kernel/git/stable/linux.git/arch/x86/kvm/timer.c, branch master

KVM: Remove internal timer abstraction

2012-08-01T03:21:06+00:00

kvm_timer_fn(), the sole inhabitant of timer.c, is only used by lapic.c. Move it there to make it easier to hack on it. struct kvm_timer is a thin wrapper around hrtimer, and only adds obfuscation. Move near its two users (with different names) to prepare for simplification. Signed-off-by: Avi Kivity Signed-off-by: Marcelo Tosatti

KVM: x86: Simplify kvm timer handler

2011-12-27T09:17:05+00:00

The vcpu reference of a kvm_timer can't become NULL while the timer is valid, so drop this redundant test. This also makes it pointless to carry a separate __kvm_timer_fn, fold it into kvm_timer_fn. Signed-off-by: Jan Kiszka Signed-off-by: Marcelo Tosatti

atomic: use

2011-07-26T23:49:47+00:00

This allows us to move duplicated code in (atomic_inc_not_zero() for now) to Signed-off-by: Arun Sharma Reviewed-by: Eric Dumazet Cc: Ingo Molnar Cc: David Miller Cc: Eric Dumazet Acked-by: Mike Frysinger Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

x86: Fix common misspellings

2011-03-18T09:39:30+00:00

They were generated by 'codespell' and then manually reviewed. Signed-off-by: Lucas De Marchi Cc: trivial@kernel.org LKML-Reference: <1300389856-1099-3-git-send-email-lucas.demarchi@profusion.mobi> Signed-off-by: Ingo Molnar

KVM: fix typo in copyright notice

2010-10-24T08:53:14+00:00

Fix typo in copyright notice. Signed-off-by: Nicolas Kaiser Signed-off-by: Marcelo Tosatti

KVM: Add mini-API for vcpu->requests

2010-08-01T07:47:05+00:00

Makes it a little more readable and hackable. Signed-off-by: Avi Kivity

KVM: Update Red Hat copyrights

2010-08-01T07:35:51+00:00

Signed-off-by: Avi Kivity

KVM: x86: document KVM_REQ_PENDING_TIMER usage

2010-05-17T09:16:40+00:00

Document that KVM_REQ_PENDING_TIMER is implicitly used during guest entry. Signed-off-by: Marcelo Tosatti Signed-off-by: Avi Kivity

KVM: Drop useless atomic test from timer function

2009-09-10T05:32:57+00:00

The current code tries to optimize the setting of KVM_REQ_PENDING_TIMER but used atomic_inc_and_test - which always returns true unless pending had the invalid value of -1 on entry. This patch drops the test part preserving the original semantic but expressing it less confusingly. Signed-off-by: Jan Kiszka Signed-off-by: Avi Kivity

KVM: Fix racy event propagation in timer

2009-09-10T05:32:57+00:00

Minor issue that likely had no practical relevance: the kvm timer function so far incremented the pending counter and then may reset it again to 1 in case reinjection was disabled. This opened a small racy window with the corresponding VCPU loop that may have happened to run on another (real) CPU and already consumed the value. Fix it by skipping the incrementation in case pending is already > 0. This opens a different race windows, but may only rarely cause lost events in case we do not care about them anyway (!reinject). Signed-off-by: Jan Kiszka Signed-off-by: Avi Kivity