[PATCH 6.1 00/12] KVM: arm64: Backport of SVE fixes to v6.1
From: Mark Brown
Date: Tue Mar 25 2025 - 14:59:08 EST
This series backports some recent fixes for SVE/KVM interactions from
Mark Rutland to v6.1.
Signed-off-by: Mark Brown <broonie@xxxxxxxxxx>
---
Fuad Tabba (1):
KVM: arm64: Calculate cptr_el2 traps on activating traps
Mark Brown (4):
KVM: arm64: Discard any SVE state when entering KVM guests
arm64/fpsimd: Track the saved FPSIMD state type separately to TIF_SVE
arm64/fpsimd: Have KVM explicitly say which FP registers to save
arm64/fpsimd: Stop using TIF_SVE to manage register saving in KVM
Mark Rutland (7):
KVM: arm64: Unconditionally save+flush host FPSIMD/SVE/SME state
KVM: arm64: Remove host FPSIMD saving for non-protected KVM
KVM: arm64: Remove VHE host restore of CPACR_EL1.ZEN
KVM: arm64: Remove VHE host restore of CPACR_EL1.SMEN
KVM: arm64: Refactor exit handlers
KVM: arm64: Mark some header functions as inline
KVM: arm64: Eagerly switch ZCR_EL{1,2}
arch/arm64/include/asm/fpsimd.h | 4 +-
arch/arm64/include/asm/kvm_host.h | 19 +++---
arch/arm64/include/asm/kvm_hyp.h | 1 +
arch/arm64/include/asm/processor.h | 7 +++
arch/arm64/kernel/fpsimd.c | 69 +++++++++++++++------
arch/arm64/kernel/process.c | 2 +
arch/arm64/kernel/ptrace.c | 3 +
arch/arm64/kernel/signal.c | 7 ++-
arch/arm64/kvm/arm.c | 1 -
arch/arm64/kvm/fpsimd.c | 92 ++++++++-------------------
arch/arm64/kvm/hyp/entry.S | 5 ++
arch/arm64/kvm/hyp/include/hyp/switch.h | 106 +++++++++++++++++++++-----------
arch/arm64/kvm/hyp/nvhe/hyp-main.c | 8 +--
arch/arm64/kvm/hyp/nvhe/pkvm.c | 17 +----
arch/arm64/kvm/hyp/nvhe/switch.c | 91 +++++++++++++++++----------
arch/arm64/kvm/hyp/vhe/switch.c | 12 ++--
arch/arm64/kvm/reset.c | 3 +
17 files changed, 259 insertions(+), 188 deletions(-)
---
base-commit: 344a09659766c83c42cdd4943318deabde89a9c3
change-id: 20250227-stable-sve-6-1-075c1295b363
Best regards,
--
Mark Brown <broonie@xxxxxxxxxx>