kernel/linux
0
Fork 0
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/ synced 2026-11-10 20:48:12 +00:00
Code Issues Releases Packages Activity
linux/arch/arm64/kvm
History
Marc Zyngier 2678ceed58 KVM: arm64: Make all 32bit ID registers fully writable 
commit 3f9eacf4f0 upstream.

32bit ID registers aren't getting much love these days, and are
often missed in updates. One of these updates broke restoring
a GICv2 guest on a GICv3 machine.

Instead of performing a piecemeal fix, just bite the bullet
and make all 32bit ID regs fully writable. KVM itself never
relies on them for anything, and if the VMM wants to mess up
the guest, so be it.

Fixes: 5cb57a1aff ("KVM: arm64: Zero ID_AA64PFR0_EL1.GIC when no GICv3 is presented to the guest")
Reported-by: Peter Maydell <peter.maydell@linaro.org>
Cc: stable@vger.kernel.org
Reviewed-by: Oliver Upton <oupton@kernel.org>
Link: https://patch.msgid.link/20251030122707.2033690-2-maz@kernel.org
Signed-off-by: Marc Zyngier <maz@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
History 2025-12-01 11:43:37 +01:00
..
hyp KVM: arm64: Check the untrusted offset in FF-A memory share 2025-12-01 11:43:18 +01:00
vgic KVM: arm64: vgic-its: Clear DTE when MAPD unmaps a device 2024-12-05 14:02:45 +01:00
.gitignore KVM: arm64: Generate hyp_constants.h for the host 2021-12-06 08:37:03 +00:00
arch_timer.c KVM: arm64: timer: Always evaluate the need for a soft timer 2025-02-17 10:05:05 +01:00
arm.c KVM: arm64: Tear down vGIC on failed vCPU creation 2025-04-20 10:15:34 +02:00
at.c KVM: arm64: nv: Add support for FEAT_ATS1A 2024-08-30 12:04:20 +01:00
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-at-pan into kvmarm-master/next 2024-09-12 08:37:47 +01:00
fpsimd.c KVM: arm64: Eagerly switch ZCR_EL{1,2} 2025-03-28 22:03:32 +01:00
guest.c KVM: arm64: Disallow copying MTE to guest memory while KVM is dirty logging 2024-08-13 19:29:17 +01:00
handle_exit.c Merge branch kvm-arm64/nv-sve into kvmarm/next 2024-07-14 00:27:06 +00:00
hypercalls.c KVM: arm64: Use kvm_has_feat() to check if FEAT_SSBS is advertised to the guest 2024-08-25 17:48:44 +01:00
inject_fault.c KVM: arm64: Fix typos 2024-02-24 09:13:33 +00:00
Kconfig Merge branch kvm-arm64/s2-ptdump into kvmarm-master/next 2024-09-12 08:38:02 +01:00
Makefile Merge branch kvm-arm64/s2-ptdump into kvmarm-master/next 2024-09-12 08:38:02 +01:00
mmio.c KVM: arm64: Don't retire aborted MMIO instruction 2024-12-05 14:02:44 +01:00
mmu.c KVM: arm64: nv: Do not block when unmapping stage-2 if disallowed 2024-10-08 10:40:27 +01:00
nested.c KVM: arm64: nv: Punt stage-2 recycling to a vCPU request 2024-10-08 10:40:27 +01:00
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 KVM: arm64: Ignore PMCNTENSET_EL0 while checking for overflow status 2024-12-05 14:02:44 +01:00
pmu.c perf: arm_pmuv3: Add support for Armv9.4 PMU instruction counter 2024-08-16 13:09:12 +01:00
psci.c Merge branch kvm-arm64/smccc-filtering into kvmarm-master/next 2023-04-21 09:44:32 +01:00
ptdump.c KVM: arm64: Register ptdump with debugfs on guest creation 2024-09-10 21:32:51 +01:00
pvtime.c KVM: MMU: Make the definition of 'INVALID_GPA' common 2023-01-19 21:48:38 +00:00
reset.c KVM: arm64: nv: Support multiple nested Stage-2 mmu structures 2024-06-19 08:13:49 +00:00
stacktrace.c arm64: stacktrace: track hyp stacks in unwinder's address space 2022-09-09 12:30:08 +01:00
sys_regs.c KVM: arm64: Make all 32bit ID registers fully writable 2025-12-01 11:43:37 +01:00
sys_regs.h Merge branch kvm-arm64/visibility-cleanups into kvmarm-master/next 2024-09-12 08:38:17 +01:00
trace.h KVM: arm64: Move virt/kvm/arm to arch/arm64 2020-05-16 15:03:59 +01:00
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 KVM: arm64: Upgrade trace_kvm_arm_set_dreg32() to 64bit 2021-08-20 11:12:18 +01:00
trng.c KVM: arm64: Implement the TRNG hypervisor call 2021-01-25 22:19:31 +00:00
va_layout.c arm64: alternatives: kvm: prepare for cap changes 2022-09-16 17:15:02 +01:00
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: Ensure a VMID is allocated before programming VTTBR_EL2 2025-03-07 18:25:37 +01:00