Paul Mackerras 5390e7fa84 KVM: PPC: Book3S HV: Don't take kvm->lock around kvm_for_each_vcpu ... [ Upstream commit 5a3f49364c ] Currently the HV KVM code takes the kvm->lock around calls to kvm_for_each_vcpu() and kvm_get_vcpu_by_id() (which can call kvm_for_each_vcpu() internally). However, that leads to a lock order inversion problem, because these are called in contexts where the vcpu mutex is held, but the vcpu mutexes nest within kvm->lock according to Documentation/virtual/kvm/locking.txt. Hence there is a possibility of deadlock. To fix this, we simply don't take the kvm->lock mutex around these calls. This is safe because the implementations of kvm_for_each_vcpu() and kvm_get_vcpu_by_id() have been designed to be able to be called locklessly. Signed-off-by: Paul Mackerras <paulus@ozlabs.org> Reviewed-by: Cédric Le Goater <clg@kaod.org> Signed-off-by: Paul Mackerras <paulus@ozlabs.org> Signed-off-by: Sasha Levin <sashal@kernel.org>		2019-06-22 08:16:18 +02:00
..
Kconfig	…
Makefile	…
book3s.c	KVM: PPC: Book3S: Use new mutex to synchronize access to rtas token list	2019-06-22 08:16:17 +02:00
book3s.h	…
book3s_32_mmu.c	…
book3s_32_mmu_host.c	…
book3s_32_sr.S	…
book3s_64_mmu.c	…
book3s_64_mmu_host.c	…
book3s_64_mmu_hv.c	KVM: PPC: Book3S HV: Don't truncate HPTE index in xlate function	2018-10-10 08:54:19 +02:00
book3s_64_mmu_radix.c	KVM: PPC: Book3S HV: Fix handling of large pages in radix page fault handler	2018-05-16 10:10:31 +02:00
book3s_64_slb.S	…
book3s_64_vio.c	KVM: PPC: Check if IOMMU page is contained in the pinned physical page	2018-07-28 07:55:41 +02:00
book3s_64_vio_hv.c	KVM: PPC: Check if IOMMU page is contained in the pinned physical page	2018-07-28 07:55:41 +02:00
book3s_emulate.c	…
book3s_exports.c	…
book3s_hv.c	KVM: PPC: Book3S HV: Don't take kvm->lock around kvm_for_each_vcpu	2019-06-22 08:16:18 +02:00
book3s_hv_builtin.c	…
book3s_hv_hmi.c	…
book3s_hv_interrupts.S	…
book3s_hv_ras.c	…
book3s_hv_rm_mmu.c	…
book3s_hv_rm_xics.c	…
book3s_hv_rm_xive.c	…
book3s_hv_rmhandlers.S	KVM: PPC: Book3S HV: Fix trap number return from __kvmppc_vcore_entry	2018-05-16 10:10:25 +02:00
book3s_interrupts.S	…
book3s_mmu_hpte.c	…
book3s_paired_singles.c	…
book3s_pr.c	…
book3s_pr_papr.c	…
book3s_rmhandlers.S	…
book3s_rtas.c	KVM: PPC: Book3S: Use new mutex to synchronize access to rtas token list	2019-06-22 08:16:17 +02:00
book3s_segment.S	…
book3s_xics.c	…
book3s_xics.h	…
book3s_xive.c	KVM: PPC: Book3S HV: XIVE: Do not clear IRQ data of passthrough interrupts	2019-06-09 09:18:16 +02:00
book3s_xive.h	…
book3s_xive_template.c	…
booke.c	…
booke.h	…
booke_emulate.c	…
booke_interrupts.S	…
bookehv_interrupts.S	powerpc/fsl: Flush branch predictor when entering KVM	2019-04-03 06:25:14 +02:00
e500.c	…
e500.h	…
e500_emulate.c	powerpc/fsl: Emulate SPRN_BUCSR register	2019-04-03 06:25:14 +02:00
e500_mmu.c	…
e500_mmu_host.c	…
e500_mmu_host.h	…
e500mc.c	…
emulate.c	…
emulate_loadstore.c	…
fpu.S	…
irq.h	…
mpic.c	…
powerpc.c	KVM: s390: Do not report unusabled IDs via KVM_CAP_MAX_VCPU_ID	2019-06-09 09:18:16 +02:00
timing.c	…
timing.h	…
trace.h	KVM: PPC: Move and undef TRACE_INCLUDE_PATH/FILE	2018-12-01 09:42:53 +01:00
trace_book3s.h	…
trace_booke.h	KVM: PPC: Move and undef TRACE_INCLUDE_PATH/FILE	2018-12-01 09:42:53 +01:00
trace_hv.h	KVM: PPC: Move and undef TRACE_INCLUDE_PATH/FILE	2018-12-01 09:42:53 +01:00
trace_pr.h	KVM: PPC: Move and undef TRACE_INCLUDE_PATH/FILE	2018-12-01 09:42:53 +01:00