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...da <penguin-kernel at I-love.SAKURA.ne.jp> Date: Fri, 6 Feb 2015 13:28:38 +0900 Subject: [PATCH] virtio: Avoid possible kernel panic if DEBUG is enabled. The virtqueue_add() calls START_USE() upon entry. The virtqueue_kick() is called if vq->num_added == (1 << 16) - 1 before calling END_USE(). The virtqueue_kick_prepare() called via virtqueue_kick() calls START_USE() upon entry, and will call panic() if DEBUG is enabled. Move this virtqueue_kick() call to after END_USE() call. Signed-off-by: Tetsuo Handa <penguin-kernel at I-love.SAKURA.ne.jp> --- drivers/virtio/virtio_ring.c...

...da <penguin-kernel at I-love.SAKURA.ne.jp> Date: Fri, 6 Feb 2015 13:28:38 +0900 Subject: [PATCH] virtio: Avoid possible kernel panic if DEBUG is enabled. The virtqueue_add() calls START_USE() upon entry. The virtqueue_kick() is called if vq->num_added == (1 << 16) - 1 before calling END_USE(). The virtqueue_kick_prepare() called via virtqueue_kick() calls START_USE() upon entry, and will call panic() if DEBUG is enabled. Move this virtqueue_kick() call to after END_USE() call. Signed-off-by: Tetsuo Handa <penguin-kernel at I-love.SAKURA.ne.jp> --- drivers/virtio/virtio_ring.c...

...ot; of type $user_type and status $user_state in organisation "$organisation_name"'' do |name, secondary_email, user_type, user_state, organisation_name| # ... end When I run a story containing these step calls: And a user called "Mr Kameron Friesen" of type END_USER and status APPROVED in organisation "My Infant School" And a user called "Mr Adam Kameron" of type END_USER and status APPROVED in organisation "My Infant School" And a user called "Mr Matching Username" with username " kameron_is_cool at techn...

I am pretty much new at this ROR game and had what I think to be a simple question. I have a set of Sponsors that I would like to be able to select one at random and display in the my html. I have already set up the DB, scaffolded, set index controller and all is working smoothly. I know that I can display them all by doing <% for sponsor in @sponsors %> <%= sponsor.name %>

...++++++++++++++++++++++++++++++++++- 1 file changed, 487 insertions(+), 8 deletions(-) diff --git a/drivers/virtio/virtio_ring.c b/drivers/virtio/virtio_ring.c index c4f8abc7445a..f317b485ba54 100644 --- a/drivers/virtio/virtio_ring.c +++ b/drivers/virtio/virtio_ring.c @@ -55,12 +55,21 @@ #define END_USE(vq) #endif +#define _VRING_DESC_F_AVAIL(b) ((__u16)(b) << 7) +#define _VRING_DESC_F_USED(b) ((__u16)(b) << 15) + struct vring_desc_state { void *data; /* Data for callback. */ struct vring_desc *indir_desc; /* Indirect descriptor, if any. */ }; struct vring_desc_state_pac...

...tterlist *sg; + unsigned int i, n, descs_used, uninitialized_var(prev), err_idx; + __virtio16 uninitialized_var(head_flags), flags; + int head, wrap_counter; + bool indirect; + + START_USE(vq); + + BUG_ON(data == NULL); + BUG_ON(ctx && vq->indirect); + + if (unlikely(vq->broken)) { + END_USE(vq); + return -EIO; + } + +#ifdef DEBUG + { + ktime_t now = ktime_get(); + + /* No kick or get, with .1 second between? Warn. */ + if (vq->last_add_time_valid) + WARN_ON(ktime_to_ms(ktime_sub(now, vq->last_add_time)) + > 100); + vq->last_add_time = now; + vq->last_a...

