From: Gavin Shan <gshan@redhat.com>
To: Suzuki K Poulose <suzuki.poulose@arm.com>,
kvm@vger.kernel.org, kvmarm@lists.linux.dev
Cc: 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, joey.gouly@arm.com,
tabba@google.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,
Fuad Tabba <fuad.tabba@linux.dev>
Subject: Re: [PATCH v19 02/20] KVM: arm64: Disable Steal time accounting for protected guests
Date: Mon, 28 Sep 2026 10:14:15 +1000 [thread overview]
Message-ID: <5987866e-92b6-41d7-87a7-ca1dee2647af@redhat.com> (raw)
In-Reply-To: <20260920212845.707-3-suzuki.poulose@arm.com>
On 9/21/26 7:28 AM, Suzuki K Poulose 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>
> Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com>
> ---
> arch/arm64/include/asm/kvm_host.h | 2 +-
> arch/arm64/kvm/arm.c | 2 +-
> arch/arm64/kvm/pvtime.c | 14 +++++++-------
> 3 files changed, 9 insertions(+), 9 deletions(-)
>
Reviewed-by: Gavin Shan <gshan@redhat.com>
next prev parent reply other threads:[~2026-09-28 0:14 UTC|newest]
Thread overview: 77+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-09-20 21:28 [PATCH v19 00/20] KVM: arm64: CCA: Add basic plumbing for Realms Suzuki K Poulose
2026-09-20 21:28 ` [PATCH v19 01/20] KVM: arm64: protected VM: Handle user writes to CNTVCT_EL0/CNTPCT_EL0 Suzuki K Poulose
2026-09-22 19:25 ` Jonathan Cameron
2026-09-22 21:53 ` Suzuki K Poulose
2026-09-23 16:48 ` Jonathan Cameron
2026-09-22 22:04 ` Suzuki K Poulose
2026-09-23 16:51 ` Jonathan Cameron
2026-09-20 21:28 ` [PATCH v19 02/20] KVM: arm64: Disable Steal time accounting for protected guests Suzuki K Poulose
2026-09-20 21:44 ` sashiko-bot
2026-09-20 22:24 ` Suzuki K Poulose
2026-09-21 23:07 ` Suzuki K Poulose
2026-09-28 0:14 ` Gavin Shan [this message]
2026-09-20 21:28 ` [PATCH v19 03/20] KVM: arm64: Include kvm_emulate.h in kvm/arm_psci.h Suzuki K Poulose
2026-09-22 19:32 ` Jonathan Cameron
2026-09-20 21:28 ` [PATCH v19 04/20] KVM: arm64: Avoid including linux/kvm_host.h in kvm_pgtable.h Suzuki K Poulose
2026-09-20 21:38 ` sashiko-bot
2026-09-21 8:25 ` Suzuki K Poulose
2026-09-20 21:28 ` [PATCH v19 05/20] KVM: arm64: Track the type of VM in kvm_arch Suzuki K Poulose
2026-09-20 21:38 ` sashiko-bot
2026-09-21 8:18 ` Suzuki K Poulose
2026-09-22 19:40 ` Jonathan Cameron
2026-09-23 6:05 ` Gavin Shan
2026-09-23 6:19 ` Gavin Shan
2026-09-23 10:24 ` Suzuki K Poulose
2026-09-23 13:23 ` Gavin Shan
2026-09-23 13:29 ` Gavin Shan
2026-09-23 13:54 ` Suzuki K Poulose
2026-09-23 16:27 ` Suzuki K Poulose
2026-09-23 21:37 ` Suzuki K Poulose
2026-09-24 1:11 ` Gavin Shan
2026-09-24 8:48 ` Suzuki K Poulose
2026-09-24 10:37 ` Gavin Shan
2026-09-20 21:28 ` [PATCH v19 06/20] KVM: arm64: Refactor the vcpu_load to allow for VM specific callbacks Suzuki K Poulose
