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linux/arch/arm64/kvm
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Oliver Upton 57b5be2bd1 KVM: arm64: Reject 32bit user PSTATE on asymmetric systems 
[ Upstream commit b10d86fb8e ]

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
Signed-off-by: Sasha Levin <sashal@kernel.org>
2022-08-25 11:40:29 +02:00
..
hyp KVM: arm64: Don't return from void function 2022-08-17 14:23:49 +02:00
vgic KVM: arm64: Don't read a HW interrupt pending state in user context 2022-06-22 14:22:05 +02:00
arch_timer.c KVM: arm64: timer: Add support for SW-based deactivation 2021-06-01 10:46:00 +01:00
arm.c KVM: arm64: Treat PMCR_EL1.LC as RES1 on asymmetric systems 2022-08-25 11:40:29 +02:00
debug.c KVM: arm64: MDCR_EL2 is a 64-bit register 2021-08-20 11:12:17 +01:00
fpsimd.c KVM: arm64: Save/restore SVE state for nVHE 2021-03-18 14:23:12 +00:00
guest.c KVM: arm64: Reject 32bit user PSTATE on asymmetric systems 2022-08-25 11:40:29 +02:00
handle_exit.c KVM: arm64: Stop handle_exit() from handling HVC twice when an SError occurs 2022-02-08 18:34:06 +01:00
hypercalls.c KVM: arm64: Allow SMCCC_ARCH_WORKAROUND_3 to be discovered and migrated 2022-03-11 12:22:35 +01:00
inject_fault.c KVM: arm64: Move AArch32 exceptions over to AArch64 sysregs 2020-11-10 11:22:51 +00:00
irq.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 422 2019-06-05 17:37:15 +02:00
Kconfig Merge branch kvm-arm64/generic-entry into kvmarm-master/next 2021-08-20 12:23:09 +01:00
Makefile KVM: stats: Add fd-based API to read binary stats data 2021-06-24 11:47:57 -04:00
mmio.c KVM: arm64: Make kvm_skip_instr() and co private to HYP 2020-11-10 08:34:24 +00:00
mmu.c KVM: arm64: Release mmap_lock when using VM_SHARED with MTE 2021-10-05 13:22:45 +01:00
perf.c KVM: arm64: Fix PMU probe ordering 2021-09-20 12:43:34 +01:00
pmu-emul.c KVM: arm64: Fix PMU probe ordering 2021-09-20 12:43:34 +01:00
pmu.c KVM: arm64: Disable PMU support in protected mode 2021-03-19 12:02:19 +00:00
psci.c KVM: arm64: Allow SMCCC_ARCH_WORKAROUND_3 to be discovered and migrated 2022-03-11 12:22:35 +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 Merge branch kvm-arm64/psci/cpu_on into kvmarm-master/next 2021-08-20 12:23:02 +01:00
sys_regs.c KVM: arm64: Treat PMCR_EL1.LC as RES1 on asymmetric systems 2022-08-25 11:40:29 +02:00
sys_regs.h KVM: arm64: Refactor sys_regs.h,c for nVHE reuse 2021-08-20 11:12:17 +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: Drop is_aarch32 trap attribute 2020-11-10 11:22:52 +00:00