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From: Michael Mueller <mimu@linux.ibm.com>
To: KVM Mailing List <kvm@vger.kernel.org>,
	Linux-S390 Mailing List <linux-s390@vger.kernel.org>,
	Cornelia Huck <cohuck@redhat.com>,
	Sebastian Ott <sebott@linux.ibm.com>,
	Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: Halil Pasic <pasic@linux.ibm.com>,
	virtualization@lists.linux-foundation.org,
	"Michael S . Tsirkin" <mst@redhat.com>,
	Christoph Hellwig <hch@infradead.org>,
	Thomas Huth <thuth@redhat.com>,
	Christian Borntraeger <borntraeger@de.ibm.com>,
	Viktor Mihajlovski <mihajlov@linux.ibm.com>,
	Vasily Gorbik <gor@linux.ibm.com>,
	Janosch Frank <frankja@linux.ibm.com>,
	Claudio Imbrenda <imbrenda@linux.ibm.com>,
	Farhan Ali <alifm@linux.ibm.com>,
	Eric Farman <farman@linux.ibm.com>,
	Pierre Morel <pmorel@linux.ibm.com>,
	Michael Mueller <mimu@linux.ibm.com>
Subject: [PATCH v2 5/8] virtio/s390: use cacheline aligned airq bit vectors
Date: Thu, 23 May 2019 18:22:06 +0200	[thread overview]
Message-ID: <20190523162209.9543-6-mimu@linux.ibm.com> (raw)
In-Reply-To: <20190523162209.9543-1-mimu@linux.ibm.com>

From: Halil Pasic <pasic@linux.ibm.com>

The flag AIRQ_IV_CACHELINE was recently added to airq_iv_create(). Let
us use it! We actually wanted the vector to span a cacheline all along.

Signed-off-by: Halil Pasic <pasic@linux.ibm.com>
---
 drivers/s390/virtio/virtio_ccw.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/s390/virtio/virtio_ccw.c b/drivers/s390/virtio/virtio_ccw.c
index f995798bb025..1da7430f94c8 100644
--- a/drivers/s390/virtio/virtio_ccw.c
+++ b/drivers/s390/virtio/virtio_ccw.c
@@ -216,7 +216,8 @@ static struct airq_info *new_airq_info(void)
 	if (!info)
 		return NULL;
 	rwlock_init(&info->lock);
-	info->aiv = airq_iv_create(VIRTIO_IV_BITS, AIRQ_IV_ALLOC | AIRQ_IV_PTR);
+	info->aiv = airq_iv_create(VIRTIO_IV_BITS, AIRQ_IV_ALLOC | AIRQ_IV_PTR
+				   | AIRQ_IV_CACHELINE);
 	if (!info->aiv) {
 		kfree(info);
 		return NULL;
-- 
2.13.4

WARNING: multiple messages have this Message-ID (diff)
From: Michael Mueller <mimu@linux.ibm.com>
To: KVM Mailing List <kvm@vger.kernel.org>,
	Linux-S390 Mailing List <linux-s390@vger.kernel.org>,
	Cornelia Huck <cohuck@redhat.com>,
	Sebastian Ott <sebott@linux.ibm.com>,
	Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: Christoph Hellwig <hch@infradead.org>,
	Thomas Huth <thuth@redhat.com>,
	Claudio Imbrenda <imbrenda@linux.ibm.com>,
	Janosch Frank <frankja@linux.ibm.com>,
	Vasily Gorbik <gor@linux.ibm.com>,
	"Michael S . Tsirkin" <mst@redhat.com>,
	Pierre Morel <pmorel@linux.ibm.com>,
	Farhan Ali <alifm@linux.ibm.com>,
	Eric Farman <farman@linux.ibm.com>,
	virtualization@lists.linux-foundation.org,
	Halil Pasic <pasic@linux.ibm.com>,
	Christian Borntraeger <borntraeger@de.ibm.com>,
	Michael Mueller <mimu@linux.ibm.com>,
	Viktor Mihajlovski <mihajlov@linux.ibm.com>
Subject: [PATCH v2 5/8] virtio/s390: use cacheline aligned airq bit vectors
Date: Thu, 23 May 2019 18:22:06 +0200	[thread overview]
Message-ID: <20190523162209.9543-6-mimu@linux.ibm.com> (raw)
In-Reply-To: <20190523162209.9543-1-mimu@linux.ibm.com>

From: Halil Pasic <pasic@linux.ibm.com>

The flag AIRQ_IV_CACHELINE was recently added to airq_iv_create(). Let
us use it! We actually wanted the vector to span a cacheline all along.

