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linux/arch/powerpc/kvm
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Christoffer Dall b68bf84b71 KVM: Protect device ops->create and list_add with kvm->lock 
commit a28ebea2ad upstream.

KVM devices were manipulating list data structures without any form of
synchronization, and some implementations of the create operations also
suffered from a lack of synchronization.

Now when we've split the xics create operation into create and init, we
can hold the kvm->lock mutex while calling the create operation and when
manipulating the devices list.

The error path in the generic code gets slightly ugly because we have to
take the mutex again and delete the device from the list, but holding
the mutex during anon_inode_getfd or releasing/locking the mutex in the
common non-error path seemed wrong.

Signed-off-by: Christoffer Dall <christoffer.dall@linaro.org>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Acked-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Radim Krčmář <rkrcmar@redhat.com>
[bwh: Backported to 3.16:
 - Drop change to a failure path that doesn't exist in kvm_vgic_create() 
 - Adjust filename, context]
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
History 2019-03-25 17:32:35 +00:00
..
44x.c KVM: PPC: Add devname:kvm aliases for modules 2014-01-09 10:14:00 +01:00
44x_emulate.c kvm: powerpc: Add kvmppc_ops callback 2013-10-17 15:24:26 +02:00
44x_tlb.c kvm: powerpc: Add kvmppc_ops callback 2013-10-17 15:24:26 +02:00
44x_tlb.h KVM: ppc: rename 44x MMU functions used in booke.c 2009-03-24 11:02:56 +02:00
book3s.c At over 200 commits, covering almost all supported architectures, this 2014-06-04 08:47:12 -07:00
book3s.h kvm: powerpc: book3s: Allow the HV and PR selection per virtual machine 2013-10-17 18:42:36 +02:00
book3s_32_mmu.c KVM: PPC: Book3S PR: Do dcbz32 patching with big endian instructions 2014-05-30 14:26:21 +02:00
book3s_32_mmu_host.c KVM: PPC: Make shared struct aka magic page guest endian 2014-05-30 14:26:21 +02:00
book3s_32_sr.S KVM: PPC: book3s_pr: Simplify transitions between virtual and real mode 2011-09-25 19:52:29 +03:00
book3s_64_mmu.c KVM: PPC: Disable NX for old magic page using guests 2014-05-30 14:26:24 +02:00
book3s_64_mmu_host.c KVM: PPC: Book3S PR: Use SLB entry 0 2014-05-30 14:26:30 +02:00
book3s_64_mmu_hv.c KVM: PPC: Book3S HV: Don't truncate HPTE index in xlate function 2018-12-16 22:08:49 +00:00
book3s_64_slb.S KVM: PPC: Book3S PR: Rework SLB switching code 2014-05-30 14:26:30 +02:00
book3s_64_vio.c ppc: kvm: use anon_inode_getfd() with O_CLOEXEC flag 2013-08-26 13:19:56 +03:00
book3s_64_vio_hv.c KVM: PPC: Book3S: Introduce hypervisor call H_GET_TCE 2014-03-26 23:34:27 +11:00
book3s_emulate.c KVM: PPC: Book3s PR: Allow access to unprivileged MMCR2 register 2017-02-23 03:54:05 +00:00
book3s_exports.c KVM: PPC: Make shared struct aka magic page guest endian 2014-05-30 14:26:21 +02:00
book3s_hv.c KVM: PPC: Book3S HV: Enable TM before accessing TM registers 2017-11-11 13:33:07 +00:00
book3s_hv_builtin.c powerpc/kvm/book3s_hv: Rework the secondary inhibit code 2014-05-28 13:35:34 +10:00
book3s_hv_cma.c powerpc/kvm: Use 256K chunk to track both RMA and hash page table allocation. 2013-07-08 16:21:13 +02:00
book3s_hv_cma.h powerpc/kvm: Use 256K chunk to track both RMA and hash page table allocation. 2013-07-08 16:21:13 +02:00
book3s_hv_interrupts.S powerpc/kvm: Remove redundant save of SIER AND MMCR2 2014-07-11 12:55:07 +10:00
book3s_hv_ras.c powerpc/book3s: Fix guest MC delivery mechanism to avoid soft lockups in guest. 2014-06-11 19:15:15 +10:00
