Displaying 5 results from an estimated 5 matches for "atomici".
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atomic
2016 Nov 25
3
[PATCH 0/3] virtio/vringh: kill off ACCESS_ONCE()
...- wait for it - "reading a value once".
>
> Note how it doesn't say ANYTHING about "atomic" or anything like that.
> It's about reading *ONCE*.
>
> ---snip---
I see. That's unfortunate, given that practically every use I'm aware of
assumes some atomicity (e.g. freedom from tearing when loading/storing
pointers or values up to the native width of the machine). I believe
that's the case here, for virtio, for example.
Perhaps we can add new accessors that are supposed to guarantee that,
into which we can drop appropriate warnings.
Naming will...
2016 Nov 25
3
[PATCH 0/3] virtio/vringh: kill off ACCESS_ONCE()
...- wait for it - "reading a value once".
>
> Note how it doesn't say ANYTHING about "atomic" or anything like that.
> It's about reading *ONCE*.
>
> ---snip---
I see. That's unfortunate, given that practically every use I'm aware of
assumes some atomicity (e.g. freedom from tearing when loading/storing
pointers or values up to the native width of the machine). I believe
that's the case here, for virtio, for example.
Perhaps we can add new accessors that are supposed to guarantee that,
into which we can drop appropriate warnings.
Naming will...
2012 Apr 12
2
[net-next V7 PATCH] virtio-net: send gratuitous packets when needed
As hypervior does not have the knowledge of guest network configuration, it's
better to ask guest to send gratuitous packets when needed.
This patch implements VIRTIO_NET_F_GUEST_ANNOUNCE feature: hypervisor would
notice the guest when it thinks it's time for guest to announce the link
presnece. Guest tests VIRTIO_NET_S_ANNOUNCE bit during config change interrupt
and woule send gratuitous
2012 Apr 12
2
[net-next V7 PATCH] virtio-net: send gratuitous packets when needed
As hypervior does not have the knowledge of guest network configuration, it's
better to ask guest to send gratuitous packets when needed.
This patch implements VIRTIO_NET_F_GUEST_ANNOUNCE feature: hypervisor would
notice the guest when it thinks it's time for guest to announce the link
presnece. Guest tests VIRTIO_NET_S_ANNOUNCE bit during config change interrupt
and woule send gratuitous
2016 Nov 25
0
[PATCH 0/3] virtio/vringh: kill off ACCESS_ONCE()
On Fri, Nov 25, 2016 at 12:23:56PM +0000, Mark Rutland wrote:
> Naming will be problematic; calling them ATOMIC_* makes tham sound like
> they work on atomic_t. That and I have no idea how to ensure correct
> usage tree-wide; I'm not sure if/how Coccinelle can help.
>
> Peter, thoughts?
Something like so perhaps?
---
#ifdef CONFIG_DEBUG_ATOMIC_SLEEP
#define