Signed-off-by: Halil Pasic <pasic@linux.ibm.com>
---
 drivers/s390/virtio/virtio_ccw.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/s390/virtio/virtio_ccw.c b/drivers/s390/virtio/virtio_ccw.c
index f995798bb025..1da7430f94c8 100644
--- a/drivers/s390/virtio/virtio_ccw.c
+++ b/drivers/s390/virtio/virtio_ccw.c
@@ -216,7 +216,8 @@ static struct airq_info *new_airq_info(void)
 	if (!info)
 		return NULL;
 	rwlock_init(&info->lock);
-	info->aiv = airq_iv_create(VIRTIO_IV_BITS, AIRQ_IV_ALLOC | AIRQ_IV_PTR);
+	info->aiv = airq_iv_create(VIRTIO_IV_BITS, AIRQ_IV_ALLOC | AIRQ_IV_PTR
+				   | AIRQ_IV_CACHELINE);
 	if (!info->aiv) {
 		kfree(info);
 		return NULL;
-- 
2.13.4

  parent reply	other threads:[~2019-05-23 16:22 UTC|newest]

Thread overview: 72+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-05-23 16:22 [PATCH v2 0/8] s390: virtio: support protected virtualization Michael Mueller
2019-05-23 16:22 ` Michael Mueller
2019-05-23 16:22 ` [PATCH v2 1/8] s390/mm: force swiotlb for " Michael Mueller
2019-05-23 16:22   ` Michael Mueller
2019-05-23 16:22 ` [PATCH v2 2/8] s390/cio: introduce DMA pools to cio Michael Mueller
2019-05-23 16:22   ` Michael Mueller
2019-05-25  9:22   ` Sebastian Ott
2019-05-25  9:22     ` Sebastian Ott
2019-05-27 11:26     ` Michael Mueller
2019-05-27 11:26       ` Michael Mueller
2019-05-27  6:57   ` Cornelia Huck
2019-05-27  6:57     ` Cornelia Huck
2019-05-27 11:47     ` Halil Pasic
2019-05-27 11:47       ` Halil Pasic
2019-05-27 12:06       ` Cornelia Huck
2019-05-27 12:06         ` Cornelia Huck
2019-05-27 12:00     ` Michael Mueller
2019-05-27 12:00       ` Michael Mueller
2019-05-23 16:22 ` [PATCH v2 3/8] s390/cio: add basic protected virtualization support Michael Mueller
2019-05-23 16:22   ` Michael Mueller
2019-05-25  9:44   ` Sebastian Ott
2019-05-25  9:44     ` Sebastian Ott
2019-05-27 15:01     ` Michael Mueller
2019-05-27 15:01       ` Michael Mueller
2019-05-27 10:38   ` Cornelia Huck
2019-05-27 10:38     ` Cornelia Huck
2019-05-27 12:15     ` Michael Mueller
2019-05-27 12:15       ` Michael Mueller
2019-05-27 12:30     ` Halil Pasic
2019-05-27 12:30       ` Halil Pasic
2019-05-27 13:31       ` Cornelia Huck
2019-05-27 13:31         ` Cornelia Huck
2019-05-29 12:24         ` Michael Mueller
2019-05-29 12:24           ` Michael Mueller
2019-05-29 12:30           ` Cornelia Huck
2019-05-29 12:30             ` Cornelia Huck
2019-05-23 16:22 ` [PATCH v2 4/8] s390/airq: use DMA memory for adapter interrupts Michael Mueller
2019-05-23 16:22   ` Michael Mueller
2019-05-25  9:51   ` Sebastian Ott
2019-05-25  9:51     ` Sebastian Ott
2019-05-27 10:53   ` Cornelia Huck
2019-05-27 10:53     ` Cornelia Huck
2019-05-23 16:22 ` Michael Mueller [this message]
2019-05-23 16:22   ` [PATCH v2 5/8] virtio/s390: use cacheline aligned airq bit vectors Michael Mueller
2019-05-27 10:55   ` Cornelia Huck
2019-05-27 10:55     ` Cornelia Huck
2019-05-27 12:03     ` Halil Pasic
2019-05-27 12:03       ` Halil Pasic
2019-05-23 16:22 ` [PATCH v2 6/8] virtio/s390: add indirection to indicators access Michael Mueller
2019-05-23 16:22   ` Michael Mueller
2019-05-27 11:00   ` Cornelia Huck
2019-05-27 11:00     ` Cornelia Huck
2019-05-27 11:57     ` Halil Pasic
2019-05-27 11:57       ` Halil Pasic
2019-05-27 12:10       ` Cornelia Huck
2019-05-27 12:10         ` Cornelia Huck
2019-05-29 11:05         ` Michael Mueller
2019-05-29 11:05           ` Michael Mueller
2019-05-23 16:22 ` [PATCH v2 7/8] virtio/s390: use DMA memory for ccw I/O and classic notifiers Michael Mueller
2019-05-23 16:22   ` Michael Mueller
2019-05-27 11:49   ` Cornelia Huck
2019-05-27 11:49     ` Cornelia Huck
2019-05-23 16:22 ` [PATCH v2 8/8] virtio/s390: make airq summary indicators DMA Michael Mueller
2019-05-23 16:22   ` Michael Mueller
2019-05-27 12:00   ` Cornelia Huck
2019-05-27 12:00     ` Cornelia Huck
2019-05-28 14:33     ` Halil Pasic
2019-05-28 14:33       ` Halil Pasic
2019-05-28 14:56       ` Cornelia Huck
2019-05-28 14:56         ` Cornelia Huck
2019-05-28 14:58       ` Michael Mueller
2019-05-28 14:58         ` Michael Mueller

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