similar to: memory barriers in virtq.lua?

Hi Michael, I'm writing to follow up the previous discussion about memory barriers in virtio-net device implementations, and Cc'ing the DPDK list because I believe this is relevant to them too. First, thanks again for getting in touch and reviewing our code. I have now found a missed case where we *do* require a hardware memory barrier on x86 in our vhost/virtio-net device. That is when

Hi Michael, I'm writing to follow up the previous discussion about memory barriers in virtio-net device implementations, and Cc'ing the DPDK list because I believe this is relevant to them too. First, thanks again for getting in touch and reviewing our code. I have now found a missed case where we *do* require a hardware memory barrier on x86 in our vhost/virtio-net device. That is when

Hello Michael, On Tue, Jan 27, 2015 at 6:01 PM, Michael S. Tsirkin <mst at redhat.com> wrote: > Hi Nikolay, > I poked at src/lib/virtio/virtq.lua a bit - > I was surprised to find no explicit CPU memory > barriers in the virtq implementation. > These are typically required when using virtio > on smp machines - the spec actually mention where > barriers are necessary.

On 4/7/2015 10:23 PM, Luke Gorrie wrote: > Hi Michael, > > I'm writing to follow up the previous discussion about memory barriers in > virtio-net device implementations, and Cc'ing the DPDK list because I > believe this is relevant to them too. > > First, thanks again for getting in touch and reviewing our code. > > I have now found a missed case where we *do*

On Tue, Apr 07, 2015 at 04:22:42PM +0200, Luke Gorrie wrote: > Hi Michael, > > I'm writing to follow up the previous discussion about memory barriers in > virtio-net device implementations, and Cc'ing the DPDK list because I believe > this is relevant to them too. > > First, thanks again for getting in touch and reviewing our code. > > I have now found a

Howdy, On 8 April 2015 at 17:15, Xie, Huawei <huawei.xie at intel.com> wrote: > luke: > 1. host read the flag. 2 guest toggles the flag 3.guest checks the used. > 4. host update used. > Is this your case? > Yep, that is exactly the case I mean. Cheers, -Luke -------------- next part -------------- An HTML attachment was scrubbed... URL:

Howdy, On 8 April 2015 at 17:15, Xie, Huawei <huawei.xie at intel.com> wrote: > luke: > 1. host read the flag. 2 guest toggles the flag 3.guest checks the used. > 4. host update used. > Is this your case? > Yep, that is exactly the case I mean. Cheers, -Luke -------------- next part -------------- An HTML attachment was scrubbed... URL:

I have been working with Antti Kantee on running scripting languages directly on Xen, and have got LuaJIT running. Essentially this is a build of a modified version of the Xen "Mini-os" which provides a small stub to handle basic Xen functions like memory allocation, combined with NetBSD kernel components to provide networking and file system access if required, plus NetBSD libc to

On 08/02/2023 11:43, Stefan Hajnoczi wrote: > On Wed, Feb 08, 2023 at 09:33:33AM +0100, Peter-Jan Gootzen wrote: >> >> >> On 07/02/2023 22:57, Vivek Goyal wrote: >>> On Tue, Feb 07, 2023 at 04:32:02PM -0500, Stefan Hajnoczi wrote: >>>> On Tue, Feb 07, 2023 at 02:53:58PM -0500, Vivek Goyal wrote: >>>>> On Tue, Feb 07, 2023 at 02:45:39PM

On Thu, Apr 11, 2019 at 07:02:15PM +0200, Cornelia Huck wrote: > On Thu, 11 Apr 2019 14:01:54 +0300 > Yuval Shaia <yuval.shaia at oracle.com> wrote: > > > Data center backends use more and more RDMA or RoCE devices and more and > > more software runs in virtualized environment. > > There is a need for a standard to enable RDMA/RoCE on Virtual Machines. > >

