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Paul Mackerras b5c6f7607b KVM: PPC: Book3S HV: Read kvm->arch.emul_smt_mode under kvm->lock 
Commit 1e175d2 ("KVM: PPC: Book3S HV: Pack VCORE IDs to access full
VCPU ID space", 2018-07-25) added code that uses kvm->arch.emul_smt_mode
before any VCPUs are created.  However, userspace can change
kvm->arch.emul_smt_mode at any time up until the first VCPU is created.
Hence it is (theoretically) possible for the check in
kvmppc_core_vcpu_create_hv() to race with another userspace thread
changing kvm->arch.emul_smt_mode.

This fixes it by moving the test that uses kvm->arch.emul_smt_mode into
the block where kvm->lock is held.

Signed-off-by: Paul Mackerras <paulus@ozlabs.org>
2018-07-26 15:38:41 +10:00
..
book3s_32_mmu_host.c
powerpc/mm: Move hash related mmu-*.h headers to book3s/
2016-03-03 21:19:21 +11:00
book3s_32_mmu.c
KVM: PPC: Move nip/ctr/lr/xer registers to pt_regs in kvm_vcpu_arch
2018-05-18 15:38:23 +10:00
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_host.c
* ARM: HYP mode stub supports kexec/kdump on 32-bit; improved PMU
2017-05-08 12:37:56 -07:00
book3s_64_mmu_hv.c
Merge tag 'kvm-ppc-next-4.18-2' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc into HEAD
2018-06-14 17:42:54 +02:00
book3s_64_mmu_radix.c
powerpc updates for 4.18
2018-06-07 10:23:33 -07:00
book3s_64_mmu.c
KVM: PPC: Book3S PR: Transition to Suspended state when injecting interrupt
2018-06-01 10:29:22 +10:00
book3s_64_slb.S
KVM: PPC: Book3S: Fix gas warning due to using r0 as immediate 0
2017-11-01 15:17:25 +11:00
book3s_64_vio_hv.c
KVM: PPC: Add pt_regs into kvm_vcpu_arch and move vcpu->arch.gpr[] into it
2018-05-18 15:38:23 +10:00
book3s_64_vio.c
KVM: PPC: Book3S: Fix matching of hardware and emulated TCE tables
2018-07-18 15:14:45 +10:00
book3s_emulate.c
KVM: PPC: Book3S PR: Fix failure status setting in tabort. emulation
2018-06-13 09:46:13 +10:00
book3s_exports.c
KVM: PPC: Make shared struct aka magic page guest endian
2014-05-30 14:26:21 +02:00
book3s_hv_builtin.c
KVM: PPC: Book3S HV: Send kvmppc_bad_interrupt NMIs to Linux handlers
2018-05-18 15:38:23 +10:00
book3s_hv_hmi.c
powerpc: move hmi.c to arch/powerpc/kvm/
2016-09-09 16:18:07 +10:00
book3s_hv_interrupts.S
KVM: PPC: Book3S HV: Fix inaccurate comment
2018-05-17 16:36:56 +10:00
book3s_hv_ras.c
Merge branch 'topic/ppc-kvm' into next
2018-01-21 22:43:43 +11:00
book3s_hv_rm_mmu.c
KVM: PPC: Book3S HV: Lockless tlbie for HPT hcalls
2018-05-18 15:38:23 +10:00
book3s_hv_rm_xics.c
KVM: PPC: Add pt_regs into kvm_vcpu_arch and move vcpu->arch.gpr[] into it
2018-05-18 15:38:23 +10:00
book3s_hv_rm_xive.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
book3s_hv_rmhandlers.S
Merge tag 'kvm-ppc-next-4.18-2' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc into HEAD
2018-06-14 17:42:54 +02:00
book3s_hv_tm_builtin.c
KVM: PPC: Move nip/ctr/lr/xer registers to pt_regs in kvm_vcpu_arch
2018-05-18 15:38:23 +10:00
book3s_hv_tm.c
KVM: PPC: Move nip/ctr/lr/xer registers to pt_regs in kvm_vcpu_arch
2018-05-18 15:38:23 +10:00
book3s_hv.c
KVM: PPC: Book3S HV: Read kvm->arch.emul_smt_mode under kvm->lock
2018-07-26 15:38:41 +10:00
book3s_interrupts.S
KVM: PPC: Book3S PR: Fix svcpu copying with preemption enabled
2018-02-01 13:35:33 +11:00
book3s_mmu_hpte.c
sched/headers: Prepare to use <linux/rcuupdate.h> instead of <linux/rculist.h> in <linux/sched.h>
2017-03-02 08:42:38 +01:00
book3s_paired_singles.c
powerpc: Create disable_kernel_{fp,altivec,vsx,spe}()
2015-12-01 13:52:25 +11:00
book3s_pr_papr.c
KVM: PPC: Book3S PR: Enable in-kernel TCE handlers for PR KVM
