AuxXxilium/linux_dsm_epyc7002
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linux_dsm_epyc7002/arch/mips/kvm
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Davidlohr Bueso 4c0b4bc60f kvm,mips: Fix potential swait_active() races 
For example, the following could occur, making us miss a wakeup:

CPU0					CPU1
kvm_vcpu_block				kvm_mips_comparecount_func
					  [L] swait_active(&vcpu->wq)
  [S] prepare_to_swait(&vcpu->wq)
  [L] if (!kvm_vcpu_has_pending_timer(vcpu))
         schedule()                       [S] queue_timer_int(vcpu)

Ensure that the swait_active() check is not hoisted over the interrupt.

Signed-off-by: Davidlohr Bueso <dbueso@suse.de>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2017-09-15 16:57:13 +02:00
..
00README.txt
callback.c MIPS: KVM: Convert EXPORT_SYMBOL to _GPL 2016-01-24 03:13:24 +01:00
commpage.c MIPS: kvm: Audit and remove any unnecessary uses of module.h 2016-10-05 01:31:20 +02:00
commpage.h MIPS: KVM: Rename files to remove the prefix "kvm_" and "kvm_mips_" 2014-06-30 16:52:03 +02:00
dyntrans.c KVM: MIPS/T&E: Use lockless GVA helpers for dyntrans 2017-02-03 15:21:12 +00:00
emulate.c KVM: add kvm_{test,clear}_request to replace {test,clear}_bit 2017-04-27 14:12:22 +02:00
entry.c KVM: MIPS/Entry: Update entry code to support VZ 2017-03-28 14:53:51 +01:00
fpu.S MIPS: KVM: Fix fpu.S misassembly with r6 2016-07-05 16:09:11 +02:00
hypcall.c KVM: MIPS: Implement HYPCALL emulation 2017-03-28 14:53:33 +01:00
interrupt.c KVM: MIPS/T&E: Implement CP0_EBase register 2017-02-03 15:21:30 +00:00
interrupt.h KVM: MIPS: Implement VZ support 2017-03-28 14:53:54 +01:00
Kconfig KVM: MIPS: Add VZ support to build system 2017-03-28 14:53:54 +01:00
Makefile KVM: MIPS: Add VZ support to build system 2017-03-28 14:53:54 +01:00
mips.c kvm,mips: Fix potential swait_active() races 2017-09-15 16:57:13 +02:00
mmu.c KVM: MIPS: Implement VZ support 2017-03-28 14:53:54 +01:00
msa.S MIPS: KVM: Add base guest MSA support 2015-03-27 21:25:19 +00:00
stats.c MIPS: KVM: Clean up kvm_exit trace event 2016-06-14 11:16:23 +02:00
tlb.c KVM: MIPS: Fix maybe-uninitialized build failure 2017-06-20 17:02:48 +02:00
trace.h KVM: MIPS/VZ: Trace guest mode changes 2017-03-28 14:54:00 +01:00
trap_emul.c KVM: add kvm_request_pending 2017-06-04 16:53:00 +02:00
vz.c KVM: add kvm_request_pending 2017-06-04 16:53:00 +02:00