Re: [PATCH v5 17/26] KVM: arm64: Reject ioctl access to FPSIMD V-regs on SVE vcpus

[PATCH v5 00/26] KVM: arm64: SVE guest support · Dave Martin <Dave.Martin@arm.com> · 2019-02-18
[PATCH v5 04/26] KVM: arm64: Refactor kvm_arm_num_regs() for easier maintenance · Dave Martin <Dave.Martin@arm.com> · 2019-02-18
[PATCH v5 01/26] KVM: Documentation: Document arm64 core registers in detail · Dave Martin <Dave.Martin@arm.com> · 2019-02-18
Re: [PATCH v5 01/26] KVM: Documentation: Document arm64 core registers in detail · Julien Grall <hidden> · 2019-02-21
Re: [PATCH v5 01/26] KVM: Documentation: Document arm64 core registers in detail · Dave Martin <Dave.Martin@arm.com> · 2019-02-26
Re: [PATCH v5 01/26] KVM: Documentation: Document arm64 core registers in detail · Peter Maydell <hidden> · 2019-02-21
[PATCH v5 02/26] arm64: fpsimd: Always set TIF_FOREIGN_FPSTATE on task state flush · Dave Martin <Dave.Martin@arm.com> · 2019-02-18
Re: [PATCH v5 02/26] arm64: fpsimd: Always set TIF_FOREIGN_FPSTATE on task state flush · Julien Grall <hidden> · 2019-02-21
Re: [PATCH v5 02/26] arm64: fpsimd: Always set TIF_FOREIGN_FPSTATE on task state flush · Dave Martin <Dave.Martin@arm.com> · 2019-02-26
Re: [PATCH v5 02/26] arm64: fpsimd: Always set TIF_FOREIGN_FPSTATE on task state flush · Julien Grall <hidden> · 2019-02-26
[PATCH v5 15/26] KVM: Allow 2048-bit register access via ioctl interface · Dave Martin <Dave.Martin@arm.com> · 2019-02-18
[PATCH v5 06/26] arm64/sve: Check SVE virtualisability · Dave Martin <Dave.Martin@arm.com> · 2019-02-18
Re: [PATCH v5 06/26] arm64/sve: Check SVE virtualisability · Julien Thierry <hidden> · 2019-02-20
Re: [PATCH v5 06/26] arm64/sve: Check SVE virtualisability · Dave Martin <Dave.Martin@arm.com> · 2019-02-26
Re: [PATCH v5 06/26] arm64/sve: Check SVE virtualisability · Julien Thierry <hidden> · 2019-03-01
Re: [PATCH v5 06/26] arm64/sve: Check SVE virtualisability · Dave Martin <Dave.Martin@arm.com> · 2019-03-01
Re: [PATCH v5 06/26] arm64/sve: Check SVE virtualisability · Julien Grall <hidden> · 2019-02-21
Re: [PATCH v5 06/26] arm64/sve: Check SVE virtualisability · Dave Martin <Dave.Martin@arm.com> · 2019-02-26
Re: [PATCH v5 06/26] arm64/sve: Check SVE virtualisability · Julien Grall <hidden> · 2019-02-26
[PATCH v5 12/26] KVM: arm64: Support runtime sysreg visibility filtering · Dave Martin <Dave.Martin@arm.com> · 2019-02-18
Re: [PATCH v5 12/26] KVM: arm64: Support runtime sysreg visibility filtering · Julien Thierry <hidden> · 2019-02-20
Re: [PATCH v5 12/26] KVM: arm64: Support runtime sysreg visibility filtering · Dave Martin <Dave.Martin@arm.com> · 2019-02-26
Re: [PATCH v5 12/26] KVM: arm64: Support runtime sysreg visibility filtering · Mark Rutland <mark.rutland@arm.com> · 2019-02-20
Re: [PATCH v5 12/26] KVM: arm64: Support runtime sysreg visibility filtering · Dave Martin <Dave.Martin@arm.com> · 2019-02-26
[PATCH v5 13/26] KVM: arm64/sve: System register context switch and access support · Dave Martin <Dave.Martin@arm.com> · 2019-02-18
Re: [PATCH v5 13/26] KVM: arm64/sve: System register context switch and access support · Julien Thierry <hidden> · 2019-02-20
