On Fri, Feb 09, 2024 at 08:55:31AM -0700, Alex Williamson wrote:
> I think Kevin's point is also relative to this latter scenario, in the
> L1 instance of the nvgrace-gpu driver the mmap of the usemem BAR is
> cachable, but in the L2 instance of the driver where we only use the
> vfio-pci-core ops
On Thu, Nov 09, 2023 at 06:48:46PM -0500, Michael S. Tsirkin wrote:
> On Tue, Nov 07, 2023 at 11:52:17AM -0400, Jason Gunthorpe wrote:
> > On Tue, Nov 07, 2023 at 09:30:21AM -0500, Michael S. Tsirkin wrote:
> > > On Tue, Nov 07, 2023 at 10:12:37AM -0400, Jason Gunthorpe
On Fri, Dec 23, 2022 at 03:51:55PM +0900, Daisuke Matsuda wrote:
> +static bool rxe_ib_invalidate_range(struct mmu_interval_notifier *mni,
> + const struct mmu_notifier_range *range,
> + unsigned long cur_seq)
> +{
> + struct
On Fri, Dec 23, 2022 at 03:51:54PM +0900, Daisuke Matsuda wrote:
> @@ -733,60 +734,83 @@ static enum resp_states process_flush(struct rxe_qp *qp,
> /* Guarantee atomicity of atomic operations at the machine level. */
> static DEFINE_SPINLOCK(atomic_ops_lock);
>
> -static enum resp_states
On Mon, Jul 11, 2022 at 07:39:17PM -0700, Dan Williams wrote:
> Muchun Song wrote:
> > On Mon, Jul 04, 2022 at 11:38:16AM +0100, Matthew Wilcox wrote:
> > > On Mon, Jul 04, 2022 at 03:40:54PM +0800, Muchun Song wrote:
> > > > FSDAX page refcounts are 1-based, rather than 0-based: if refcount is
>
On Fri, Aug 27, 2021 at 09:42:21AM -0700, Dan Williams wrote:
> On Fri, Aug 27, 2021 at 6:05 AM Li, Zhijian wrote:
> >
> >
> > on 2021/8/27 20:10, Jason Gunthorpe wrote:
> > > On Fri, Aug 27, 2021 at 08:15:40AM +, lizhij...@fujitsu.com wrote:
>
On Fri, Aug 27, 2021 at 09:05:21PM +0800, Li, Zhijian wrote:
>
> on 2021/8/27 20:10, Jason Gunthorpe wrote:
> > On Fri, Aug 27, 2021 at 08:15:40AM +, lizhij...@fujitsu.com wrote:
> > > i looked over the change-log of hmm_vma_handle_pte(), and found that
> > >
On Fri, Aug 27, 2021 at 08:15:40AM +, lizhij...@fujitsu.com wrote:
> i looked over the change-log of hmm_vma_handle_pte(), and found that before
> 4055062 ("mm/hmm: add missing call to hmm_pte_need_fault in HMM_PFN_SPECIAL
> handling")
>
> hmm_vma_handle_pte() will not check pte_special(pte)
On Tue, Apr 20, 2021 at 04:04:57PM -0600, Alex Williamson wrote:
> > The migration control registers must be on a different VF from the VF
> > being plugged into a guest and the two VFs have to be in different
> > IOMMU groups to ensure they are isolated from each other.
>
> I think that's a
On Tue, Apr 20, 2021 at 05:28:33PM +0200, Christophe JAILLET wrote:
> 'in6' is unused. It is just declared and filled-in.
> It can be removed.
>
> This is a left over from commit 5ea8bbfc4929
> ("mlx4: Implement IP based gids support for RoCE/SRIOV")
>
> Signed-off-by: Christophe JAILLET
> ---
On Thu, Apr 15, 2021 at 05:21:16PM +0800, Wan Jiabing wrote:
> struct ipoib_cm_tx is defined at 245th line.
> And the definition is independent on the MACRO.
> The declaration here is unnecessary. Remove it.
