From mboxrd@z Thu Jan 1 00:00:00 1970 From: Martin Schwidefsky Subject: Re: [PATCH 0/3] DAPL support on s390x platform Date: Fri, 12 Dec 2014 09:19:04 +0100 Message-ID: <20141212091904.6be89119@mschwide> References: <1412933657-52641-1-git-send-email-aishchuk@linux.vnet.ibm.com> <546354D9.9050601@dev.mellanox.co.il> Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: Sender: linux-rdma-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: Utz Bacher Cc: Yishai Hadas , Roland Dreier , Alexey Ishchuk , amira-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org, blaschka-23VcF4HTsmIX0ybBhKVfKdBPR1lH4CV8@public.gmane.org, Gonzalo Muelas Serrano , "linux-rdma-u79uwXL29TY76Z2rM5mHXA@public.gmane.org" , mschwid2-23VcF4HTsmIX0ybBhKVfKdBPR1lH4CV8@public.gmane.org, Yishai Hadas List-Id: linux-rdma@vger.kernel.org On Wed, 10 Dec 2014 17:27:38 +0100 Utz Bacher wrote: > Yishai Hadas wrote on 12.11.2014 13:38:49: > [...] > > On 11/12/2014 1:22 AM, Roland Dreier wrote: > > > On Wed, Nov 5, 2014 at 7:04 AM, Utz Bacher > wrote: > > >> (B) Status of patches > > >> 1. kernel code -- the new system call: reviewed, acked and accepted by > the > > >> s390x maintainer Martin Schwidefsky (2014/10/13), so we will have that > > >> system call in the s390x kernel. > > >> 2. libibverbs -- define barriers on s390x: Looking for your feedback. > We > > >> understand there have been no general objections so far. > > >> 3. libmlx4 -- provide MMIO abstraction: reviewed by the Mellanox > > >> maintainers and we understand they would apply this once you give the > go > > >> for the overall set. > > >> Previously, a patch to DAPL to build on s390x has been accepted > already > > >> (Arlin Davis, 2014/09/02). > [...] > > > If Mellanox is willing to take on the maintenance burden of changing > > > all MMIO access to an inline function, and if you're willing to take > > > on the burden of knowing that every new adapter you support means > > > tracking down and convincing the maintainer of the driver library, > > > then I'm OK with adding the simple barrier patch to libibverbs. Could > > > you please send the latest version of that patch to me? > > > > > > > The libmlx4 patch should pass some performance regression before it can > > be approved, this task is in progress in our side. > > so when the libmlx4 patch passed the performance regression runs > successfully, we would assume Roland and Yishai acknowledge the changes. > Can we correctly expect these patches (without further changes) appearing > in libmlx4 on top of 1.0.6 and libibverbs on top of 1.1.8? > Just checking before we talk to distribution partners, so that everyone > stays in sync with upstream. Martin Schwidefsky is applying the kernel > changes, too. The kernel part just went upstream, with the following git commit: commit 4eafad7febd482092b331ea72c37274d745956be Author: Alexey Ishchuk Date: Fri Nov 14 14:27:58 2014 +0100 s390/kernel: add system calls for PCI memory access Add the new __NR_s390_pci_mmio_write and __NR_s390_pci_mmio_read system calls to allow user space applications to access device PCI I/O memory pages on s390x platform. [ Martin Schwidefsky: some code beautification ] Signed-off-by: Alexey Ishchuk Signed-off-by: Martin Schwidefsky -- blue skies, Martin. "Reality continues to ruin my life." - Calvin. -- To unsubscribe from this list: send the line "unsubscribe linux-rdma" in the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org More majordomo info at http://vger.kernel.org/majordomo-info.html