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
..
boot	regulator: Updates for v5.12	2021-02-22 09:16:38 -08:00
configs	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/hid/hid	2021-02-23 14:52:22 -08:00
crypto	crypto: arm64/crc-t10dif - move NEON yield to C code	2021-02-10 17:55:58 +11:00
include	KVM: arm64: Disable guest access to trace filter controls	2021-03-24 17:26:38 +00:00
kernel	KVM: arm64: Hide system instruction access to Trace registers	2021-03-24 17:26:38 +00:00
kvm	KVM: arm64: Fix CPU interface MMIO compatibility detection	2021-03-24 17:26:38 +00:00
lib	arm64: kasan: simplify and inline MTE functions	2021-02-26 09:41:03 -08:00
mm	arm64: mm: use a 48-bit ID map when possible on 52-bit VA builds	2021-03-11 13:04:28 +00:00
net	bpf: Rename BPF_XADD and prepare to encode other atomics in .imm	2021-01-14 18:34:29 -08:00
xen
Kbuild
Kconfig	arm64/mm: Drop THP conditionality from FORCE_MAX_ZONEORDER	2021-03-08 13:03:54 +00:00
Kconfig.debug
Kconfig.platforms	Updates for the irq subsystem:	2021-02-21 11:53:06 -08:00
Makefile	arm64: do not descend to vdso directories twice	2021-01-20 12:18:46 +00:00