Marc Zyngier af22df997d KVM: arm64: Fix CPU interface MMIO compatibility detection ... In order to detect whether a GICv3 CPU interface is MMIO capable, we switch ICC_SRE_EL1.SRE to 0 and check whether it sticks. However, this is only possible if *ALL* of the HCR_EL2 interrupt overrides are set, and the CPU is perfectly allowed to ignore the write to ICC_SRE_EL1 otherwise. This leads KVM to pretend that a whole bunch of ARMv8.0 CPUs aren't MMIO-capable, and breaks VMs that should work correctly otherwise. Fix this by setting IMO/FMO/IMO before touching ICC_SRE_EL1, and clear them afterwards. This allows us to reliably detect the CPU interface capabilities. Tested-by: Shameerali Kolothum Thodi <shameerali.kolothum.thodi@huawei.com> Fixes: 9739f6ef05 ("KVM: arm64: Workaround firmware wrongly advertising GICv2-on-v3 compatibility") Signed-off-by: Marc Zyngier <maz@kernel.org>		2021-03-24 17:26:38 +00:00
..
include	KVM: arm64: Don't access PMSELR_EL0/PMUSERENR_EL0 when no PMU is available	2021-03-06 04:18:40 -05:00
nvhe	More fixes for ARM and x86.	2021-03-14 12:35:02 -07:00
vhe	KVM: arm64: Ensure I-cache isolation between vcpus of a same VM	2021-03-09 17:58:56 +00:00
aarch32.c	KVM: arm64: Move kvm_vcpu_trap_il_is32bit into kvm_skip_instr32()	2020-11-10 08:34:24 +00:00
entry.S	KVM: arm64: Don't use cbz/adr with external symbols	2021-03-09 08:48:24 +00:00
exception.c	KVM: arm64: Inject AArch32 exceptions from HYP	2020-11-10 08:34:26 +00:00
fpsimd.S	KVM: arm64: Remove __hyp_text macro, use build rules instead	2020-07-05 18:38:45 +01:00
hyp-entry.S	KVM: arm64: make the hyp vector table entries local	2021-02-24 11:20:43 +00:00
Makefile	KVM: arm64: Allocate hyp vectors statically	2020-11-16 10:43:05 +00:00
pgtable.c	KVM: arm64: Fix range alignment when walking page tables	2021-03-06 04:18:41 -05:00
vgic-v2-cpuif-proxy.c	KVM: arm64: Remove hyp_symbol_addr	2021-01-23 14:01:00 +00:00
vgic-v3-sr.c	KVM: arm64: Fix CPU interface MMIO compatibility detection	2021-03-24 17:26:38 +00:00