From: Jason Wang <jasowang@redhat.com>
To: mst@redhat.com, kvm@vger.kernel.org,
virtualization@lists.linux-foundation.org,
netdev@vger.kernel.org
Cc: linux-kernel@vger.kernel.org, linux-mm@kvack.org, jgg@ziepe.ca
Subject: [PATCH V3 01/10] vhost: disable metadata prefetch optimization
Date: Wed, 7 Aug 2019 02:54:40 -0400 [thread overview]
Message-ID: <20190807065449.23373-2-jasowang@redhat.com> (raw)
In-Reply-To: <20190807065449.23373-1-jasowang@redhat.com>
From: "Michael S. Tsirkin" <mst@redhat.com>
This seems to cause guest and host memory corruption.
Disable for now until we get a better handle on that.
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
---
drivers/vhost/vhost.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/vhost/vhost.h b/drivers/vhost/vhost.h
index 819296332913..42a8c2a13ab1 100644
--- a/drivers/vhost/vhost.h
+++ b/drivers/vhost/vhost.h
@@ -96,7 +96,7 @@ struct vhost_uaddr {
};
#if defined(CONFIG_MMU_NOTIFIER) && ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE == 0
-#define VHOST_ARCH_CAN_ACCEL_UACCESS 1
+#define VHOST_ARCH_CAN_ACCEL_UACCESS 0
#else
#define VHOST_ARCH_CAN_ACCEL_UACCESS 0
#endif
--
2.18.1
next prev parent reply other threads:[~2019-08-07 6:55 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-08-07 6:54 [PATCH V3 00/10] Fixes for metadata accelreation Jason Wang
2019-08-07 6:54 ` Jason Wang [this message]
2019-08-07 7:05 ` [PATCH V3 01/10] vhost: disable metadata prefetch optimization Jason Wang
2019-08-07 6:54 ` [PATCH V3 02/10] vhost: don't set uaddr for invalid address Jason Wang
2019-08-07 6:54 ` [PATCH V3 03/10] vhost: validate MMU notifier registration Jason Wang
2019-08-07 6:54 ` [PATCH V3 04/10] vhost: fix vhost map leak Jason Wang
2019-08-07 6:54 ` [PATCH V3 05/10] vhost: reset invalidate_count in vhost_set_vring_num_addr() Jason Wang
2019-08-07 6:54 ` [PATCH V3 06/10] vhost: mark dirty pages during map uninit Jason Wang
2019-08-07 6:54 ` [PATCH V3 07/10] vhost: don't do synchronize_rcu() in vhost_uninit_vq_maps() Jason Wang
2019-08-07 6:54 ` [PATCH V3 08/10] vhost: do not use RCU to synchronize MMU notifier with worker Jason Wang
2019-08-07 6:54 ` [PATCH V3 09/10] vhost: correctly set dirty pages in MMU notifiers callback Jason Wang
2019-08-07 6:54 ` [PATCH V3 10/10] vhost: do not return -EAGAIN for non blocking invalidation too early Jason Wang
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