Paolo,
Here's the second set of fixes for 6.12.
We have a handful of fixes for the ID register configuration (I had
originally queued them for -rc1, and somehow managed to accidentally
drop the branch on the floor), our NV shadow page tables, the vgic,
and a fix for a regression introduced in -rc1.
As usual, details in the tag.
Please pull,
M.
The following changes since commit a1d402abf8e3ff1d821e88993fc5331784fac0da:
KVM: arm64: Fix kvm_has_feat*() handling of negative features (2024-10-03 19:35:27 +0100)
are available in the Git repository at:
git://git.kernel.org/pub/scm/linux/kernel/git/kvmarm/kvmarm.git tags/kvmarm-fixes-6.12-2
for you to fetch changes up to df5fd75ee305cb5927e0b1a0b46cc988ad8db2b1:
KVM: arm64: Don't eagerly teardown the vgic on init error (2024-10-11 13:40:25 +0100)
----------------------------------------------------------------
KVM/arm64 fixes for 6.12, take #2
- Fix the guest view of the ID registers, making the relevant fields
writable from userspace (affecting ID_AA64DFR0_EL1 and ID_AA64PFR1_EL1)
- Correcly expose S1PIE to guests, fixing a regression introduced
in 6.12-rc1 with the S1POE support
- Fix the recycling of stage-2 shadow MMUs by tracking the context
(are we allowed to block or not) as well as the recycling state
- Address a couple of issues with the vgic when userspace misconfigures
the emulation, resulting in various splats. Headaches courtesy
of our Syzkaller friends
----------------------------------------------------------------
Marc Zyngier (2):
Merge branch kvm-arm64/idregs-6.12 into kvmarm/fixes
KVM: arm64: Don't eagerly teardown the vgic on init error
Mark Brown (1):
KVM: arm64: Expose S1PIE to guests
Oliver Upton (5):
KVM: arm64: Unregister redistributor for failed vCPU creation
KVM: arm64: nv: Keep reference on stage-2 MMU when scheduled out
KVM: arm64: nv: Do not block when unmapping stage-2 if disallowed
KVM: arm64: nv: Punt stage-2 recycling to a vCPU request
KVM: arm64: nv: Clarify safety of allowing TLBI unmaps to reschedule
Shameer Kolothum (1):
KVM: arm64: Make the exposed feature bits in AA64DFR0_EL1 writable from userspace
Shaoqin Huang (4):
KVM: arm64: Disable fields that KVM doesn't know how to handle in ID_AA64PFR1_EL1
KVM: arm64: Use kvm_has_feat() to check if FEAT_SSBS is advertised to the guest
KVM: arm64: Allow userspace to change ID_AA64PFR1_EL1
KVM: selftests: aarch64: Add writable test for ID_AA64PFR1_EL1
arch/arm64/include/asm/kvm_host.h | 7 +++
arch/arm64/include/asm/kvm_mmu.h | 3 +-
arch/arm64/include/asm/kvm_nested.h | 4 +-
arch/arm64/kvm/arm.c | 5 ++
arch/arm64/kvm/hypercalls.c | 12 ++--
arch/arm64/kvm/mmu.c | 15 ++---
arch/arm64/kvm/nested.c | 53 +++++++++++++---
arch/arm64/kvm/sys_regs.c | 75 +++++++++++++++++++++--
arch/arm64/kvm/vgic/vgic-init.c | 28 +++++++--
tools/testing/selftests/kvm/aarch64/set_id_regs.c | 16 ++++-
10 files changed, 183 insertions(+), 35 deletions(-)
