On 04/09/2015 10:13 AM, Peter Zijlstra wrote:
On Thu, Apr 09, 2015 at 09:16:24AM -0400, Rik van Riel wrote:
On 04/09/2015 03:01 AM, Peter Zijlstra wrote:
On Wed, Apr 08, 2015 at 02:32:19PM -0400, Waiman Long wrote:
For a virtual guest with the qspinlock patch, a simple unfair byte lock
will
On 04/09/2015 03:01 AM, Peter Zijlstra wrote:
On Wed, Apr 08, 2015 at 02:32:19PM -0400, Waiman Long wrote:
For a virtual guest with the qspinlock patch, a simple unfair byte lock
will be used if PV spinlock is not configured in or the hypervisor
isn't either KVM or Xen. The byte lock works
On Thu, Apr 09, 2015 at 08:13:27PM +0200, Peter Zijlstra wrote:
On Mon, Apr 06, 2015 at 10:55:44PM -0400, Waiman Long wrote:
+#define PV_HB_PER_LINE (SMP_CACHE_BYTES / sizeof(struct
pv_hash_bucket))
+static struct qspinlock **pv_hash(struct qspinlock *lock, struct pv_node
*node)
On Wed, Apr 08, 2015 at 02:32:19PM -0400, Waiman Long wrote:
For a virtual guest with the qspinlock patch, a simple unfair byte lock
will be used if PV spinlock is not configured in or the hypervisor
isn't either KVM or Xen. The byte lock works fine with small guest
of just a few vCPUs. On a
On Thu, Apr 09, 2015 at 09:57:21PM +0200, Peter Zijlstra wrote:
On Mon, Apr 06, 2015 at 10:55:48PM -0400, Waiman Long wrote:
@@ -219,24 +236,30 @@ static void pv_wait_node(struct mcs_spinlock *node)
}
/*
+ * Called after setting next-locked = 1 lock acquired.
+ * Check if the
On 04/09/2015 02:23 PM, Peter Zijlstra wrote:
On Thu, Apr 09, 2015 at 08:13:27PM +0200, Peter Zijlstra wrote:
On Mon, Apr 06, 2015 at 10:55:44PM -0400, Waiman Long wrote:
+#define PV_HB_PER_LINE (SMP_CACHE_BYTES / sizeof(struct pv_hash_bucket))
+static struct qspinlock **pv_hash(struct
On Mon, Apr 06, 2015 at 10:55:44PM -0400, Waiman Long wrote:
+++ b/kernel/locking/qspinlock_paravirt.h
@@ -0,0 +1,321 @@
+#ifndef _GEN_PV_LOCK_SLOWPATH
+#error do not include this file
+#endif
+
+/*
+ * Implement paravirt qspinlocks; the general idea is to halt the vcpus
instead
+ * of
-Original Message-
From: dev [mailto:dev-boun...@dpdk.org] On Behalf Of Luke Gorrie
Sent: Thursday, April 09, 2015 11:13 AM
To: snabb-de...@googlegroups.com
Cc: d...@dpdk.org; VirtualOpenSystems Technical Team; Michael S. Tsirkin;
virtualization@lists.linux-foundation.org
Subject:
On Wed, 8 Apr 2015 16:49:46 +0200
Michael S. Tsirkin m...@redhat.com wrote:
On Tue, Mar 31, 2015 at 05:17:25PM +0200, Michael S. Tsirkin wrote:
This simply reorders functions in virtio_config
so width access wrapper helpers are all together.
Drops an extra empty line while we are at it.
On Thu, Apr 09, 2015 at 09:16:24AM -0400, Rik van Riel wrote:
On 04/09/2015 03:01 AM, Peter Zijlstra wrote:
On Wed, Apr 08, 2015 at 02:32:19PM -0400, Waiman Long wrote:
For a virtual guest with the qspinlock patch, a simple unfair byte lock
will be used if PV spinlock is not configured in
On Mon, Apr 06, 2015 at 10:55:48PM -0400, Waiman Long wrote:
@@ -219,24 +236,30 @@ static void pv_wait_node(struct mcs_spinlock *node)
}
/*
+ * Called after setting next-locked = 1 lock acquired.
+ * Check if the the CPU has been halted. If so, set the _Q_SLOW_VAL flag
+ * and put an
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