>
> Signed-off-by: Wan Jiabing
> Reviewed-by: Christoph Lameter
> ---
>
On Tue, Apr 20, 2021 at 09:28:46PM +0800, liulongfang wrote:
> >> So, I still don't understand what the security risk you are talking about
> >> is,
> >> and what do you think the security design should look like?
> >> Can you elaborate on it?
> >
> > Each security domain must have its own PCI
On Tue, Apr 20, 2021 at 08:50:12PM +0800, liulongfang wrote:
> On 2021/4/19 20:33, Jason Gunthorpe wrote:
> > On Mon, Apr 19, 2021 at 08:24:40PM +0800, liulongfang wrote:
> >
> >>> I'm also confused how this works securely at all, as a general rule a
> >>>
On Tue, Apr 13, 2021 at 10:19:25PM +0800, Hao Sun wrote:
> Jason Gunthorpe 于2021年4月13日周二 下午9:45写道：
> >
> > On Tue, Apr 13, 2021 at 09:42:43PM +0800, Hao Sun wrote:
> > > Jason Gunthorpe 于2021年4月13日周二 下午9:34写道：
> > > >
> > > > On Tue, Apr 13, 2021
On Mon, Apr 19, 2021 at 08:24:40PM +0800, liulongfang wrote:
> > I'm also confused how this works securely at all, as a general rule a
> > VFIO PCI driver cannot access the MMIO memory of the function it is
> > planning to assign to the guest. There is a lot of danger that the
> > guest could
1 file changed, 12 insertions(+), 14 deletions(-)
Wow, yikes, that "kfree_const(dev->kobj.name);" is really creative
Reviewed-by: Jason Gunthorpe
Though I dislike ignoring the error code from dev_set_name(), I think
Greg would prefer this:
diff --git a/drivers/base/node.c b/driv
On Fri, Apr 16, 2021 at 10:23:32AM -0700, Jacob Pan wrote:
> Perhaps similar to cgroup v1 vs v2, it took a long time and with known
> limitations in v1.
cgroup v2 is still having transition problems, if anything it is a
cautionary tale to think really hard about uAPI because transitioning
can be
On Fri, Apr 16, 2021 at 04:26:19PM +0200, Auger Eric wrote:
> This was largely done during several confs including plumber, KVM forum,
> for several years. Also API docs were shared on the ML. I don't remember
> any voice was raised at those moments.
I don't think anyone objects to the high
On Fri, Apr 16, 2021 at 03:38:02PM +0200, Auger Eric wrote:
> The redesign requirement came pretty late in the development process.
> The iommu user API is upstream for a while, the VFIO interfaces have
> been submitted a long time ago and under review for a bunch of time.
> Redesigning
On Thu, Apr 15, 2021 at 03:11:19PM +0200, Auger Eric wrote:
> Hi Jason,
>
> On 4/1/21 6:03 PM, Jason Gunthorpe wrote:
> > On Thu, Apr 01, 2021 at 02:08:17PM +, Liu, Yi L wrote:
> >
> >> DMA page faults are delivered to root-complex via page request message and
&
On Tue, Apr 13, 2021 at 11:36:22AM +0800, Longfang Liu wrote:
> Register the live migration driver of the accelerator module to vfio
>
> Signed-off-by: Longfang Liu
> drivers/vfio/pci/vfio_pci.c | 11 +++
> drivers/vfio/pci/vfio_pci_private.h | 9 +
> 2 files changed,
On Thu, Apr 15, 2021 at 04:47:34PM +1000, Stephen Rothwell wrote:
> Hi all,
>
> Today's linux-next merge of the vfio tree got a conflict in:
>
> drivers/gpu/drm/i915/gvt/gvt.c
>
> between commit:
>
> 9ff06c385300 ("drm/i915/gvt: Remove references to struct drm_device.pdev")
>
> from the
On Thu, Apr 15, 2021 at 01:33:24PM +0800, Lu Baolu wrote:
> Hi Jason,
>
> On 4/14/21 7:26 PM, Jason Gunthorpe wrote:
> > On Wed, Apr 14, 2021 at 02:22:09PM +0800, Lu Baolu wrote:
> >
> > > I still worry about supervisor pasid allocation.
