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7b444c6710
linux/arch/powerpc/kvm
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Paul Mackerras 7b444c6710 KVM: PPC: Book3S HV: Fix some races in starting secondary threads 
Subsequent patches implementing in-kernel XICS emulation will make it
possible for IPIs to arrive at secondary threads at arbitrary times.
This fixes some races in how we start the secondary threads, which
if not fixed could lead to occasional crashes of the host kernel.

This makes sure that (a) we have grabbed all the secondary threads,
and verified that they are no longer in the kernel, before we start
any thread, (b) that the secondary thread loads its vcpu pointer
after clearing the IPI that woke it up (so we don't miss a wakeup),
and (c) that the secondary thread clears its vcpu pointer before
incrementing the nap count.  It also removes unnecessary setting
of the vcpu and vcore pointers in the paca in kvmppc_core_vcpu_load.

Signed-off-by: Paul Mackerras <paulus@samba.org>
Signed-off-by: Alexander Graf <agraf@suse.de>
2012-10-30 10:54:54 +01:00
..
44x_emulate.c KVM: PPC: 44x: fix DCR read/write 2012-10-30 10:54:50 +01:00
44x_tlb.c KVM: do not release the error page 2012-08-06 16:04:58 +03:00
44x_tlb.h
44x.c KVM: PPC: 44x: Initialize PVR 2012-10-05 23:38:47 +02:00
book3s_32_mmu_host.c KVM: PPC: Book3s: PR: Add (dumb) MMU Notifier support 2012-10-05 23:38:43 +02:00
book3s_32_mmu.c KVM: PPC: Put segment registers in shared page 2010-10-24 10:52:11 +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_host.c KVM: PPC: Book3s: PR: Add (dumb) MMU Notifier support 2012-10-05 23:38:43 +02:00
book3s_64_mmu_hv.c KVM: Take kvm instead of vcpu to mmu_notifier_retry 2012-10-23 13:35:43 +02:00
book3s_64_mmu.c KVM: PPC: Interpret SDR1 as HVA in PAPR mode 2011-09-25 19:52:21 +03:00
book3s_64_slb.S KVM: PPC: Book3S: PR: No isync in slbie path 2012-05-06 16:19:09 +02:00
book3s_64_vio_hv.c kvm/book3s: Make kernel emulated H_PUT_TCE available for "PR" KVM 2012-05-06 16:19:11 +02:00
book3s_64_vio.c kvm/book3s: Make kernel emulated H_PUT_TCE available for "PR" KVM 2012-05-06 16:19:11 +02:00
book3s_emulate.c KVM: PPC: Emulator: clean up SPR reads and writes 2012-05-06 16:19:13 +02:00
book3s_exports.c powerpc: various straight conversions from module.h --> export.h 2011-10-31 19:30:44 -04:00
book3s_hv_builtin.c KVM: PPC: Quieten message about allocating linear regions 2012-10-05 23:38:40 +02:00
book3s_hv_interrupts.S KVM: PPC: Work around POWER7 DABR corruption problem 2012-04-08 14:01:36 +03:00
book3s_hv_rm_mmu.c KVM: Take kvm instead of vcpu to mmu_notifier_retry 2012-10-23 13:35:43 +02:00
book3s_hv_rmhandlers.S KVM: PPC: Book3S HV: Fix some races in starting secondary threads 2012-10-30 10:54:54 +01:00
book3s_hv.c KVM: PPC: Book3S HV: Fix some races in starting secondary threads 2012-10-30 10:54:54 +01:00
book3s_interrupts.S powerpc: Merge VCPU_GPR 2012-07-10 19:18:06 +10:00
book3s_mmu_hpte.c KVM: PPC: Book3s: PR: Add (dumb) MMU Notifier support 2012-10-05 23:38:43 +02:00
book3s_paired_singles.c powerpc/kvm: Fallout from system.h disintegration 2012-04-02 14:00:04 +10:00
book3s_pr_papr.c powerpc/kvm: Fix "PR" KVM implementation of H_CEDE 2012-07-11 17:36:38 +02:00
book3s_pr.c KVM: PPC: Book3S: Get/set guest FP regs using the GET/SET_ONE_REG interface 2012-10-05 23:38:54 +02:00
book3s_rmhandlers.S KVM: PPC: Book3S: PR: Rework irq disabling 2012-10-05 23:38:45 +02:00
book3s_segment.S powerpc: Move and fix MTMSR_EERI definition 2012-07-10 19:18:08 +10:00
book3s.c KVM: PPC: Book3S: Get/set guest FP regs using the GET/SET_ONE_REG interface 2012-10-05 23:38:54 +02:00
booke_emulate.c KVM: PPC: BookE: Add MCSR SPR support 2012-10-05 23:38:48 +02:00
booke_interrupts.S KVM updates for the 3.6 merge window 2012-07-24 12:01:20 -07:00
booke.c KVM: PPC: set IN_GUEST_MODE before checking requests 2012-10-05 23:38:54 +02:00
booke.h KVM: PPC: Emulator: clean up SPR reads and writes 2012-05-06 16:19:13 +02:00
bookehv_interrupts.S powerpc/kvm/bookehv: Fix build regression 2012-07-27 11:42:32 +10:00
e500_emulate.c KVM: PPC: booke: Added DECAR support 2012-05-30 11:43:11 +02:00
e500_tlb.c arch/powerpc/kvm/e500_tlb.c: fix error return code 2012-10-05 23:38:55 +02:00
e500.c KVM: PPC: e500: refactor core-specific TLB code 2012-04-08 12:51:12 +03:00
e500.h KVM: PPC: E500: Remove E500_TLB_DIRTY flag 2012-10-05 23:38:48 +02:00
e500mc.c KVM: PPC: e500mc: Fix tlbilx emulation for 64-bit guests 2012-07-11 17:39:38 +02:00
emulate.c KVM: PPC: Move mtspr/mfspr emulation into own functions 2012-10-30 10:54:51 +01:00
fpu.S
Kconfig KVM: PPC: Book3s: PR: Add (dumb) MMU Notifier support 2012-10-05 23:38:43 +02:00
Makefile kvm/book3s: Make kernel emulated H_PUT_TCE available for "PR" KVM 2012-05-06 16:19:11 +02:00
powerpc.c KVM: PPC: set IN_GUEST_MODE before checking requests 2012-10-05 23:38:54 +02:00
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: PPC: Use symbols for exit trace 2012-10-05 23:38:48 +02:00