From: Or Gerlitz <gerlitz.or-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
To: Alexey Kardashevskiy
<aik-sLpHqDYs0B2HXe+LvDLADg@public.gmane.org>,
Huy Nguyen <huyn-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>
Cc: Doug Ledford <dledford-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>,
Eugenia Emantayev
<eugenia-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>,
Hal Rosenstock
<hal.rosenstock-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>,
Sean Hefty <sean.hefty-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>,
Yishai Hadas <yishaih-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>,
Linux Kernel
<linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>,
"linux-rdma-u79uwXL29TY76Z2rM5mHXA@public.gmane.org"
<linux-rdma-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>,
Linux Netdev List
<netdev-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>,
Paul Mackerras <paulus-eUNUBHrolfbYtjvyW6yDsg@public.gmane.org>,
Carol L Soto <clsoto-r/Jw6+rmf7HQT0dZR+AlfA@public.gmane.org>,
Yevgeny Petrilin
<yevgenyp-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>
Subject: Re: [RFC PATCH kernel] Revert "net/mlx4_core: Set UAR page size to 4KB regardless of system page size"
Date: Tue, 15 Mar 2016 12:40:06 +0200 [thread overview]
Message-ID: <CAJ3xEMhxUuQj+E00fa-tEKz+dVzDqFspC80Z=k7UPZpOP30H3g@mail.gmail.com> (raw)
In-Reply-To: <1458037148-4475-1-git-send-email-aik-sLpHqDYs0B2HXe+LvDLADg@public.gmane.org>
On Tue, Mar 15, 2016 at 12:19 PM, Alexey Kardashevskiy <aik-sLpHqDYs0B2HXe+LvDLADg@public.gmane.org> wrote:
> This reverts commit 85743f1eb34548ba4b056d2f184a3d107a3b8917.
>
> Without this revert, POWER "pseries" KVM guests with a VF passed to a guest
> using VFIO fail to bring the driver up:
>
> mlx4_core: Mellanox ConnectX core driver v2.2-1 (Feb, 2014)
> mlx4_core: Initializing 0000:00:00.0
> mlx4_core 0000:00:00.0: enabling device (0000 -> 0002)
> mlx4_core 0000:00:00.0: Detected virtual function - running in slave mode
> mlx4_core 0000:00:00.0: Sending reset
> mlx4_core 0000:00:00.0: Sending vhcr0
> mlx4_core 0000:00:00.0: HCA minimum page size:512
> mlx4_core 0000:00:00.0: UAR size:4096 != kernel PAGE_SIZE of 65536
> mlx4_core 0000:00:00.0: Failed to obtain slave caps
> Both host and guest use 64K system pages.
>
> How to fix this properly? Thanks.
The commit message says:
"[..] Regarding backward compatibility in SR-IOV, if hypervisor has
this new code, the virtual OS must be updated. [...]"
Or.
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WARNING: multiple messages have this Message-ID (diff)
From: Or Gerlitz <gerlitz.or@gmail.com>
To: Alexey Kardashevskiy <aik@ozlabs.ru>, Huy Nguyen <huyn@mellanox.com>
Cc: Doug Ledford <dledford@redhat.com>,
Eugenia Emantayev <eugenia@mellanox.com>,
Hal Rosenstock <hal.rosenstock@gmail.com>,
Sean Hefty <sean.hefty@intel.com>,
Yishai Hadas <yishaih@mellanox.com>,
Linux Kernel <linux-kernel@vger.kernel.org>,
"linux-rdma@vger.kernel.org" <linux-rdma@vger.kernel.org>,
Linux Netdev List <netdev@vger.kernel.org>,
Paul Mackerras <paulus@samba.org>,
Carol L Soto <clsoto@us.ibm.com>,
Yevgeny Petrilin <yevgenyp@mellanox.com>
Subject: Re: [RFC PATCH kernel] Revert "net/mlx4_core: Set UAR page size to 4KB regardless of system page size"
Date: Tue, 15 Mar 2016 12:40:06 +0200 [thread overview]
Message-ID: <CAJ3xEMhxUuQj+E00fa-tEKz+dVzDqFspC80Z=k7UPZpOP30H3g@mail.gmail.com> (raw)
In-Reply-To: <1458037148-4475-1-git-send-email-aik@ozlabs.ru>
On Tue, Mar 15, 2016 at 12:19 PM, Alexey Kardashevskiy <aik@ozlabs.ru> wrote:
> This reverts commit 85743f1eb34548ba4b056d2f184a3d107a3b8917.