Re: [PATCH v5 13/26] KVM: arm64/sve: System register context switch and access support · Julien Grall <hidden> · 2019-02-26
Re: [PATCH v5 13/26] KVM: arm64/sve: System register context switch and access support · Dave Martin <Dave.Martin@arm.com> · 2019-02-26
Re: [PATCH v5 13/26] KVM: arm64/sve: System register context switch and access support · Julien Grall <hidden> · 2019-02-27
Re: [PATCH v5 13/26] KVM: arm64/sve: System register context switch and access support · Dave Martin <Dave.Martin@arm.com> · 2019-02-27
Re: [PATCH v5 13/26] KVM: arm64/sve: System register context switch and access support · Julien Grall <hidden> · 2019-02-27
Re: [PATCH v5 13/26] KVM: arm64/sve: System register context switch and access support · Dave Martin <Dave.Martin@arm.com> · 2019-02-27
[PATCH v5 16/26] KVM: arm64: Add missing #include of <linux/string.h> in guest.c · Dave Martin <Dave.Martin@arm.com> · 2019-02-18
[PATCH v5 03/26] KVM: arm64: Delete orphaned declaration for __fpsimd_enabled() · Dave Martin <Dave.Martin@arm.com> · 2019-02-18
[PATCH v5 23/26] KVM: arm64/sve: Allow userspace to enable SVE for vcpus · Dave Martin <Dave.Martin@arm.com> · 2019-02-18
Re: [PATCH v5 23/26] KVM: arm64/sve: Allow userspace to enable SVE for vcpus · Julien Thierry <hidden> · 2019-02-22
Re: [PATCH v5 23/26] KVM: arm64/sve: Allow userspace to enable SVE for vcpus · Dave Martin <Dave.Martin@arm.com> · 2019-02-26
[PATCH v5 10/26] KVM: arm64: Propagate vcpu into read_id_reg() · Dave Martin <Dave.Martin@arm.com> · 2019-02-18
[PATCH v5 21/26] KVM: arm/arm64: Add hook to finalize the vcpu configuration · Dave Martin <Dave.Martin@arm.com> · 2019-02-18
[PATCH v5 11/26] KVM: arm64: Extend reset_unknown() to handle mixed RES0/UNKNOWN registers · Dave Martin <Dave.Martin@arm.com> · 2019-02-18
Re: [PATCH v5 11/26] KVM: arm64: Extend reset_unknown() to handle mixed RES0/UNKNOWN registers · Julien Thierry <hidden> · 2019-02-20
Re: [PATCH v5 11/26] KVM: arm64: Extend reset_unknown() to handle mixed RES0/UNKNOWN registers · Dave Martin <Dave.Martin@arm.com> · 2019-02-26
Re: [PATCH v5 11/26] KVM: arm64: Extend reset_unknown() to handle mixed RES0/UNKNOWN registers · Julien Grall <hidden> · 2019-02-22
[PATCH v5 19/26] KVM: arm64: Enumerate SVE register indices for KVM_GET_REG_LIST · Dave Martin <Dave.Martin@arm.com> · 2019-02-18
Re: [PATCH v5 19/26] KVM: arm64: Enumerate SVE register indices for KVM_GET_REG_LIST · Julien Thierry <hidden> · 2019-02-21
[PATCH v5 22/26] KVM: arm64/sve: Add pseudo-register for the guest's vector lengths · Dave Martin <Dave.Martin@arm.com> · 2019-02-18
Re: [PATCH v5 22/26] KVM: arm64/sve: Add pseudo-register for the guest's vector lengths · Julien Thierry <hidden> · 2019-02-21
Re: [PATCH v5 22/26] KVM: arm64/sve: Add pseudo-register for the guest's vector lengths · Dave Martin <Dave.Martin@arm.com> · 2019-02-26
Re: [PATCH v5 22/26] KVM: arm64/sve: Add pseudo-register for the guest's vector lengths · Julien Thierry <hidden> · 2019-03-01
Re: [PATCH v5 22/26] KVM: arm64/sve: Add pseudo-register for the guest's vector lengths · Dave Martin <Dave.Martin@arm.com> · 2019-03-01
Re: [PATCH v5 22/26] KVM: arm64/sve: Add pseudo-register for the guest's vector lengths · Marc Zyngier <hidden> · 2019-03-07
