<feed xmlns='http://www.w3.org/2005/Atom'>
<title>linux-toradex.git/arch/x86/kvm/timer.c, branch v3.2.34</title>
<subtitle>Linux kernel for Apalis and Colibri modules</subtitle>
<link rel='alternate' type='text/html' href='https://git.toradex.cn/cgit/linux-toradex.git/'/>
<entry>
<title>atomic: use &lt;linux/atomic.h&gt;</title>
<updated>2011-07-26T23:49:47+00:00</updated>
<author>
<name>Arun Sharma</name>
<email>asharma@fb.com</email>
</author>
<published>2011-07-26T23:09:06+00:00</published>
<link rel='alternate' type='text/html' href='https://git.toradex.cn/cgit/linux-toradex.git/commit/?id=60063497a95e716c9a689af3be2687d261f115b4'/>
<id>60063497a95e716c9a689af3be2687d261f115b4</id>
<content type='text'>
This allows us to move duplicated code in &lt;asm/atomic.h&gt;
(atomic_inc_not_zero() for now) to &lt;linux/atomic.h&gt;

Signed-off-by: Arun Sharma &lt;asharma@fb.com&gt;
Reviewed-by: Eric Dumazet &lt;eric.dumazet@gmail.com&gt;
Cc: Ingo Molnar &lt;mingo@elte.hu&gt;
Cc: David Miller &lt;davem@davemloft.net&gt;
Cc: Eric Dumazet &lt;eric.dumazet@gmail.com&gt;
Acked-by: Mike Frysinger &lt;vapier@gentoo.org&gt;
Signed-off-by: Andrew Morton &lt;akpm@linux-foundation.org&gt;
Signed-off-by: Linus Torvalds &lt;torvalds@linux-foundation.org&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
This allows us to move duplicated code in &lt;asm/atomic.h&gt;
(atomic_inc_not_zero() for now) to &lt;linux/atomic.h&gt;

Signed-off-by: Arun Sharma &lt;asharma@fb.com&gt;
Reviewed-by: Eric Dumazet &lt;eric.dumazet@gmail.com&gt;
Cc: Ingo Molnar &lt;mingo@elte.hu&gt;
Cc: David Miller &lt;davem@davemloft.net&gt;
Cc: Eric Dumazet &lt;eric.dumazet@gmail.com&gt;
Acked-by: Mike Frysinger &lt;vapier@gentoo.org&gt;
Signed-off-by: Andrew Morton &lt;akpm@linux-foundation.org&gt;
Signed-off-by: Linus Torvalds &lt;torvalds@linux-foundation.org&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>x86: Fix common misspellings</title>
<updated>2011-03-18T09:39:30+00:00</updated>
<author>
<name>Lucas De Marchi</name>
<email>lucas.de.marchi@gmail.com</email>
</author>
<published>2011-03-17T19:24:16+00:00</published>
<link rel='alternate' type='text/html' href='https://git.toradex.cn/cgit/linux-toradex.git/commit/?id=0d2eb44f631d9d0a826efa3156f157477fdaecf4'/>
<id>0d2eb44f631d9d0a826efa3156f157477fdaecf4</id>
<content type='text'>
They were generated by 'codespell' and then manually reviewed.

Signed-off-by: Lucas De Marchi &lt;lucas.demarchi@profusion.mobi&gt;
Cc: trivial@kernel.org
LKML-Reference: &lt;1300389856-1099-3-git-send-email-lucas.demarchi@profusion.mobi&gt;
Signed-off-by: Ingo Molnar &lt;mingo@elte.hu&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
They were generated by 'codespell' and then manually reviewed.

Signed-off-by: Lucas De Marchi &lt;lucas.demarchi@profusion.mobi&gt;
Cc: trivial@kernel.org
LKML-Reference: &lt;1300389856-1099-3-git-send-email-lucas.demarchi@profusion.mobi&gt;
Signed-off-by: Ingo Molnar &lt;mingo@elte.hu&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>KVM: fix typo in copyright notice</title>
<updated>2010-10-24T08:53:14+00:00</updated>
<author>
<name>Nicolas Kaiser</name>
<email>nikai@nikai.net</email>
</author>
<published>2010-10-06T12:23:22+00:00</published>
<link rel='alternate' type='text/html' href='https://git.toradex.cn/cgit/linux-toradex.git/commit/?id=9611c187774f0e20c258c23ced2599c44bd2fef4'/>
<id>9611c187774f0e20c258c23ced2599c44bd2fef4</id>
<content type='text'>
Fix typo in copyright notice.

Signed-off-by: Nicolas Kaiser &lt;nikai@nikai.net&gt;
Signed-off-by: Marcelo Tosatti &lt;mtosatti@redhat.com&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
Fix typo in copyright notice.

Signed-off-by: Nicolas Kaiser &lt;nikai@nikai.net&gt;
Signed-off-by: Marcelo Tosatti &lt;mtosatti@redhat.com&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>KVM: Add mini-API for vcpu-&gt;requests</title>
<updated>2010-08-01T07:47:05+00:00</updated>
<author>
<name>Avi Kivity</name>
<email>avi@redhat.com</email>
</author>
<published>2010-05-10T09:34:53+00:00</published>
<link rel='alternate' type='text/html' href='https://git.toradex.cn/cgit/linux-toradex.git/commit/?id=a8eeb04a44dd6dc4c8158953d9bae48849c9a188'/>
<id>a8eeb04a44dd6dc4c8158953d9bae48849c9a188</id>
<content type='text'>
Makes it a little more readable and hackable.

Signed-off-by: Avi Kivity &lt;avi@redhat.com&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
Makes it a little more readable and hackable.