> > >
> > &g
On Wed, Apr 14, 2021 at 02:41:52PM +, David Laight wrote:
> So whatever driver initialises the target needs to configure whatever
> target-specific register enables the RO transfers themselves.
RDMA in general, and mlx5 in particular, is a layered design:
mlx5_core <- owns the PCI function,
On Wed, Apr 14, 2021 at 10:16:28AM -0400, Tom Talpey wrote:
> On 4/12/2021 6:48 PM, Jason Gunthorpe wrote:
> > On Mon, Apr 12, 2021 at 04:20:47PM -0400, Tom Talpey wrote:
> >
> > > So the issue is only in testing all the providers and platforms,
> > > to be sure
On Wed, Apr 14, 2021 at 02:22:09PM +0800, Lu Baolu wrote:
> I still worry about supervisor pasid allocation.
>
> If we use iommu_sva_alloc_pasid() to allocate a supervisor pasid, which
> mm should the pasid be set? I've ever thought about passing _mm to
> iommu_sva_alloc_pasid(). But if you add
On Tue, Apr 13, 2021 at 07:20:12PM +0200, Dmitry Vyukov wrote:
> > > Plus users are going to be seeing this as well. According to the commit
> > > message for 69bacee7f9ad ("mm: Add unsafe_follow_pfn") "Unfortunately
> > > there's some users where this is not fixable (like v4l userptr of iomem
>
On Tue, Apr 13, 2021 at 05:11:03PM +0800, Jiapeng Chong wrote:
> Fix the following clang warning:
>
> drivers/infiniband/hw/qib/qib_iba7322.c:803:19: warning: unused function
> 'qib_read_ureg' [-Wunused-function].
>
> Reported-by: Abaci Robot
> Signed-off-by: Jiapeng Chong
> ---
>
On Tue, Apr 13, 2021 at 09:29:41AM +0300, Leon Romanovsky wrote:
> On Mon, Apr 12, 2021 at 07:58:47PM -0300, Jason Gunthorpe wrote:
> > On Wed, Mar 31, 2021 at 08:43:12PM +0200, Håkon Bugge wrote:
> > > ib_modify_qp() is an expensive operation on some HCAs running
> > &g
On Tue, Apr 13, 2021 at 09:42:43PM +0800, Hao Sun wrote:
> Jason Gunthorpe 于2021年4月13日周二 下午9:34写道：
> >
> > On Tue, Apr 13, 2021 at 11:36:41AM +0800, Hao Sun wrote:
> > > Hi
> > >
> > > When using Healer(https://github.com/SunHao-0/healer/tree/dev) to fu
On Tue, Apr 13, 2021 at 10:54:04AM +0200, Daniel Wagner wrote:
> Hmm, I am struggling with your last statement. If a worker does an
> allocation it might block. I understand this is something which a worker
> in a WQ_MEM_RECLAIM context is not allowed to do.
>
> My aim is still to get rid of the
On Tue, Apr 13, 2021 at 11:36:41AM +0800, Hao Sun wrote:
> Hi
>
> When using Healer(https://github.com/SunHao-0/healer/tree/dev) to fuzz
> the Linux kernel, I found two use-after-free bugs which have been
> reported a long time ago by Syzbot.
> Although the corresponding patches have been merged
On Wed, Mar 31, 2021 at 08:43:12PM +0200, Håkon Bugge wrote:
> ib_modify_qp() is an expensive operation on some HCAs running
> virtualized. This series removes two ib_modify_qp() calls from RDS.
>
> I am sending this as a v3, even though it is the first sent to
> net. This because the IB Core
On Mon, Apr 12, 2021 at 04:20:47PM -0400, Tom Talpey wrote:
> So the issue is only in testing all the providers and platforms,
> to be sure this new behavior isn't tickling anything that went
> unnoticed all along, because no RDMA provider ever issued RO.
