linux-kernel - [PATCH v2 0/2] KVM: arm64: Store a cpu_fp

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Message-Id: <20240229-kvm-arm64-group-fp-data-v2-0-276de0d550e8@kernel.org>
Date: Thu, 29 Feb 2024 21:47:33 +0000
From: Mark Brown <broonie@...nel.org>
To: Marc Zyngier <maz@...nel.org>, Oliver Upton <oliver.upton@...ux.dev>, 
 James Morse <james.morse@....com>, 
 Suzuki K Poulose <suzuki.poulose@....com>, 
 Catalin Marinas <catalin.marinas@....com>, Will Deacon <will@...nel.org>
Cc: linux-arm-kernel@...ts.infradead.org, kvmarm@...ts.linux.dev, 
 linux-kernel@...r.kernel.org, Mark Brown <broonie@...nel.org>
Subject: [PATCH v2 0/2] KVM: arm64: Store a cpu_fp_state directly in the
 vCPU data

Simplify the binding of the guest state to the CPU when returning to the
host by storing a copy of the structure used to pass the state in the
vCPU data and initialising it during guest setup rather than creating a
new copy each time we exit the guest.

Signed-off-by: Mark Brown <broonie@...nel.org>
---
Changes in v2:
- Remove stale fp_state local.
- Changelog updates.
- Link to v1: https://lore.kernel.org/r/20240226-kvm-arm64-group-fp-data-v1-0-07d13759517e@kernel.org

---
Mark Brown (2):
      KVM: arm64: Rename variable for tracking ownership of FP state
      KVM: arm64: Reuse struct cpu_fp_state to track the guest FP state

 arch/arm64/include/asm/kvm_emulate.h    |  4 ++--
 arch/arm64/include/asm/kvm_host.h       | 25 ++++++++++++-------------
 arch/arm64/kvm/arm.c                    | 14 +++++++++++++-
 arch/arm64/kvm/fpsimd.c                 | 31 ++++++-------------------------
 arch/arm64/kvm/guest.c                  | 21 ++++++++++++++-------
 arch/arm64/kvm/hyp/include/hyp/switch.h |  6 +++---
 arch/arm64/kvm/hyp/nvhe/hyp-main.c      |  9 +++++----
 arch/arm64/kvm/hyp/nvhe/switch.c        |  2 +-
 arch/arm64/kvm/hyp/vhe/switch.c         |  2 +-
 arch/arm64/kvm/reset.c                  | 14 ++++++++------
 10 files changed, 65 insertions(+), 63 deletions(-)
---
base-commit: 54be6c6c5ae8e0d93a6c4641cb7528eb0b6ba478
change-id: 20240226-kvm-arm64-group-fp-data-0ae363ce24fe

Best regards,
-- 
Mark Brown <broonie@...nel.org>