Re: [PATCH v5 22/26] KVM: arm64/sve: Add pseudo-register for the guest's vector lengths · Dave Martin <Dave.Martin@arm.com> · 2019-03-07
[PATCH v5 24/26] KVM: arm64: Add a capabillity to advertise SVE support · Dave Martin <Dave.Martin@arm.com> · 2019-02-18
Re: [PATCH v5 24/26] KVM: arm64: Add a capabillity to advertise SVE support · Julien Thierry <hidden> · 2019-02-22
Re: [PATCH v5 24/26] KVM: arm64: Add a capabillity to advertise SVE support · Dave Martin <Dave.Martin@arm.com> · 2019-02-26
[PATCH v5 18/26] KVM: arm64/sve: Add SVE support to register access ioctl interface · Dave Martin <Dave.Martin@arm.com> · 2019-02-18
Re: [PATCH v5 18/26] KVM: arm64/sve: Add SVE support to register access ioctl interface · Julien Thierry <hidden> · 2019-02-21
Re: [PATCH v5 18/26] KVM: arm64/sve: Add SVE support to register access ioctl interface · Dave Martin <Dave.Martin@arm.com> · 2019-02-26
Re: [PATCH v5 18/26] KVM: arm64/sve: Add SVE support to register access ioctl interface · Julien Thierry <hidden> · 2019-03-01
Re: [PATCH v5 18/26] KVM: arm64/sve: Add SVE support to register access ioctl interface · Dave Martin <Dave.Martin@arm.com> · 2019-03-01
[PATCH v5 05/26] KVM: arm64: Add missing #include of <linux/bitmap.h> to kvm_host.h · Dave Martin <Dave.Martin@arm.com> · 2019-02-18
Re: [PATCH v5 05/26] KVM: arm64: Add missing #include of <linux/bitmap.h> to kvm_host.h · Mark Rutland <mark.rutland@arm.com> · 2019-02-20
Re: [PATCH v5 05/26] KVM: arm64: Add missing #include of <linux/bitmap.h> to kvm_host.h · Dave Martin <Dave.Martin@arm.com> · 2019-02-26
Re: [PATCH v5 05/26] KVM: arm64: Add missing #include of <linux/bitmap.h> to kvm_host.h · Mark Rutland <mark.rutland@arm.com> · 2019-02-26
Re: [PATCH v5 05/26] KVM: arm64: Add missing #include of <linux/bitmap.h> to kvm_host.h · Dave Martin <Dave.Martin@arm.com> · 2019-02-26
Re: [PATCH v5 05/26] KVM: arm64: Add missing #include of <linux/bitmap.h> to kvm_host.h · Mark Rutland <mark.rutland@arm.com> · 2019-02-26
[PATCH v5 07/26] arm64/sve: Clarify role of the VQ map maintenance functions · Dave Martin <Dave.Martin@arm.com> · 2019-02-18
Re: [PATCH v5 07/26] arm64/sve: Clarify role of the VQ map maintenance functions · Julien Thierry <hidden> · 2019-02-20
Re: [PATCH v5 07/26] arm64/sve: Clarify role of the VQ map maintenance functions · Dave Martin <Dave.Martin@arm.com> · 2019-02-26
Re: [PATCH v5 07/26] arm64/sve: Clarify role of the VQ map maintenance functions · Julien Grall <hidden> · 2019-02-21
Re: [PATCH v5 07/26] arm64/sve: Clarify role of the VQ map maintenance functions · Dave Martin <Dave.Martin@arm.com> · 2019-02-26
[PATCH v5 08/26] arm64/sve: Enable SVE state tracking for non-task contexts · Dave Martin <Dave.Martin@arm.com> · 2019-02-18
Re: [PATCH v5 08/26] arm64/sve: Enable SVE state tracking for non-task contexts · Julien Grall <hidden> · 2019-02-22
Re: [PATCH v5 08/26] arm64/sve: Enable SVE state tracking for non-task contexts · Dave Martin <Dave.Martin@arm.com> · 2019-02-26
Re: [PATCH v5 08/26] arm64/sve: Enable SVE state tracking for non-task contexts · Julien Grall <hidden> · 2019-02-26