2026-09-22 19:57 ` Jonathan Cameron
2026-09-22 22:09 ` Suzuki K Poulose
2026-09-20 21:28 ` [PATCH v19 07/20] KVM: arm64: Add vcpu load/put call backs for flavors Suzuki K Poulose
2026-09-22 22:12 ` Jonathan Cameron
2026-09-20 21:28 ` [PATCH v19 08/20] KVM: arm64: Reuse kvm_stage2_unmap_range in kvm_unmap_gfn_range Suzuki K Poulose
2026-09-22 22:15 ` Jonathan Cameron
2026-09-28 0:17 ` Gavin Shan
2026-09-20 21:28 ` [PATCH v19 09/20] KVM: arm64: Add VM specific callback for S2 MMU operations Suzuki K Poulose
2026-09-22 22:29 ` Jonathan Cameron
2026-09-22 23:21 ` Suzuki K Poulose
2026-09-23 16:54 ` Jonathan Cameron
2026-09-24 15:11 ` Suzuki K Poulose
2026-09-28 1:09 ` Gavin Shan
2026-09-28 1:25 ` Gavin Shan
2026-09-28 8:13 ` Suzuki K Poulose
2026-09-28 8:10 ` Suzuki K Poulose
2026-09-20 21:28 ` [PATCH v19 10/20] KVM: arm64: Abstract out memory abort handling Suzuki K Poulose
2026-09-22 22:38 ` Jonathan Cameron
2026-09-22 23:55 ` Suzuki K Poulose
2026-09-20 21:28 ` [PATCH v19 11/20] KVM: arm64: Mandate VGIC v3 for for VMs running on hyp that don't trust the host Suzuki K Poulose
2026-09-22 22:42 ` Jonathan Cameron
2026-09-22 23:38 ` Suzuki K Poulose
2026-09-28 1:10 ` Gavin Shan
2026-09-20 21:28 ` [PATCH v19 12/20] KVM: arm64: CCA: Add a new mode for supporting Realm guests Suzuki K Poulose
2026-09-22 22:43 ` Jonathan Cameron
2026-09-20 21:28 ` [PATCH v19 13/20] KVM: arm64: CCA: Add VCPU load/put for Realms Suzuki K Poulose
2026-09-28 1:22 ` Gavin Shan
2026-09-20 21:28 ` [PATCH v19 14/20] KVM: arm64: CCA: Add bare minimal S2 operations for Realm Suzuki K Poulose
2026-09-28 1:27 ` Gavin Shan
2026-09-20 21:28 ` [PATCH v19 15/20] KVM: arm64: CCA: Introduce Realms Suzuki K Poulose
2026-09-22 22:49 ` Jonathan Cameron
2026-09-28 1:27 ` Gavin Shan
2026-09-20 21:28 ` [PATCH v19 16/20] KVM: arm64: CCA: Don't expose unsupported capabilities for realm guests Suzuki K Poulose
2026-09-22 22:53 ` Jonathan Cameron
2026-09-20 21:28 ` [PATCH v19 17/20] KVM: arm64: CCA: WARN on injected undef exceptions Suzuki K Poulose
2026-09-22 22:54 ` Jonathan Cameron
2026-09-28 1:28 ` Gavin Shan
2026-09-20 21:28 ` [PATCH v19 18/20] KVM: arm64: CCA: Support timers in realm RECs Suzuki K Poulose
2026-09-20 21:28 ` [PATCH v19 19/20] KVM: arm64: CCA: Expose SVE VL register before VCPU finalization Suzuki K Poulose
2026-09-28 1:29 ` Gavin Shan
2026-09-20 21:28 ` [PATCH v19 20/20] KVM: arm64: CCA: Control user register access for Realms Suzuki K Poulose
2026-09-28 1:30 ` Gavin Shan
2026-09-24 10:40 ` [PATCH v19 00/20] KVM: arm64: CCA: Add basic plumbing " Gavin Shan
2026-09-24 10:49 ` Suzuki K Poulose
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