book3s_hv_rm_mmu.c KVM: PPC: BOOK3S: HV: Use base page size when comparing against slb value 2014-06-25 14:07:06 +02:00
book3s_hv_rm_xics.c KVM: PPC: Book3S HV: Add support for real mode ICP in XICS emulation 2013-04-26 20:27:32 +02:00
book3s_hv_rmhandlers.S KVM: PPC: Book3S HV: Save/restore XER in checkpointed register state 2017-03-16 02:26:24 +00:00
book3s_interrupts.S KVM: PPC: Book3S PR: Fix svcpu copying with preemption enabled 2018-06-16 22:22:04 +01:00
book3s_mmu_hpte.c kvm: powerpc: book3s: pr: move PR related tracepoints to a separate header 2013-10-17 15:36:22 +02:00
book3s_paired_singles.c KVM: PPC: Make shared struct aka magic page guest endian 2014-05-30 14:26:21 +02:00
book3s_pr.c KVM: PPC: Book3S PR: Fix svcpu copying with preemption enabled 2018-06-16 22:22:04 +01:00
book3s_pr_papr.c KVM: PPC: Make shared struct aka magic page guest endian 2014-05-30 14:26:21 +02:00
book3s_rmhandlers.S KVM: PPC: Book3S PR: Fix ABIv2 on LE 2014-07-07 12:02:51 +02:00
book3s_rtas.c KVM: PPC: RTAS: Do byte swaps explicitly 2014-07-07 23:17:20 +02:00
book3s_segment.S KVM: PPC: Book3S PR: Handle Facility interrupt and FSCR 2014-05-30 14:26:22 +02:00
book3s_xics.c KVM: Protect device ops->create and list_add with kvm->lock 2019-03-25 17:32:35 +00:00
book3s_xics.h KVM: PPC: Book3S: Add API for in-kernel XICS emulation 2013-05-02 15:28:36 +02:00
booke.c KVM: PPC: BookE: Fix a sanity check 2017-02-23 03:54:04 +00:00
booke.h KVM: PPC: Load/save FP/VMX/VSX state directly to/from vcpu struct 2014-01-09 10:15:02 +01:00
booke_emulate.c KVM: PPC: BookE: Emulate mfspr on EPR 2013-01-10 13:42:30 +01:00
booke_interrupts.S KVM: PPC: booke: Added debug handler 2013-03-22 01:21:09 +01:00
bookehv_interrupts.S powerpc/booke64: Use SPRG_TLB_EXFRAME on bolted handlers 2014-03-19 19:57:15 -05:00
e500.c KVM: PPC: Add devname:kvm aliases for modules 2014-01-09 10:14:00 +01:00
e500.h kvm: powerpc: use caching attributes as per linux pte 2014-01-09 10:15:08 +01:00
e500_emulate.c KVM: PPC: E500: Add dcbtls emulation 2014-05-30 14:26:17 +02:00
e500_mmu.c KVM: PPC: e500: Fix bad address type in deliver_tlb_misss() 2014-01-27 16:00:54 +01:00
e500_mmu_host.c KVM: PPC: Book3E: Unlock mmu_lock when setting caching atttribute 2014-06-24 15:37:25 +02:00
e500_mmu_host.h KVM: PPC: E500: Make clear_tlb_refs and clear_tlb1_bitmap static 2013-01-24 19:23:33 +01:00
e500mc.c KVM: PPC: Add devname:kvm aliases for modules 2014-01-09 10:14:00 +01:00
emulate.c KVM: PPC: Make shared struct aka magic page guest endian 2014-05-30 14:26:21 +02:00
fpu.S powerpc: Remove fpscr use from [kvm_]cvt_{fd,df} 2010-09-02 14:07:32 +10:00
irq.h KVM: PPC: Book3S: Add API for in-kernel XICS emulation 2013-05-02 15:28:36 +02:00
Kconfig KVM: PPC: Book3S: Move little endian conflict to HV KVM 2014-05-30 14:26:21 +02:00
Makefile kvm: powerpc: book3s: Support building HV and PR KVM as module 2013-10-17 15:45:35 +02:00
mpic.c KVM: PPC: MPIC: Reset IRQ source private members 2014-05-30 14:26:26 +02:00
powerpc.c Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc 2014-06-10 18:54:22 -07:00
timing.c KVM: PPC: fix partial application of "exit timing in ticks" 2011-07-12 13:16:28 +03:00
timing.h KVM: PPC: booke: category E.HV (GS-mode) support 2012-04-08 12:51:19 +03:00
trace.h kvm: powerpc: booke: Move booke related tracepoints to separate header 2013-10-17 15:37:16 +02:00
trace_booke.h kvm: powerpc: booke: Move booke related tracepoints to separate header 2013-10-17 15:37:16 +02:00
trace_pr.h KVM: PPC: Make shared struct aka magic page guest endian 2014-05-30 14:26:21 +02:00