The mlx5 ethernet driver has run in RO
On Mon, Apr 12, 2021 at 06:35:35PM +, Haakon Bugge wrote:
>
>
> > On 7 Apr 2021, at 18:41, Haakon Bugge wrote:
> >
> >
> >
> >> On 1 Apr 2021, at 19:51, Jason Gunthorpe wrote:
> >>
> >> On Wed, Mar 31, 2021 at 07:54:17PM +,
On Thu, Apr 08, 2021 at 11:31:40AM +, Wang Wensheng wrote:
> Fix to return a negative error code from the error handling
> case instead of 0, as done elsewhere in this function.
>
> Fixes: 7724105686e7 ("IB/hfi1: add driver files")
> Reported-by: Hulk Robot
> Signed-off-by: Wang Wensheng
>
On Thu, Apr 08, 2021 at 11:31:37AM +, Wang Wensheng wrote:
> Fix to return a negative error code from the error handling
> case instead of 0, as done elsewhere in this function.
>
> Fixes: 1ac5a4047975 ("RDMA/bnxt_re: Add bnxt_re RoCE driver")
> Reported-by: Hulk Robot
> Signed-off-by: Wang
On Thu, Apr 08, 2021 at 11:31:35AM +, Wang Wensheng wrote:
> Fix to return a negative error code from the error handling
> case instead of 0, as done elsewhere in this function.
>
> Fixes: 82af6d19d8d9 ("RDMA/qedr: Fix synchronization methods and memory leaks
> in qedr")
> Reported-by: Hulk
On Thu, Apr 08, 2021 at 09:50:30AM -0700, Bart Van Assche wrote:
> On 4/8/21 4:31 AM, Wang Wensheng wrote:
> > Fix to return a negative error code from the error handling
> > case instead of 0, as done elsewhere in this function.
> >
> > Fixes: db7683d7deb2 ("IB/srpt: Fix login-related race
On Mon, Apr 12, 2021 at 02:49:09PM +0200, Daniel Wagner wrote:
> I've grepped through the code and didn't find anything which supports
> the guarantee claim. Neither mm nor schedule seems to care about this
> flag nor workqueue.c (except the early init bits). Or I must miss
> something.
It is
On Mon, Apr 12, 2021 at 02:23:30PM +0200, Daniel Wagner wrote:
> Drop the WQ_MEM_RECLAIM flag as it is not needed and introduces
> warnings.
>
> The documentation says "all wq which might be used in the memory
> reclaim paths MUST have this flag set. The wq is guaranteed to have at
> least one
()
This movement looks OK though
Reviewed-by: Jason Gunthorpe
Jason
On Fri, Apr 09, 2021 at 08:24:00AM -0600, Alex Williamson wrote:
> > > #define DRIVER_VERSION "0.3"
> > > #define DRIVER_AUTHOR"Alex Williamson "
> > > #define DRIVER_DESC "VFIO - User Level meta-driver"
> > >
> > > +#define VFIO_MAGIC 0x5646494f /* "VFIO" */
> > Move to
On Fri, Apr 09, 2021 at 12:20:09PM -0400, Dennis Dalessandro wrote:
> On 4/8/2021 6:00 PM, Stephen Rothwell wrote:
> > Hi all,
> >
> > Commit
> >
> >042a00f93aad ("IB/{ipoib,hfi1}: Add a timeout handler for rdma_netdev")
> >
> > is missing a Signed-off-by from its author.
>
> Doh! That's
On Fri, Apr 09, 2021 at 10:26:21AM -0400, Tom Talpey wrote:
> My belief is that the biggest risk is from situations where completions
> are batched, and therefore polling is used to detect them without
> interrupts (which explicitly).
We don't do this in the kernel.
All kernel ULPs only read
Hi Linus,
Nothing very exciting here, just a few small bug fixes. No red flags
for this release have shown up.
