Oliver Upton 78a0055555 KVM: arm64: Ensure vgic_ready() is ordered against MMIO registration ... kvm_vgic_map_resources() prematurely marks the distributor as 'ready', potentially allowing vCPUs to enter the guest before the distributor's MMIO registration has been made visible. Plug the race by marking the distributor as ready only after MMIO registration is completed. Rely on the implied ordering of synchronize_srcu() to ensure the MMIO registration is visible before vgic_dist::ready. This also means that writers to vgic_dist::ready are now serialized by the slots_lock, which was effectively the case already as all writers held the slots_lock in addition to the config_lock. Fixes: 59112e9c39 ("KVM: arm64: vgic: Fix a circular locking issue") Signed-off-by: Oliver Upton <oliver.upton@linux.dev> Link: https://lore.kernel.org/r/20241017001947.2707312-3-oliver.upton@linux.dev Signed-off-by: Marc Zyngier <maz@kernel.org>		2024-10-17 09:20:48 +01:00
..
hyp	KVM: arm64: Shave a few bytes from the EL2 idmap code	2024-10-17 09:17:56 +01:00
vgic	KVM: arm64: Ensure vgic_ready() is ordered against MMIO registration	2024-10-17 09:20:48 +01:00
.gitignore
arch_timer.c
arm.c	KVM: arm64: Don't eagerly teardown the vgic on init error	2024-10-11 13:40:25 +01:00
at.c
debug.c
emulate-nested.c
fpsimd.c
guest.c
handle_exit.c
hypercalls.c
inject_fault.c
Kconfig
Makefile
mmio.c
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
pkvm.c
pmu-emul.c
pmu.c
psci.c
ptdump.c
pvtime.c
reset.c
stacktrace.c
sys_regs.c	KVM: arm64: Fix shift-out-of-bounds bug	2024-10-17 09:20:13 +01:00
sys_regs.h
trace.h
trace_arm.h
trace_handle_exit.h
trng.c
va_layout.c
vgic-sys-reg-v3.c
vmid.c