From: Catalin Marinas <catalin.marinas@arm.com>
To: Suzuki K Poulose <suzuki.poulose@arm.com>
Cc: kvm@vger.kernel.org, kvmarm@lists.linux.dev, maz@kernel.org,
will@kernel.org, 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, 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,
sudeep.holla@arm.com, jonathan.cameron@oss.qualcomm.com,
Jean-Philippe Brucker <jean-philippe@linaro.org>
Subject: Re: [PATCH v20 22/22] KVM: arm64: CCA: Control user register access for Realms
Date: Thu, 1 Oct 2026 16:53:53 +0100 [thread overview]
Message-ID: <ar6CEXfo-AIYtq1J@arm.com> (raw)
In-Reply-To: <20260924160504.853911-23-suzuki.poulose@arm.com>
On Thu, Sep 24, 2026 at 05:05:04PM +0100, Suzuki K Poulose wrote:
> From: Jean-Philippe Brucker <jean-philippe@linaro.org>
>
> The RMM restricts the access to the register states that the host can
> read/modify for a given Realm.
>
> e.g., At VCPU creation, can modify GPRS (x0-x30) and PC.
> While servicing SMCCC calls via RSI_HOST_CALL or servicing PSCI
> requests.
> MMIO emulation in the unprotected space.
>
> Additionally we use the sysreg configuration to advertise/configure the
> following Realm parameters, which are required before the Realm Descriptor
> :w
Should use Emacs ;)
--
Catalin
next prev parent reply other threads:[~2026-10-01 15:53 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-09-24 16:04 [PATCH v20 00/22] KVM: arm64: CCA: Add basic plumbing for Realms Suzuki K Poulose
2026-09-24 16:04 ` [PATCH v20 01/22] KVM: arm64: protected VM: Handle user writes to CNTVCT_EL0/CNTPCT_EL0 Suzuki K Poulose
2026-09-24 16:04 ` [PATCH v20 02/22] KVM: arm64: Disable Steal time accounting for protected guests Suzuki K Poulose
2026-09-24 16:04 ` [PATCH v20 03/22] KVM: arm64: Include kvm_emulate.h in kvm/arm_psci.h Suzuki K Poulose
2026-09-24 16:04 ` [PATCH v20 04/22] KVM: arm64: Avoid including linux/kvm_host.h in kvm_pgtable.h Suzuki K Poulose
2026-09-24 16:04 ` [PATCH v20 05/22] KVM: arm64: Track the type of VM in kvm_arch Suzuki K Poulose
2026-09-24 16:04 ` [PATCH v20 06/22] KVM: arm64: Don't call vcpu_set_pauth_traps for pKVM host Suzuki K Poulose
2026-09-24 16:04 ` [PATCH v20 07/22] KVM: arm64: Refactor the vcpu_load to allow for VM specific callbacks Suzuki K Poulose
2026-09-24 16:04 ` [PATCH v20 08/22] KVM: arm64: Add vcpu load/put call backs for flavors Suzuki K Poulose
2026-09-24 16:04 ` [PATCH v20 09/22] KVM: arm64: Reuse kvm_stage2_unmap_range in kvm_unmap_gfn_range Suzuki K Poulose
2026-09-24 16:04 ` [PATCH v20 10/22] KVM: arm64: Add VM specific callback for S2 MMU operations Suzuki K Poulose
2026-09-24 16:04 ` [PATCH v20 11/22] KVM: arm64: Use a local kvm pointer in kvm_handle_guest_abort() Suzuki K Poulose
2026-09-24 16:04 ` [PATCH v20 12/22] KVM: arm64: Abstract out memory abort handling Suzuki K Poulose
2026-09-24 16:04 ` [PATCH v20 13/22] KVM: arm64: Mandate VGIC v3 for pKVM VMs and Realms Suzuki K Poulose
2026-09-24 16:04 ` [PATCH v20 14/22] KVM: arm64: CCA: Add a new mode for supporting Realm guests Suzuki K Poulose
2026-09-24 16:04 ` [PATCH v20 15/22] KVM: arm64: CCA: Add VCPU load/put for Realms Suzuki K Poulose
2026-09-24 16:04 ` [PATCH v20 16/22] KVM: arm64: CCA: Add bare minimal S2 operations for Realm Suzuki K Poulose
2026-09-24 16:04 ` [PATCH v20 17/22] KVM: arm64: CCA: Introduce Realms Suzuki K Poulose
2026-09-24 16:05 ` [PATCH v20 18/22] KVM: arm64: CCA: Don't expose unsupported capabilities for realm guests Suzuki K Poulose
2026-09-24 16:25 ` sashiko-bot
2026-09-29 13:25 ` Suzuki K Poulose
2026-09-24 16:05 ` [PATCH v20 19/22] KVM: arm64: CCA: WARN on injected undef exceptions Suzuki K Poulose
2026-09-24 16:05 ` [PATCH v20 20/22] KVM: arm64: CCA: Support timers in realm RECs Suzuki K Poulose
2026-09-24 16:05 ` [PATCH v20 21/22] KVM: arm64: CCA: Expose SVE VL register before VCPU finalization Suzuki K Poulose
2026-09-24 16:05 ` [PATCH v20 22/22] KVM: arm64: CCA: Control user register access for Realms Suzuki K Poulose
2026-10-01 15:53 ` Catalin Marinas [this message]
2026-10-01 16:37 ` Suzuki K Poulose
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