...unsigned int i, n, descs_used, uninitialized_var(prev), err_idx; + __virtio16 uninitialized_var(head_flags), flags; + u16 head, avail_wrap_counter, id, cur; + bool indirect; + + START_USE(vq); + + BUG_ON(data == NULL); + BUG_ON(ctx && vq->indirect); + + if (unlikely(vq->broken)) { + END_USE(vq); + return -EIO; + } + +#ifdef DEBUG + { + ktime_t now = ktime_get(); + + /* No kick or get, with .1 second between? Warn. */ + if (vq->last_add_time_valid) + WARN_ON(ktime_to_ms(ktime_sub(now, vq->last_add_time)) + > 100); + vq->last_add_time = now; + vq->last_a...

...list *sg; + unsigned int i, n, descs_used, uninitialized_var(prev), err_idx; + __virtio16 uninitialized_var(head_flags), flags; + u16 head, wrap_counter, id; + bool indirect; + + START_USE(vq); + + BUG_ON(data == NULL); + BUG_ON(ctx && vq->indirect); + + if (unlikely(vq->broken)) { + END_USE(vq); + return -EIO; + } + +#ifdef DEBUG + { + ktime_t now = ktime_get(); + + /* No kick or get, with .1 second between? Warn. */ + if (vq->last_add_time_valid) + WARN_ON(ktime_to_ms(ktime_sub(now, vq->last_add_time)) + > 100); + vq->last_add_time = now; + vq->last_a...

Hi, I have a small app that needs to keep track of quotes, and organisations. An organisation can either be the unit who finally receives the goods (the end_user) or and intermediary (customer) (and in some cases both) An Organisation will (hopefully :) ) have many quotes; and a quote can belong to an organisation, either as a customer or as an end_user or both. So the quotes table has fields customer_id:integer, and end_user_id:integer. T...

...1 file changed, 487 insertions(+), 8 deletions(-) > > diff --git a/drivers/virtio/virtio_ring.c b/drivers/virtio/virtio_ring.c > index c4f8abc7445a..f317b485ba54 100644 > --- a/drivers/virtio/virtio_ring.c > +++ b/drivers/virtio/virtio_ring.c > @@ -55,12 +55,21 @@ > #define END_USE(vq) > #endif > > +#define _VRING_DESC_F_AVAIL(b) ((__u16)(b) << 7) > +#define _VRING_DESC_F_USED(b) ((__u16)(b) << 15) > + > struct vring_desc_state { > void *data; /* Data for callback. */ > struct vring_desc *indir_desc; /* Indirect descriptor, if an...

...1 file changed, 487 insertions(+), 8 deletions(-) > > diff --git a/drivers/virtio/virtio_ring.c b/drivers/virtio/virtio_ring.c > index c4f8abc7445a..f317b485ba54 100644 > --- a/drivers/virtio/virtio_ring.c > +++ b/drivers/virtio/virtio_ring.c > @@ -55,12 +55,21 @@ > #define END_USE(vq) > #endif > > +#define _VRING_DESC_F_AVAIL(b) ((__u16)(b) << 7) > +#define _VRING_DESC_F_USED(b) ((__u16)(b) << 15) > + > struct vring_desc_state { > void *data; /* Data for callback. */ > struct vring_desc *indir_desc; /* Indirect descriptor, if an...

Hello everyone, This RFC implements packed ring support in virtio driver. Some simple functional tests have been done with Jason's packed ring implementation in vhost (RFC v4): https://lkml.org/lkml/2018/5/16/501 Both of ping and netperf worked as expected w/ EVENT_IDX disabled. Ping worked as expected w/ EVENT_IDX enabled, but netperf didn't (A hack has been added in the driver to

Hello everyone, This RFC implements packed ring support in virtio driver. Some simple functional tests have been done with Jason's packed ring implementation in vhost (RFC v4): https://lkml.org/lkml/2018/5/16/501 Both of ping and netperf worked as expected w/ EVENT_IDX disabled. Ping worked as expected w/ EVENT_IDX enabled, but netperf didn't (A hack has been added in the driver to

