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b10d86fb8e
linux/arch/arm64/kvm
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Oliver Upton b10d86fb8e KVM: arm64: Reject 32bit user PSTATE on asymmetric systems 
KVM does not support AArch32 EL0 on asymmetric systems. To that end,
prevent userspace from configuring a vCPU in such a state through
setting PSTATE.

It is already ABI that KVM rejects such a write on a system where
AArch32 EL0 is unsupported. Though the kernel's definition of a 32bit
system changed in commit 2122a83331 ("arm64: Allow mismatched
32-bit EL0 support"), KVM's did not.

Fixes: 2122a83331 ("arm64: Allow mismatched 32-bit EL0 support")
Signed-off-by: Oliver Upton <oliver.upton@linux.dev>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20220816192554.1455559-3-oliver.upton@linux.dev
2022-08-17 10:29:07 +01:00
..
hyp Merge branch kvm-arm64/nvhe-stacktrace into kvmarm-master/next 2022-07-27 18:33:27 +01:00
vgic KVM: arm64: vgic: Tidy-up calls to vgic_{get,set}_common_attr() 2022-07-17 11:55:33 +01:00
.gitignore KVM: arm64: Generate hyp_constants.h for the host 2021-12-06 08:37:03 +00:00
arch_timer.c Merge branch kvm-arm64/burn-the-flags into kvmarm-master/next 2022-06-29 10:30:10 +01:00
arm.c KVM: arm64: Treat PMCR_EL1.LC as RES1 on asymmetric systems 2022-08-17 10:29:07 +01:00
debug.c KVM: arm64: Move vcpu debug/SPE/TRBE flags to the input flag set 2022-06-29 10:23:03 +01:00
fpsimd.c KVM: arm64: Move the handling of !FP outside of the fast path 2022-06-29 10:23:56 +01:00
guest.c KVM: arm64: Reject 32bit user PSTATE on asymmetric systems 2022-08-17 10:29:07 +01:00
handle_exit.c Merge branch kvm-arm64/nvhe-stacktrace into kvmarm-master/next 2022-07-27 18:33:27 +01:00
hypercalls.c KVM: arm64: Fix hypercall bitmap writeback when vcpus have already run 2022-05-16 17:40:48 +01:00
inject_fault.c KVM: arm64: Move vcpu PC/Exception flags to the input flag set 2022-06-10 09:54:34 +01:00
irq.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 422 2019-06-05 17:37:15 +02:00
Kconfig KVM: arm64: Move PROTECTED_NVHE_STACKTRACE around 2022-07-27 18:18:03 +01:00
Makefile KVM: arm64: Move nVHE stacktrace unwinding into its own compilation unit 2022-07-27 18:18:03 +01:00
mmio.c KVM: arm64: Generalise VM features into a set of flags 2022-03-18 14:02:33 +00:00
mmu.c Merge branch kvm-arm64/hyp-stack-guard into kvmarm-master/next 2022-05-04 09:42:37 +01:00
pkvm.c KVM: arm64: Move host EL1 code out of hyp/ directory 2021-12-06 08:37:03 +00:00
pmu-emul.c Merge branch kvm-arm64/per-vcpu-host-pmu-data into kvmarm-master/next 2022-05-16 17:48:36 +01:00
pmu.c KVM: arm64: Pass pmu events to hyp via vcpu 2022-05-15 11:26:41 +01:00
psci.c Merge branch kvm-arm64/psci-suspend into kvmarm-master/next 2022-05-16 17:48:20 +01:00
pvtime.c KVM: arm64: Use kvm_write_guest_lock when init stolen time 2020-12-03 19:02:18 +00:00
reset.c KVM: arm64: Move vcpu configuration flags into their own set 2022-06-09 15:43:46 +01:00
stacktrace.c KVM: arm64: Don't open code ARRAY_SIZE() 2022-07-27 18:18:38 +01:00
sys_regs.c KVM: arm64: Treat PMCR_EL1.LC as RES1 on asymmetric systems 2022-08-17 10:29:07 +01:00
sys_regs.h KVM: arm64: Descope kvm_arm_sys_reg_{get,set}_reg() 2022-07-17 11:55:33 +01:00
trace_arm.h KVM: Move arm64's MMU notifier trace events to generic code 2021-04-17 08:30:56 -04:00
trace_handle_exit.h KVM: arm64: Upgrade trace_kvm_arm_set_dreg32() to 64bit 2021-08-20 11:12:18 +01:00
trace.h KVM: arm64: Move virt/kvm/arm to arch/arm64 2020-05-16 15:03:59 +01:00
trng.c KVM: arm64: Implement the TRNG hypervisor call 2021-01-25 22:19:31 +00:00
va_layout.c KVM: arm64: Generate final CTR_EL0 value when running in Protected mode 2021-03-25 11:00:33 +00:00
vgic-sys-reg-v3.c KVM: arm64: vgic-v3: Convert userspace accessors over to FIELD_GET/FIELD_PREP 2022-07-17 11:55:33 +01:00
vmid.c KVM: arm64: Fix inconsistent indenting 2022-06-07 15:27:05 +01:00