Andre Przywara 27ea98a4c5 KVM: arm/arm64: VGIC/ITS: protect kvm_read_guest() calls with SRCU lock ... commit bf308242ab upstream. kvm_read_guest() will eventually look up in kvm_memslots(), which requires either to hold the kvm->slots_lock or to be inside a kvm->srcu critical section. In contrast to x86 and s390 we don't take the SRCU lock on every guest exit, so we have to do it individually for each kvm_read_guest() call. Provide a wrapper which does that and use that everywhere. Note that ending the SRCU critical section before returning from the kvm_read_guest() wrapper is safe, because the data has been *copied*, so we don't need to rely on valid references to the memslot anymore. Cc: Stable <stable@vger.kernel.org> # 4.8+ Reported-by: Jan Glauber <jan.glauber@caviumnetworks.com> Signed-off-by: Andre Przywara <andre.przywara@arm.com> Acked-by: Christoffer Dall <christoffer.dall@arm.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2018-05-22 18:53:57 +02:00
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hyp	kvm: arm/arm64: vgic-v3: Tighten synchronization for guests using v2 on v3	2018-03-21 12:06:43 +01:00
vgic	KVM: arm/arm64: VGIC/ITS: protect kvm_read_guest() calls with SRCU lock	2018-05-22 18:53:57 +02:00
aarch32.c	KVM: arm64: Make kvm_condition_valid32() accessible from EL2	2017-06-15 09:44:58 +01:00
arch_timer.c	KVM: arm/arm64: Reduce verbosity of KVM init log	2018-03-21 12:06:43 +01:00
arm.c	KVM: arm/arm64: Close VMID generation race	2018-05-01 12:58:22 -07:00
mmio.c	KVM: Fix stack-out-of-bounds read in write_mmio	2018-01-17 09:45:17 +01:00
mmu.c	KVM: arm/arm64: Reduce verbosity of KVM init log	2018-03-21 12:06:43 +01:00
perf.c	KVM: arm/arm64: Move shared files to virt/kvm/arm	2017-05-04 13:57:26 +02:00
pmu.c	KVM: arm/arm64: PMU: Fix overflow interrupt injection	2017-07-25 14:18:01 +01:00
psci.c	arm/arm64: KVM: Add PSCI version selection API	2018-05-01 12:58:27 -07:00
trace.h	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00