Thanks,
Jason
The following changes since commit a5e13c6df0e41702d2b2c77c8ad41677ebb065b3:
Linux 5.12-rc5 (2021-03-28 15:48:16 -0700)
are available in the Git repository at:
On Thu, Apr 08, 2021 at 01:38:17PM +0200, Daniel Vetter wrote:
> If you want to change this, we need automatic conflict resolution like apt
> and other package managers have, with suggestions how to fix the config if
> you want to enable a driver, but some of its requirements are missing. The
>
On Wed, Apr 07, 2021 at 03:44:35PM +, Parav Pandit wrote:
> > If it returns EOPNOTUPP then the remove is never called so if it allocated
> > memory and left it allocated then it is leaking memory.
> >
> I probably confused you. There is no leak today because add_one
> allocates memory, and
On Wed, Apr 07, 2021 at 11:50:02PM +, Tian, Kevin wrote:
> > From: Jason Gunthorpe
> > Sent: Wednesday, April 7, 2021 8:21 PM
> >
> > On Wed, Apr 07, 2021 at 02:08:33AM +, Tian, Kevin wrote:
> >
> > > > Because if you don't then we
On Sat, Apr 03, 2021 at 04:53:55AM +, Praveen Kumar Kannoju wrote:
> To update xlt (during mlx5_ib_reg_user_mr()), the driver can request up to
> 1 MB (order-8) memory, depending on the size of the MR. This costly
> allocation can sometimes take very long to return (a few seconds). This
>
On Wed, Apr 07, 2021 at 08:43:50PM +0200, Jean-Philippe Brucker wrote:
> * Get a container handle out of /dev/ioasid (or /dev/iommu, really.)
> No operation available since we don't know what the device and IOMMU
> capabilities are.
>
> * Attach the handle to a VF. With VFIO that would be
>
On Tue, Apr 06, 2021 at 04:54:57PM +0200, Christoph Hellwig wrote:
> On Tue, Apr 06, 2021 at 11:40:39AM -0300, Jason Gunthorpe wrote:
> > Yes, but the complexity is how the drivers are constructed they are
> > designed to reject flags they don't know about..
> >
> > Hum
On Wed, Apr 07, 2021 at 03:06:35PM +, Parav Pandit wrote:
>
>
> > From: Jason Gunthorpe
> > Sent: Tuesday, April 6, 2021 9:17 PM
> >
> > On Mon, Apr 05, 2021 at 08:49:56AM +0300, Leon Romanovsky wrote:
> > > @@ -2293,6 +2295,17 @@ static v
On Wed, Apr 07, 2021 at 02:08:33AM +, Tian, Kevin wrote:
> > Because if you don't then we enter insane world where a PASID is being
> > created under /dev/ioasid but its translation path flows through setup
> > done by VFIO and the whole user API becomes an incomprehensible mess.
> >
> > How
On Wed, Apr 07, 2021 at 08:17:50AM +, Tian, Kevin wrote:
> > From: Jason Gunthorpe
> > Sent: Tuesday, April 6, 2021 8:43 PM
> >
> > On Tue, Apr 06, 2021 at 09:35:17AM +0800, Jason Wang wrote:
> >
> > > > VFIO and VDPA has no buisness having map/unma
On Wed, Apr 07, 2021 at 09:58:05AM +0800, Lu Baolu wrote:
> I've ever tried to implement a bus iommu_ops for mdev devices.
>
> https://lore.kernel.org/lkml/20201030045809.957927-1-baolu...@linux.intel.com/
>
> Any comments?