On Thu, Apr 11, 2019 at 07:02:15PM +0200, Cornelia Huck wrote: > On Thu, 11 Apr 2019 14:01:54 +0300 > Yuval Shaia <yuval.shaia at oracle.com> wrote: > > > Data center backends use more and more RDMA or RoCE devices and more and > > more software runs in virtualized environment. > > There is a need for a standard to enable RDMA/RoCE on Virtual Machines. > >

On Fri, Apr 19, 2019 at 01:16:06PM +0200, Hannes Reinecke wrote: > On 4/15/19 12:35 PM, Yuval Shaia wrote: > > On Thu, Apr 11, 2019 at 07:02:15PM +0200, Cornelia Huck wrote: > > > On Thu, 11 Apr 2019 14:01:54 +0300 > > > Yuval Shaia <yuval.shaia at oracle.com> wrote: > > > > > > > Data center backends use more and more RDMA or RoCE devices and

On Fri, Apr 19, 2019 at 01:16:06PM +0200, Hannes Reinecke wrote: > On 4/15/19 12:35 PM, Yuval Shaia wrote: > > On Thu, Apr 11, 2019 at 07:02:15PM +0200, Cornelia Huck wrote: > > > On Thu, 11 Apr 2019 14:01:54 +0300 > > > Yuval Shaia <yuval.shaia at oracle.com> wrote: > > > > > > > Data center backends use more and more RDMA or RoCE devices and

On Thu, Apr 11, 2019 at 08:34:20PM +0300, Yuval Shaia wrote: > On Thu, Apr 11, 2019 at 05:24:08PM +0000, Jason Gunthorpe wrote: > > On Thu, Apr 11, 2019 at 07:02:15PM +0200, Cornelia Huck wrote: > > > On Thu, 11 Apr 2019 14:01:54 +0300 > > > Yuval Shaia <yuval.shaia at oracle.com> wrote: > > > > > > > Data center backends use more and more

On Thu, Apr 11, 2019 at 07:02:15PM +0200, Cornelia Huck wrote: > On Thu, 11 Apr 2019 14:01:54 +0300 > Yuval Shaia <yuval.shaia at oracle.com> wrote: > > > Data center backends use more and more RDMA or RoCE devices and more and > > more software runs in virtualized environment. > > There is a need for a standard to enable RDMA/RoCE on Virtual Machines. > >

On Thu, Apr 11, 2019 at 07:02:15PM +0200, Cornelia Huck wrote: > On Thu, 11 Apr 2019 14:01:54 +0300 > Yuval Shaia <yuval.shaia at oracle.com> wrote: > > > Data center backends use more and more RDMA or RoCE devices and more and > > more software runs in virtualized environment. > > There is a need for a standard to enable RDMA/RoCE on Virtual Machines. > >

Thanks to help in a previous thread, I now have a working LLVM codegen for the MLton compiler. Currently the stack is managed explicitly on the heap. This way the LLVM codegen re-uses the runtime layout of the other codegens, simplifying the initial porting effort. In the next phase I plan to switch to using LLVM to manage the stack, but there is a sticking point: MLton switches stacks. It does

?On 12/17/18, 2:55 PM, "Michael S. Tsirkin" <mst at redhat.com> wrote: On Thu, Dec 13, 2018 at 11:24:28PM +0000, Steven Luong (sluong) via Virtualization wrote: > Folks, > > > > We came across a memory race condition between VPP vhost driver and the kernel > vhost. VPP is running a tap interface over vhost backend. In this case,

I would like to announce the availability of llvm-lua. llvm-lua, converts Lua bytecode to LLVM IR code and supports JIT and static compiling. Using LLVM gives Lua JIT support on cpu architectures other then x86. I converted the Lua bytecode dispatch loop code into a set of C functions one for each opcode. The opcode functions take two parmeters one is the current Lua function's state,

19.08.2012, 00:39, "Julian Klappenbach" <jklappenbach at gmail.com>: >With this approach, the community would gain language independence for browsers Browser community is strongly opposed to the idea of having multiple web-faced languages > The first language I'd like to tackle is ECMAScript / Javascript. You can tale a look at llvm-lua project. However, speed of JIT