>
> Without this revert, POWER "pseries" KVM guests with a VF passed to a guest
> using VFIO fail to bring the driver up:
>
> mlx4_core: Mellanox ConnectX core driver v2.2-1 (Feb, 2014)
> mlx4_core: Initializing 0000:00:00.0
> mlx4_core 0000:00:00.0: enabling device (0000 -> 0002)
> mlx4_core 0000:00:00.0: Detected virtual function - running in slave mode
> mlx4_core 0000:00:00.0: Sending reset
> mlx4_core 0000:00:00.0: Sending vhcr0
> mlx4_core 0000:00:00.0: HCA minimum page size:512
> mlx4_core 0000:00:00.0: UAR size:4096 != kernel PAGE_SIZE of 65536
> mlx4_core 0000:00:00.0: Failed to obtain slave caps
> Both host and guest use 64K system pages.
>
> How to fix this properly? Thanks.
The commit message says:
"[..] Regarding backward compatibility in SR-IOV, if hypervisor has
this new code, the virtual OS must be updated. [...]"
Or.
next prev parent reply other threads:[~2016-03-15 10:40 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-03-15 10:19 [RFC PATCH kernel] Revert "net/mlx4_core: Set UAR page size to 4KB regardless of system page size" Alexey Kardashevskiy
2016-03-15 10:19 ` Alexey Kardashevskiy
[not found] ` <1458037148-4475-1-git-send-email-aik-sLpHqDYs0B2HXe+LvDLADg@public.gmane.org>
2016-03-15 10:40 ` Or Gerlitz [this message]
2016-03-15 10:40 ` Or Gerlitz
[not found] ` <CAJ3xEMhxUuQj+E00fa-tEKz+dVzDqFspC80Z=k7UPZpOP30H3g-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2016-03-15 12:18 ` Christoph Hellwig
2016-03-15 12:18 ` Christoph Hellwig
2016-03-15 14:23 ` Or Gerlitz
2016-03-15 15:29 ` Christoph Hellwig
[not found] ` <20160315152911.GA21139-wEGCiKHe2LqWVfeAwA7xHQ@public.gmane.org>
2016-03-16 1:52 ` Alexey Kardashevskiy
2016-03-16 1:52 ` Alexey Kardashevskiy
2016-03-16 2:07 ` Alexey Kardashevskiy
2016-03-16 2:07 ` Alexey Kardashevskiy
[not found] ` <56E8BFFE.9000803-sLpHqDYs0B2HXe+LvDLADg@public.gmane.org>
2016-03-16 5:10 ` Eli Cohen
2016-03-16 5:10 ` Eli Cohen
[not found] ` <20160316051021.GC66645-lgQlq6cFzJSjLWYaRI30zHI+JuX82XLG@public.gmane.org>
2016-03-16 5:49 ` Alexey Kardashevskiy
2016-03-16 5:49 ` Alexey Kardashevskiy
[not found] ` <56E8F3CC.3070203-sLpHqDYs0B2HXe+LvDLADg@public.gmane.org>
2016-03-16 6:09 ` Eli Cohen
2016-03-16 6:09 ` Eli Cohen
[not found] ` <20160316060947.GD66645-lgQlq6cFzJSjLWYaRI30zHI+JuX82XLG@public.gmane.org>
2016-03-16 8:34 ` Alexey Kardashevskiy
2016-03-16 8:34 ` Alexey Kardashevskiy
[not found] ` <56E91A78.5000700-sLpHqDYs0B2HXe+LvDLADg@public.gmane.org>
2016-03-16 9:45 ` Or Gerlitz
2016-03-16 9:45 ` Or Gerlitz
[not found] ` <CAJ3xEMgorN4r-Ls66rc3VwUBi=uhb==ih2=43ujrbPC=ts8E5g-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2016-03-17 1:40 ` Alexey Kardashevskiy
2016-03-17 1:40 ` Alexey Kardashevskiy
[not found] ` <56EA0B12.3070901-sLpHqDYs0B2HXe+LvDLADg@public.gmane.org>
2016-03-17 5:05 ` Or Gerlitz
2016-03-17 5:05 ` Or Gerlitz
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