You still have the symbol_get, so something continues to be wrong with
On Mon, Mar 25, 2019 at 09:30:34AM +0800, Lu Baolu wrote:
> A parent device might create different types of mediated
> devices. For example, a mediated device could be created
> by the parent device with full isolation and protection
> provided by the IOMMU. One usage case could be found on
>
On Mon, Apr 05, 2021 at 08:49:56AM +0300, Leon Romanovsky wrote:
> @@ -2293,6 +2295,17 @@ static void ib_sa_event(struct ib_event_handler
> *handler,
> }
> }
>
> +static bool ib_sa_client_supported(struct ib_device *device)
> +{
> + unsigned int i;
> +
> +
On Tue, Apr 06, 2021 at 04:15:52PM +0200, Christoph Hellwig wrote:
> On Tue, Apr 06, 2021 at 11:04:37AM -0300, Jason Gunthorpe wrote:
> > It might be idiodic, but I have to keep the uverbs thing working
> > too.
> >
> > There is a lot of assumption baked in to all the d
On Tue, Apr 06, 2021 at 02:30:34PM +0200, Christoph Hellwig wrote:
> On Tue, Apr 06, 2021 at 09:13:12AM -0300, Jason Gunthorpe wrote:
> > So we broadly have two choice
> > 1) Diverge the kernel and user interfaces and make the RDMA drivers
> > special case all the
On Tue, Apr 06, 2021 at 09:35:17AM +0800, Jason Wang wrote:
> > VFIO and VDPA has no buisness having map/unmap interfaces once we have
> > /dev/ioasid. That all belongs in the iosaid side.
> >
> > I know they have those interfaces today, but that doesn't mean we have
> > to keep using them for
On Tue, Apr 06, 2021 at 01:27:15AM +, Tian, Kevin wrote:
>
> and here is one example why using existing VFIO/VDPA interface makes
> sense. say dev1 (w/ sva) and dev2 (w/o sva) are placed in a single VFIO
> container.
Forget about SVA, it is an irrelevant detail of how a PASID is
On Tue, Apr 06, 2021 at 01:02:05AM +, Tian, Kevin wrote:
> > From: Jason Gunthorpe
> > Sent: Tuesday, April 6, 2021 7:40 AM
> >
> > On Fri, Apr 02, 2021 at 07:58:02AM +, Tian, Kevin wrote:
> > > > From: Jason Gunthorpe
> > > > Sent: Thursd
On Tue, Apr 06, 2021 at 12:37:35AM +, Tian, Kevin wrote:
> With nested translation it is GVA->GPA->HPA. The kernel needs to
> fix fault related to GPA->HPA (managed by VFIO/VDPA) while
> handle_mm_fault only handles HVA->HPA. In this case, the 2nd-level
> page fault is expected to be
On Tue, Apr 06, 2021 at 08:58:54AM +0300, Leon Romanovsky wrote:
> On Tue, Apr 06, 2021 at 07:27:17AM +0200, Christoph Hellwig wrote:
> > On Tue, Apr 06, 2021 at 08:23:28AM +0300, Leon Romanovsky wrote:
> > > The same proposal (enable unconditionally) was raised during
> > > submission
On Tue, Apr 06, 2021 at 08:09:43AM +0300, Leon Romanovsky wrote:
> On Tue, Apr 06, 2021 at 10:37:38AM +0800, Honggang LI wrote:
> > On Mon, Apr 05, 2021 at 08:23:54AM +0300, Leon Romanovsky wrote:
> > > From: Leon Romanovsky
> > >
> > > From Avihai,
> > >
> > > Relaxed Ordering is a PCIe
On Mon, Apr 05, 2021 at 11:42:31PM +, Chuck Lever III wrote:
> We need to get a better idea what correctness testing has been done,
> and whether positive correctness testing results can be replicated
> on a variety of platforms.
