Re: [PATCH 2/4] KVM: arm64: Introduce flag shadowing TIF_FOREIGN_FPSTATE

[PATCH 0/4] KVM: arm64: Stop mapping current thread_info at EL2 · Marc Zyngier <maz@kernel.org> · 2021-10-21
[PATCH 1/4] KVM: arm64: Reorder vcpu flag definitions · Marc Zyngier <maz@kernel.org> · 2021-10-21
[PATCH 2/4] KVM: arm64: Introduce flag shadowing TIF_FOREIGN_FPSTATE · Marc Zyngier <maz@kernel.org> · 2021-10-21
Re: [PATCH 2/4] KVM: arm64: Introduce flag shadowing TIF_FOREIGN_FPSTATE · Mark Brown <broonie@kernel.org> · 2021-10-21
[PATCH 4/4] arm64/fpsimd: Document the use of TIF_FOREIGN_FPSTATE by KVM · Marc Zyngier <maz@kernel.org> · 2021-10-21
Re: [PATCH 4/4] arm64/fpsimd: Document the use of TIF_FOREIGN_FPSTATE by KVM · Mark Brown <broonie@kernel.org> · 2021-10-21
Re: [PATCH 4/4] arm64/fpsimd: Document the use of TIF_FOREIGN_FPSTATE by KVM · Marc Zyngier <maz@kernel.org> · 2021-10-27
[PATCH 3/4] KVM: arm64: Stop mapping current thread_info at EL2 · Marc Zyngier <maz@kernel.org> · 2021-10-21

From: Mark Brown <broonie@kernel.org>
Date: 2021-10-21 15:29:01
Also in: kvm, kvmarm

On Thu, Oct 21, 2021 at 04:11:22PM +0100, Marc Zyngier wrote:

We currently have to maintain a mapping the thread_info structure
at EL2 in order to be able to check the TIF_FOREIGN_FPSTATE flag.

In order to eventually get rid of this, start with a vcpu flag that
shadows the thread flag on each entry into the hypervisor.

Reviewed-by: Mark Brown <broonie@kernel.org>

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