Signed-off-by: Avi Kivity &lt;avi@redhat.com&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>KVM: Update Red Hat copyrights</title>
<updated>2010-08-01T07:35:51+00:00</updated>
<author>
<name>Avi Kivity</name>
<email>avi@redhat.com</email>
</author>
<published>2010-05-23T15:37:00+00:00</published>
<link rel='alternate' type='text/html' href='https://git.toradex.cn/cgit/linux-toradex.git/commit/?id=221d059d15f1c8bd070a63fd45cd8d2598af5f99'/>
<id>221d059d15f1c8bd070a63fd45cd8d2598af5f99</id>
<content type='text'>
Signed-off-by: Avi Kivity &lt;avi@redhat.com&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
Signed-off-by: Avi Kivity &lt;avi@redhat.com&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>KVM: x86: document KVM_REQ_PENDING_TIMER usage</title>
<updated>2010-05-17T09:16:40+00:00</updated>
<author>
<name>Marcelo Tosatti</name>
<email>mtosatti@redhat.com</email>
</author>
<published>2010-03-23T17:15:53+00:00</published>
<link rel='alternate' type='text/html' href='https://git.toradex.cn/cgit/linux-toradex.git/commit/?id=041b1359a29b9301bc8baed6efcdbad29f80f6af'/>
<id>041b1359a29b9301bc8baed6efcdbad29f80f6af</id>
<content type='text'>
Document that KVM_REQ_PENDING_TIMER is implicitly used during guest
entry.

Signed-off-by: Marcelo Tosatti &lt;mtosatti@redhat.com&gt;
Signed-off-by: Avi Kivity &lt;avi@redhat.com&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
Document that KVM_REQ_PENDING_TIMER is implicitly used during guest
entry.

Signed-off-by: Marcelo Tosatti &lt;mtosatti@redhat.com&gt;
Signed-off-by: Avi Kivity &lt;avi@redhat.com&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>KVM: Drop useless atomic test from timer function</title>
<updated>2009-09-10T05:32:57+00:00</updated>
<author>
<name>Jan Kiszka</name>
<email>jan.kiszka@siemens.com</email>
</author>
<published>2009-06-09T13:37:03+00:00</published>
<link rel='alternate' type='text/html' href='https://git.toradex.cn/cgit/linux-toradex.git/commit/?id=681405bfc73a2717ae9b03b2bad465b009106f31'/>
<id>681405bfc73a2717ae9b03b2bad465b009106f31</id>
<content type='text'>
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 &lt;jan.kiszka@siemens.com&gt;
Signed-off-by: Avi Kivity &lt;avi@redhat.com&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
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 &lt;jan.kiszka@siemens.com&gt;
Signed-off-by: Avi Kivity &lt;avi@redhat.com&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>KVM: Fix racy event propagation in timer</title>
<updated>2009-09-10T05:32:57+00:00</updated>
<author>
<name>Jan Kiszka</name>
<email>jan.kiszka@siemens.com</email>
</author>
<published>2009-06-09T13:37:01+00:00</published>
<link rel='alternate' type='text/html' href='https://git.toradex.cn/cgit/linux-toradex.git/commit/?id=f7104db26ab2bc5f642892774ac8fb0f15400969'/>
<id>f7104db26ab2bc5f642892774ac8fb0f15400969</id>
<content type='text'>
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 &gt; 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 &lt;jan.kiszka@siemens.com&gt;
Signed-off-by: Avi Kivity &lt;avi@redhat.com&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
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 &gt; 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 &lt;jan.kiszka@siemens.com&gt;
Signed-off-by: Avi Kivity &lt;avi@redhat.com&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>KVM: Use pointer to vcpu instead of vcpu_id in timer code.</title>
<updated>2009-09-10T05:32:52+00:00</updated>
<author>
<name>Gleb Natapov</name>
<email>gleb@redhat.com</email>
</author>
<published>2009-06-09T12:56:27+00:00</published>
<link rel='alternate' type='text/html' href='https://git.toradex.cn/cgit/linux-toradex.git/commit/?id=1ed0ce000a6c20c36ec649e32fc24393ef418ed8'/>
<id>1ed0ce000a6c20c36ec649e32fc24393ef418ed8</id>
<content type='text'>
Signed-off-by: Gleb Natapov &lt;gleb@redhat.com&gt;
Signed-off-by: Avi Kivity &lt;avi@redhat.com&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
Signed-off-by: Gleb Natapov &lt;gleb@redhat.com&gt;
Signed-off-by: Avi Kivity &lt;avi@redhat.com&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>KVM: unify part of generic timer handling</title>
<updated>2009-06-10T08:48:25+00:00</updated>
<author>
<name>Marcelo Tosatti</name>
<email>mtosatti@redhat.com</email>
</author>
<published>2009-02-23T13:57:41+00:00</published>
<link rel='alternate' type='text/html' href='https://git.toradex.cn/cgit/linux-toradex.git/commit/?id=d3c7b77d1a6e7a0a27035a7ba723a3455317883e'/>
<id>d3c7b77d1a6e7a0a27035a7ba723a3455317883e</id>
<content type='text'>
Hide the internals of vcpu awakening / injection from the in-kernel
emulated timers. This makes future changes in this logic easier and
decreases the distance to more generic timer handling.

Signed-off-by: Marcelo Tosatti &lt;mtosatti@redhat.com&gt;
Signed-off-by: Avi Kivity &lt;avi@redhat.com&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
Hide the internals of vcpu awakening / injection from the in-kernel
emulated timers. This makes future changes in this logic easier and
decreases the distance to more generic timer handling.

Signed-off-by: Marcelo Tosatti &lt;mtosatti@redhat.com&gt;
Signed-off-by: Avi Kivity &lt;avi@redhat.com&gt;
</pre>
</div>
</content>
</entry>
</feed>