...lized_var(prev), err_idx; > + __virtio16 uninitialized_var(head_flags), flags; > + int head, wrap_counter; > + bool indirect; > + > + START_USE(vq); > + > + BUG_ON(data == NULL); > + BUG_ON(ctx && vq->indirect); > + > + if (unlikely(vq->broken)) { > + END_USE(vq); > + return -EIO; > + } > + > +#ifdef DEBUG > + { > + ktime_t now = ktime_get(); > + > + /* No kick or get, with .1 second between? Warn. */ > + if (vq->last_add_time_valid) > + WARN_ON(ktime_to_ms(ktime_sub(now, vq->last_add_time)) > + &gt...

Hello everyone, This patch set implements packed ring support in virtio driver. Some functional tests have been done with Jason's packed ring implementation in vhost: https://lkml.org/lkml/2018/7/3/33 Both of ping and netperf worked as expected. v1 -> v2: - Use READ_ONCE() to read event off_wrap and flags together (Jason); - Add comments related to ccw (Jason); RFC (v6) -> v1: -

Hello everyone, This patch set implements packed ring support in virtio driver. Some functional tests have been done with Jason's packed ring implementation in vhost: https://lkml.org/lkml/2018/7/3/33 Both of ping and netperf worked as expected. v1 -> v2: - Use READ_ONCE() to read event off_wrap and flags together (Jason); - Add comments related to ccw (Jason); RFC (v6) -> v1: -

Hello everyone, This RFC implements packed ring support in virtio driver. Some simple functional tests have been done with Jason's packed ring implementation in vhost: https://lkml.org/lkml/2018/4/23/12 Both of ping and netperf worked as expected (with EVENT_IDX disabled). TODO: - Refinements (for code and commit log); - More tests; - Bug fixes; RFC v3 -> RFC v4: - Make ID allocation

...tterlist *sg; + unsigned int i, n, descs_used, uninitialized_var(prev), err_idx; + __virtio16 uninitialized_var(head_flags), flags; + int head, wrap_counter; + bool indirect; + + START_USE(vq); + + BUG_ON(data == NULL); + BUG_ON(ctx && vq->indirect); + + if (unlikely(vq->broken)) { + END_USE(vq); + return -EIO; + } + +#ifdef DEBUG + { + ktime_t now = ktime_get(); + + /* No kick or get, with .1 second between? Warn. */ + if (vq->last_add_time_valid) + WARN_ON(ktime_to_ms(ktime_sub(now, vq->last_add_time)) + > 100); + vq->last_add_time = now; + vq->last_a...

...tterlist *sg; + unsigned int i, n, descs_used, uninitialized_var(prev), err_idx; + __virtio16 uninitialized_var(head_flags), flags; + int head, wrap_counter; + bool indirect; + + START_USE(vq); + + BUG_ON(data == NULL); + BUG_ON(ctx && vq->indirect); + + if (unlikely(vq->broken)) { + END_USE(vq); + return -EIO; + } + +#ifdef DEBUG + { + ktime_t now = ktime_get(); + + /* No kick or get, with .1 second between? Warn. */ + if (vq->last_add_time_valid) + WARN_ON(ktime_to_ms(ktime_sub(now, vq->last_add_time)) + > 100); + vq->last_add_time = now; + vq->last_a...

...lized_var(prev), err_idx; > + __virtio16 uninitialized_var(head_flags), flags; > + int head, wrap_counter; > + bool indirect; > + > + START_USE(vq); > + > + BUG_ON(data == NULL); > + BUG_ON(ctx && vq->indirect); > + > + if (unlikely(vq->broken)) { > + END_USE(vq); > + return -EIO; > + } > + > +#ifdef DEBUG > + { > + ktime_t now = ktime_get(); > + > + /* No kick or get, with .1 second between? Warn. */ > + if (vq->last_add_time_valid) > + WARN_ON(ktime_to_ms(ktime_sub(now, vq->last_add_time)) > + &gt...