2017-10-14 16:38:19 +11:00
book3s_pr.c
KVM: PPC: Book3S PR: Enable use on POWER9 bare-metal hosts in HPT mode
2018-06-13 09:45:28 +10:00
book3s_rmhandlers.S
powerpc/64s: Simple RFI macro conversions
2018-01-10 03:07:30 +11:00
book3s_rtas.c
KVM: PPC: Book3S HV: Native usage of the XIVE interrupt controller
2017-04-27 21:37:29 +10:00
book3s_segment.S
KVM: PPC: Book3S PR: Avoid changing TS bits when exiting guest
2018-06-01 10:29:42 +10:00
book3s_xics.c
powerpc: Use octal numbers for file permissions
2018-01-22 05:48:33 +11:00
book3s_xics.h
KVM: PPC: Book3S HV: Native usage of the XIVE interrupt controller
2017-04-27 21:37:29 +10:00
book3s_xive_template.c
KVM: PPC: Add pt_regs into kvm_vcpu_arch and move vcpu->arch.gpr[] into it
2018-05-18 15:38:23 +10:00
book3s_xive.c
KVM: PPC: Book3S HV: Pack VCORE IDs to access full VCPU ID space
2018-07-26 13:23:52 +10:00
book3s_xive.h
KVM: PPC: Book3S HV: Enable use of the new XIVE "single escalation" feature
2018-01-19 12:10:21 +11:00
book3s.c
KVM: PPC: Book3S PR: Fix MSR setting when delivering interrupts
2018-06-13 09:45:28 +10:00
book3s.h
KVM: PPC: Book3S PR: Add guard code to prevent returning to guest with PR=0 and Transactional state
2018-06-01 10:30:39 +10:00
booke_emulate.c
KVM: PPC: Move nip/ctr/lr/xer registers to pt_regs in kvm_vcpu_arch
2018-05-18 15:38:23 +10:00
booke_interrupts.S
KVM: PPC: Remove 440 support
2014-07-28 15:23:15 +02:00
booke.c
KVM: PPC: Move nip/ctr/lr/xer registers to pt_regs in kvm_vcpu_arch
2018-05-18 15:38:23 +10:00
booke.h
KVM: PPC: Book3e: Add AltiVec support
2014-09-22 10:11:32 +02:00
bookehv_interrupts.S
powerpc/kvm: common sw breakpoint instr across ppc
2014-09-22 10:11:36 +02:00
e500_emulate.c
KVM: PPC: Move nip/ctr/lr/xer registers to pt_regs in kvm_vcpu_arch
2018-05-18 15:38:23 +10:00
e500_mmu_host.c
KVM: PPC: Reimplement non-SIMD LOAD/STORE instruction mmio emulation with analyse_instr() input
2018-05-22 19:51:08 +10:00
e500_mmu_host.h
KVM: PPC: E500: Make clear_tlb_refs and clear_tlb1_bitmap static
2013-01-24 19:23:33 +01:00
e500_mmu.c
KVM: PPC: Move nip/ctr/lr/xer registers to pt_regs in kvm_vcpu_arch
2018-05-18 15:38:23 +10:00
e500.c
KVM: PPC: e500: Fix some NULL dereferences on error
2017-08-31 12:36:44 +10:00
e500.h
kvm: rename pfn_t to kvm_pfn_t
2016-01-15 17:56:32 -08:00
e500mc.c
KVM: PPC: e500mc: Fix a NULL dereference
2017-08-31 12:36:44 +10:00
emulate_loadstore.c
KVM: PPC: Remove mmio_vsx_tx_sx_enabled in KVM MMIO emulation
2018-07-18 15:14:45 +10:00
emulate.c
powerpc/64s: Remove POWER4 support
2018-04-01 00:47:50 +11:00
fpu.S
…
irq.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
Kconfig
Second PPC KVM update for 4.16
2018-02-09 22:03:06 +01:00
Makefile
KVM: PPC: Book3S PR: Move kvmppc_save_tm/kvmppc_restore_tm to separate file
2018-05-31 11:35:12 +10:00
mpic.c
Replace <asm/uaccess.h> with <linux/uaccess.h> globally
2016-12-24 11:46:01 -08:00
powerpc.c
KVM: PPC: Remove mmio_vsx_tx_sx_enabled in KVM MMIO emulation
2018-07-18 15:14:45 +10:00
timing.c
KVM: PPC: Use seq_puts() in kvmppc_exit_timing_show()
2018-01-11 20:36:06 +11:00
timing.h
KVM: PPC: Remove DCR handling
2014-07-28 19:29:15 +02:00
tm.S
KVM: PPC: Book3S PR: Support TAR handling for PR KVM HTM
2018-06-01 10:30:43 +10:00
trace_book3s.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
trace_booke.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
trace_hv.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
trace_pr.h
KVM: PPC: Remove unused kvm_unmap_hva callback
2018-03-19 10:08:29 +11:00
trace.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00