RO has been rolling out slowly on mlx5 over a few years and
On Fri, Apr 02, 2021 at 08:22:28AM +, Tian, Kevin wrote:
> > From: Jason Gunthorpe
> > Sent: Tuesday, March 30, 2021 9:29 PM
> >
> > >
> > > First, userspace may use ioasid in a non-SVA scenario where ioasid is
> > > bound to specific securit
On Fri, Apr 02, 2021 at 07:58:02AM +, Tian, Kevin wrote:
> > From: Jason Gunthorpe
> > Sent: Thursday, April 1, 2021 9:47 PM
> >
> > On Thu, Apr 01, 2021 at 01:43:36PM +, Liu, Yi L wrote:
> > > > From: Jason Gunthorpe
> > > > Sent: Thursd
On Fri, Apr 02, 2021 at 07:30:23AM +, Tian, Kevin wrote:
> > From: Jason Gunthorpe
> > Sent: Friday, April 2, 2021 12:04 AM
> >
> > On Thu, Apr 01, 2021 at 02:08:17PM +, Liu, Yi L wrote:
> >
> > > DMA page faults are delivered t
On Mon, Apr 05, 2021 at 03:41:15PM +0200, Christoph Hellwig wrote:
> On Mon, Apr 05, 2021 at 08:23:54AM +0300, Leon Romanovsky wrote:
> > From: Leon Romanovsky
> >
> > >From Avihai,
> >
> > Relaxed Ordering is a PCIe mechanism that relaxes the strict ordering
> > imposed on PCI transactions,
On Fri, Apr 02, 2021 at 06:29:55PM -0700, Kees Cook wrote:
> On Fri, Apr 02, 2021 at 08:30:18PM -0300, Jason Gunthorpe wrote:
> > On Fri, Apr 02, 2021 at 04:03:30PM -0700, Kees Cook wrote:
> >
> > > > relevant. It seems to me that the hw_counters 'struct attribute_gro
On Fri, Apr 02, 2021 at 04:03:30PM -0700, Kees Cook wrote:
> > relevant. It seems to me that the hw_counters 'struct attribute_group'
> > should probably be its own kobj within both of these structures so they
> > can have their own sysfs ops (unless there is some other way to do this
> > that I
On Thu, Apr 01, 2021 at 10:10:28AM +0800, YueHaibing wrote:
> make W=1 warns this:
>
> In file included from drivers/infiniband/sw/rdmavt/mmap.c:51:0:
> ./include/rdma/uverbs_ioctl.h:937:1:
> warning: ‘_uverbs_get_const_unsigned’ defined but not used
> [-Wunused-function]
>
On Thu, Apr 01, 2021 at 07:04:01AM +, Liu, Yi L wrote:
> After reading your reply in
> https://lore.kernel.org/linux-iommu/20210331123801.gd1463...@nvidia.com/#t
> So you mean /dev/ioasid FD is per-VM instead of per-ioasid, so above skeleton
> doesn't suit your idea.
You can do it one PASID
On Thu, Apr 01, 2021 at 01:43:36PM +, Liu, Yi L wrote:
> > From: Jason Gunthorpe
> > Sent: Thursday, April 1, 2021 9:16 PM
> >
> > On Thu, Apr 01, 2021 at 01:10:48PM +, Liu, Yi L wrote:
> > > > From: Jason Gunthorpe
> > > > Sent: Thursda
On Wed, Mar 24, 2021 at 10:09:39PM +0800, YueHaibing wrote:
> Fix smatch warning:
>
> drivers/infiniband/ulp/srpt/ib_srpt.c:2341 srpt_cm_req_recv() warn: passing
> zero to 'PTR_ERR'
>
> Use PTR_ERR_OR_ZERO instead of PTR_ERR
>
> Fixes: 847462de3a0a ("IB/srpt: Fix srpt_cm_req_recv() error path
On Thu, Apr 01, 2021 at 01:10:48PM +, Liu, Yi L wrote:
> > From: Jason Gunthorpe
> > Sent: Thursday, April 1, 2021 7:47 PM
> [...]
> > I'm worried Intel views the only use of PASID in a guest is with
> > ENQCMD, but that is not consistent with the industry. We ne
On Thu, Apr 01, 2021 at 01:38:46PM +, Liu, Yi L wrote:
> > From: Jean-Philippe Brucker
> > Sent: Thursday, April 1, 2021 8:05 PM
> [...]
