Marc Zyngier 3e6245ebe7 KVM: arm64: Make ICC_*SGI*_EL1 undef in the absence of a vGICv3 ...

On a system with a GICv3, if a guest hasn't been configured with
GICv3 and that the host is not capable of GICv2 emulation,
a write to any of the ICC_*SGI*_EL1 registers is trapped to EL2.

We therefore try to emulate the SGI access, only to hit a NULL
pointer as no private interrupt is allocated (no GIC, remember?).

The obvious fix is to give the guest what it deserves, in the
shape of a UNDEF exception.

Reported-by: Alexander Potapenko <glider@google.com>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Cc: stable@vger.kernel.org
Link: https://lore.kernel.org/r/20240820100349.3544850-2-maz@kernel.org
Signed-off-by: Oliver Upton <oliver.upton@linux.dev>

2024-08-22 08:08:37 +00:00

..

hyp

KVM: arm64: Tidying up PAuth code in KVM

2024-08-07 19:11:05 +00:00

vgic

KVM: arm64: Make ICC_*SGI*_EL1 undef in the absence of a vGICv3

2024-08-22 08:08:37 +00:00

.gitignore

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arch_timer.c

KVM: arm64: Fix typos

2024-02-24 09:13:33 +00:00

arm.c

KVM: arm64: Tidying up PAuth code in KVM

2024-08-07 19:11:05 +00:00

debug.c

KVM: arm64: debug: fix kernel-doc warnings

2024-02-01 20:25:41 +00:00

emulate-nested.c

Merge branch kvm-arm64/nv-tcr2 into kvmarm/next

2024-07-14 00:28:37 +00:00

fpsimd.c

KVM: arm64: nv: Ensure correct VL is loaded before saving SVE state

2024-06-20 19:02:40 +00:00

guest.c

KVM: arm64: Allow AArch32 PSTATE.M to be restored as System mode

2024-05-27 17:45:35 +01:00

handle_exit.c

Merge branch kvm-arm64/nv-sve into kvmarm/next

2024-07-14 00:27:06 +00:00

hypercalls.c

Merge branch kvm-arm64/smccc-filter-cleanups into kvmarm/next

2023-10-30 20:18:37 +00:00

inject_fault.c

KVM: arm64: Fix typos

2024-02-24 09:13:33 +00:00

Kconfig

KVM: arm64: Enforce dependency on an ARMv8.4-aware toolchain

2024-08-07 19:09:35 +00:00

Makefile

KVM: arm64: fix override-init warnings in W=1 builds

2024-08-02 18:58:03 +00:00

mmio.c

KVM: arm64: Force injection of a data abort on NISV MMIO exit

2024-05-01 16:48:15 +01:00

mmu.c

KVM: arm64: Ensure canonical IPA is hugepage-aligned when handling fault

2024-08-22 07:41:00 +00:00

nested.c

KVM: arm64: free kvm->arch.nested_mmus with kvfree()

2024-08-02 18:57:30 +00:00

pauth.c

KVM: arm64: nv: Work around lack of pauth support in old toolchains

2024-04-23 19:27:11 +01:00

pkvm.c

KVM: arm64: Prevent kmemleak from accessing .hyp.data

2024-05-01 16:48:14 +01:00

pmu-emul.c

Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm

2024-07-20 12:41:03 -07:00

pmu.c

KVM: arm64: Add accessor for per-CPU state

2024-04-12 13:57:30 +01:00

psci.c

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pvtime.c

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reset.c

KVM: arm64: nv: Support multiple nested Stage-2 mmu structures

2024-06-19 08:13:49 +00:00

stacktrace.c

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sys_regs.c

KVM: arm64: Make ICC_*SGI*_EL1 undef in the absence of a vGICv3

2024-08-22 08:08:37 +00:00

sys_regs.h

KVM: arm64: Rename __check_nv_sr_forward() to triage_sysreg_trap()

2024-02-19 17:13:01 +00:00

trace_arm.h

KVM: arm64: Add tracepoint for MMIO accesses where ISV==0

2023-10-30 20:17:22 +00:00

trace_handle_exit.h

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trace.h

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trng.c

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va_layout.c

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vgic-sys-reg-v3.c

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vmid.c

KVM: arm64: Reload stage-2 for VMID change on VHE

2023-10-20 17:52:01 +00:00