Paolo,
Here's a large-ish set of fixes for 6.10, the bulk of it addressing
the sorry state of pKVM's handling of FP/SVE (kudos to Fuad for sticking
with it and getting the series in shape).
The rest is a more esoteric set of AArch32 and NV fixes, details in the
tag as usual.
Please pull,
M.
The following changes since commit 1613e604df0cd359cf2a7fbd9be7a0bcfacfabd0:
Linux 6.10-rc1 (2024-05-26 15:20:12 -0700)
are available in the Git repository at:
git://git.kernel.org/pub/scm/linux/kernel/git/kvmarm/kvmarm.git tags/kvmarm-fixes-6.10-1
for you to fetch changes up to afb91f5f8ad7af172d993a34fde1947892408f53:
KVM: arm64: Ensure that SME controls are disabled in protected mode (2024-06-04 15:06:33 +0100)
----------------------------------------------------------------
KVM/arm64 fixes for 6.10, take #1
- Large set of FP/SVE fixes for pKVM, addressing the fallout
from the per-CPU data rework and making sure that the host
is not involved in the FP/SVE switching any more
- Allow FEAT_BTI to be enabled with NV now that FEAT_PAUTH
is copletely supported
- Fix for the respective priorities of Failed PAC, Illegal
Execution state and Instruction Abort exceptions
- Fix the handling of AArch32 instruction traps failing their
condition code, which was broken by the introduction of
ESR_EL2.ISS2
- Allow vpcus running in AArch32 state to be restored in
System mode
- Fix AArch32 GPR restore that would lose the 64 bit state
under some conditions
----------------------------------------------------------------
Fuad Tabba (9):
KVM: arm64: Reintroduce __sve_save_state
KVM: arm64: Fix prototype for __sve_save_state/__sve_restore_state
KVM: arm64: Abstract set/clear of CPTR_EL2 bits behind helper
KVM: arm64: Specialize handling of host fpsimd state on trap
KVM: arm64: Allocate memory mapped at hyp for host sve state in pKVM
KVM: arm64: Eagerly restore host fpsimd/sve state in pKVM
KVM: arm64: Consolidate initializing the host data's fpsimd_state/sve in pKVM
KVM: arm64: Refactor CPACR trap bit setting/clearing to use ELx format
KVM: arm64: Ensure that SME controls are disabled in protected mode
Marc Zyngier (5):
KVM: arm64: Fix AArch32 register narrowing on userspace write
KVM: arm64: Allow AArch32 PSTATE.M to be restored as System mode
KVM: arm64: AArch32: Fix spurious trapping of conditional instructions
KVM: arm64: nv: Fix relative priorities of exceptions generated by ERETAx
KVM: arm64: nv: Expose BTI and CSV_frac to a guest hypervisor
arch/arm64/include/asm/el2_setup.h | 6 +--
arch/arm64/include/asm/kvm_arm.h | 6 +++
arch/arm64/include/asm/kvm_emulate.h | 71 ++++++++++++++++++++++++++--
arch/arm64/include/asm/kvm_host.h | 25 +++++++++-
arch/arm64/include/asm/kvm_hyp.h | 4 +-
arch/arm64/include/asm/kvm_pkvm.h | 9 ++++
arch/arm64/kvm/arm.c | 76 +++++++++++++++++++++++++++++
arch/arm64/kvm/emulate-nested.c | 21 +++++----
arch/arm64/kvm/fpsimd.c | 11 +++--
arch/arm64/kvm/guest.c | 3 +-
arch/arm64/kvm/hyp/aarch32.c | 18 ++++++-
arch/arm64/kvm/hyp/fpsimd.S | 6 +++
arch/arm64/kvm/hyp/include/hyp/switch.h | 36 +++++++-------
arch/arm64/kvm/hyp/include/nvhe/pkvm.h | 1 -
arch/arm64/kvm/hyp/nvhe/hyp-main.c | 84 +++++++++++++++++++++++++++++----
arch/arm64/kvm/hyp/nvhe/pkvm.c | 17 ++-----
arch/arm64/kvm/hyp/nvhe/setup.c | 25 +++++++++-
arch/arm64/kvm/hyp/nvhe/switch.c | 24 ++++++++--
arch/arm64/kvm/hyp/vhe/switch.c | 12 +++--
arch/arm64/kvm/nested.c | 6 ++-
arch/arm64/kvm/reset.c | 3 ++
21 files changed, 391 insertions(+), 73 deletions(-)
