kernel.git/Documentation/virtual/kvm/locking.txt, branch linux-5.0.y

kvm: x86: mmu: Update documentation for fast page fault mechanism

2017-01-09T13:46:12Z

Add a brief description of the lockless access tracking mechanism to the documentation of fast page faults in locking.txt. Signed-off-by: Junaid Shahid Signed-off-by: Paolo Bonzini

KVM: hyperv: fix locking of struct kvm_hv fields

2016-12-16T16:53:38Z

Introduce a new mutex to avoid an AB-BA deadlock between kvm->lock and vcpu->mutex. Protect accesses in kvm_hv_setup_tsc_page too, as suggested by Roman. Reported-by: Dmitry Vyukov Reviewed-by: Roman Kagan Signed-off-by: Paolo Bonzini

KVM: document lock orders

2016-10-27T09:35:47Z

This is long overdue, and not really hard. Signed-off-by: Paolo Bonzini Message-Id: <1476357057-17899-1-git-send-email-pbonzini@redhat.com> Signed-off-by: Paolo Bonzini

KVM: x86: Fix typos

2016-06-14T09:16:28Z

Signed-off-by: Andrea Gelmini Signed-off-by: Paolo Bonzini

KVM: Update Posted-Interrupts Descriptor when vCPU is blocked

2015-10-01T13:06:53Z

This patch updates the Posted-Interrupts Descriptor when vCPU is blocked. pre-block: - Add the vCPU to the blocked per-CPU list - Set 'NV' to POSTED_INTR_WAKEUP_VECTOR post-block: - Remove the vCPU from the per-CPU list Signed-off-by: Feng Wu [Concentrate invocation of pre/post-block hooks to vcpu_block. - Paolo] Signed-off-by: Paolo Bonzini

KVM: doc: Fix typo in doc/virtual/kvm

2013-12-31T19:24:54Z

Correct spelling typo in Documentations/virtual/kvm Signed-off-by: Masanari Iida Acked-by: Randy Dunlap Signed-off-by: Marcelo Tosatti

KVM: Convert kvm_lock back to non-raw spinlock

2013-09-30T07:21:51Z

In commit e935b8372cf8 ("KVM: Convert kvm_lock to raw_spinlock"), the kvm_lock was made a raw lock. However, the kvm mmu_shrink() function tries to grab the (non-raw) mmu_lock within the scope of the raw locked kvm_lock being held. This leads to the following: BUG: sleeping function called from invalid context at kernel/rtmutex.c:659 in_atomic(): 1, irqs_disabled(): 0, pid: 55, name: kswapd0 Preemption disabled at:[] mmu_shrink+0x5c/0x1b0 [kvm] Pid: 55, comm: kswapd0 Not tainted 3.4.34_preempt-rt Call Trace: [] __might_sleep+0xfd/0x160 [] rt_spin_lock+0x24/0x50 [] mmu_shrink+0xec/0x1b0 [kvm] [] shrink_slab+0x17d/0x3a0 [] ? mem_cgroup_iter+0x130/0x260 [] balance_pgdat+0x54a/0x730 [] ? set_pgdat_percpu_threshold+0xa7/0xd0 [] kswapd+0x18f/0x490 [] ? get_parent_ip+0x11/0x50 [] ? __init_waitqueue_head+0x50/0x50 [] ? balance_pgdat+0x730/0x730 [] kthread+0xdb/0xe0 [] ? finish_task_switch+0x52/0x100 [] kernel_thread_helper+0x4/0x10 [] ? __init_kthread_worker+0x After the previous patch, kvm_lock need not be a raw spinlock anymore, so change it back. Reported-by: Paul Gortmaker Cc: kvm@vger.kernel.org Cc: gleb@redhat.com Cc: jan.kiszka@siemens.com Reviewed-by: Gleb Natapov Signed-off-by: Paolo Bonzini

KVM: protect kvm_usage_count with its own spinlock

2013-09-30T07:21:46Z

The VM list need not be protected by a raw spinlock. Separate the two so that kvm_lock can be made non-raw. Cc: kvm@vger.kernel.org Cc: gleb@redhat.com Cc: jan.kiszka@siemens.com Reviewed-by: Gleb Natapov Signed-off-by: Paolo Bonzini

KVM: Add documentation for kvm->srcu lock

2013-09-24T17:12:12Z

This patch documents the kvm->srcu lock (using the information from a mail which has been posted by Marcelo Tosatti to the kvm mailing list some months ago, see the following URL for details: http://www.mail-archive.com/kvm@vger.kernel.org/msg90040.html ) Signed-off-by: Thomas Huth Reviewed-by: Xiao Guangrong Signed-off-by: Paolo Bonzini

KVM: MMU: document mmu-lock and fast page fault

2012-07-11T13:51:23Z

Document fast page fault and mmu-lock in locking.txt Signed-off-by: Xiao Guangrong Signed-off-by: Avi Kivity