVM: arm64: Track the type of VM in kvm_arch Suzuki K Poulose
2026-10-07 7:35 ` [PATCH v23 06/14] KVM: arm64: Don't call vcpu_set_pauth_traps for pKVM host Suzuki K Poulose
2026-10-07 11:07 ` Fuad Tabba
2026-10-07 7:35 ` [PATCH v23 07/14] KVM: arm64: Refactor the vcpu_load to allow for VM specific callbacks Suzuki K Poulose
2026-10-07 11:12 ` Fuad Tabba
2026-10-07 7:35 ` [PATCH v23 08/14] KVM: arm64: Add vcpu load/put call backs for flavors Suzuki K Poulose
2026-10-07 11:18 ` Fuad Tabba
2026-10-07 7:35 ` [PATCH v23 09/14] KVM: arm64: Consolidate stage2 unmap range into kvm_stage2_unmap_range Suzuki K Poulose
2026-10-07 7:49 ` sashiko-bot
2026-10-07 8:52 ` Suzuki K Poulose
2026-10-07 11:23 ` Fuad Tabba
2026-10-07 7:35 ` [PATCH v23 10/14] KVM: arm64: Add VM specific callback for S2 MMU operations Suzuki K Poulose
2026-10-07 11:38 ` Fuad Tabba
2026-10-07 7:35 ` [PATCH v23 11/14] KVM: arm64: Use a local kvm pointer in kvm_handle_guest_abort() Suzuki K Poulose
2026-10-07 7:35 ` [PATCH v23 12/14] KVM: arm64: Abstract out memory abort handling Suzuki K Poulose
2026-10-07 13:45 ` Fuad Tabba
2026-10-07 7:35 ` [PATCH v23 13/14] KVM: arm64: Mandate VGIC v3 for pKVM VMs and Realms Suzuki K Poulose
2026-10-07 13:45 ` Fuad Tabba
2026-10-08 8:51 ` Suzuki K Poulose
2026-10-08 11:17 ` Fuad Tabba
2026-10-07 7:35 ` [PATCH v23 14/14] KVM: arm64: Prevent unsupported vcpu features for VM types Suzuki K Poulose
2026-10-07 14:19 ` Fuad Tabba
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