Re: [PATCH v5 08/26] arm64/sve: Enable SVE state tracking for non-task contexts · Dave Martin <Dave.Martin@arm.com> · 2019-02-26
Re: [PATCH v5 08/26] arm64/sve: Enable SVE state tracking for non-task contexts · Julien Grall <hidden> · 2019-02-26
Re: [PATCH v5 08/26] arm64/sve: Enable SVE state tracking for non-task contexts · Dave Martin <Dave.Martin@arm.com> · 2019-02-26
[PATCH v5 09/26] KVM: arm64: Add a vcpu flag to control SVE visibility for the guest · Dave Martin <Dave.Martin@arm.com> · 2019-02-18
[PATCH v5 20/26] arm64/sve: In-kernel vector length availability query interface · Dave Martin <Dave.Martin@arm.com> · 2019-02-18
[PATCH v5 26/26] KVM: arm64/sve: Document KVM API extensions for SVE · Dave Martin <Dave.Martin@arm.com> · 2019-02-18
[PATCH v5 17/26] KVM: arm64: Reject ioctl access to FPSIMD V-regs on SVE vcpus · Dave Martin <Dave.Martin@arm.com> · 2019-02-18
Re: [PATCH v5 17/26] KVM: arm64: Reject ioctl access to FPSIMD V-regs on SVE vcpus · Julien Thierry <hidden> · 2019-02-21
Re: [PATCH v5 17/26] KVM: arm64: Reject ioctl access to FPSIMD V-regs on SVE vcpus · Dave Martin <Dave.Martin@arm.com> · 2019-02-26
[PATCH v5 25/26] KVM: Document errors for KVM_GET_ONE_REG and KVM_SET_ONE_REG · Dave Martin <Dave.Martin@arm.com> · 2019-02-18
[PATCH v5 14/26] KVM: arm64/sve: Context switch the SVE registers · Dave Martin <Dave.Martin@arm.com> · 2019-02-18
Re: [PATCH v5 14/26] KVM: arm64/sve: Context switch the SVE registers · Mark Rutland <mark.rutland@arm.com> · 2019-02-20
Re: [PATCH v5 14/26] KVM: arm64/sve: Context switch the SVE registers · Dave Martin <Dave.Martin@arm.com> · 2019-02-26
Re: [PATCH v5 14/26] KVM: arm64/sve: Context switch the SVE registers · Julien Thierry <hidden> · 2019-02-20
Re: [PATCH v5 14/26] KVM: arm64/sve: Context switch the SVE registers · Dave Martin <Dave.Martin@arm.com> · 2019-02-26
Re: [PATCH v5 14/26] KVM: arm64/sve: Context switch the SVE registers · Julien Grall <hidden> · 2019-02-26
Re: [PATCH v5 14/26] KVM: arm64/sve: Context switch the SVE registers · Dave Martin <Dave.Martin@arm.com> · 2019-02-27
Re: [PATCH v5 00/26] KVM: arm64: SVE guest support · Dave Martin <Dave.Martin@arm.com> · 2019-02-20
RE: [PATCH v5 00/26] KVM: arm64: SVE guest support · Zhang, Lei <hidden> · 2019-03-03
Re: [PATCH v5 00/26] KVM: arm64: SVE guest support · Dave Martin <Dave.Martin@arm.com> · 2019-03-05
RE: [PATCH v5 00/26] KVM: arm64: SVE guest support · Zhang, Lei <hidden> · 2019-03-08

From: Dave Martin <Dave.Martin@arm.com>
Date: 2019-02-26 12:13:46
Also in: kvmarm

On Thu, Feb 21, 2019 at 12:06:23PM +0000, Julien Thierry wrote:


On 18/02/2019 19:52, Dave Martin wrote:

quoted

In order to avoid the pointless complexity of maintaining two ioctl
register access views of the same data, this patch blocks ioctl
access to the FPSIMD V-registers on vcpus that support SVE.

This will make it more straightforward to add SVE register access
support.

Since SVE is an opt-in feature for userspace, this will not affect
existing users.

Signed-off-by: Dave Martin <Dave.Martin@arm.com>

Reviewed-by: Julien Thierry <redacted>

Thanks
---Dave

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