> >
> > Also wondering about:
> >
> > * Querying IOMMU nesting capabilities before binding page tables (which
> > page table formats are supported?). We
On Thu, Apr 01, 2021 at 05:06:52PM +0300, Dan Carpenter wrote:
> > diff --git a/drivers/base/node.c b/drivers/base/node.c
> > index f449dbb2c74666..89c28952863977 100644
> > +++ b/drivers/base/node.c
> > @@ -319,25 +319,24 @@ void node_add_cache(unsigned int nid, struct
> > node_cache_attrs
On Thu, Apr 01, 2021 at 02:05:00PM +0200, Jean-Philippe Brucker wrote:
> On Thu, Apr 01, 2021 at 07:04:01AM +, Liu, Yi L wrote:
> > > - how about AMD and ARM's vSVA support? Their PASID allocation and page
> > > table
> > > happens within guest. They only need to bind the guest PASID table
3 files changed, 2 insertions(+), 32 deletions(-)
Reviewed-by: Jason Gunthorpe
Jason
On Thu, Apr 01, 2021 at 10:23:55AM -0700, Jacob Pan wrote:
> Hi Jason,
>
> On Wed, 31 Mar 2021 21:37:05 -0300, Jason Gunthorpe wrote:
>
> > On Wed, Mar 31, 2021 at 04:46:21PM -0700, Jacob Pan wrote:
> > > Hi Jason,
> > >
> > > On Wed, 31 Mar 2021
On Thu, Apr 01, 2021 at 02:08:17PM +, Liu, Yi L wrote:
> DMA page faults are delivered to root-complex via page request message and
> it is per-device according to PCIe spec. Page request handling flow is:
>
> 1) iommu driver receives a page request from device
> 2) iommu driver parses the
On Wed, Mar 31, 2021 at 07:54:17PM +, Santosh Shilimkar wrote:
> [...]
>
> Thanks Haakon. Patchset looks fine by me.
> Acked-by: Santosh Shilimkar
Jakub/Dave are you OK if I take this RDS patch rdma to rdma's tree?
Thanks,
Jason
On Thu, Apr 01, 2021 at 04:38:44AM +, Liu, Yi L wrote:
> > From: Jason Gunthorpe
> > Sent: Wednesday, March 31, 2021 8:41 PM
> >
> > On Wed, Mar 31, 2021 at 07:38:36AM +, Liu, Yi L wrote:
> >
> > > The reason is /dev/ioasid FD is per-VM since the
On Thu, Apr 01, 2021 at 01:20:05PM +1100, Alistair Popple wrote:
> On Thursday, 1 April 2021 11:48:13 AM AEDT Jason Gunthorpe wrote:
> > On Thu, Apr 01, 2021 at 11:45:57AM +1100, Alistair Popple wrote:
> > > On Thursday, 1 April 2021 12:46:04 AM AEDT Jason Gunthorpe wrote:
>
On Mon, Mar 29, 2021 at 05:10:53PM -0600, Alex Williamson wrote:
> On Tue, 23 Mar 2021 16:32:13 -0300
> Jason Gunthorpe wrote:
>
> > On Mon, Mar 22, 2021 at 10:40:16AM -0600, Alex Williamson wrote:
> >
> > > Of course if you start looking at features like migrat
On Thu, Apr 01, 2021 at 12:00:39PM +0300, Dan Carpenter wrote:
> Hi Keith,
>
> I've been trying to figure out ways Smatch can check for device managed
> resources. Like adding rules that if we call dev_set_name(>bar)
> then it's device managaged and if there is a kfree(foo) without calling
>
On Thu, Apr 01, 2021 at 01:52:01PM +0100, Matthew Wilcox wrote:
> On Thu, Apr 01, 2021 at 09:28:03AM -0300, Jason Gunthorpe wrote:
> > On Thu, Apr 01, 2021 at 12:26:56PM +0100, Matthew Wilcox wrote:
> > > On Thu, Apr 01, 2021 at 08:05:37AM +0100, Christoph Hellwig wrote:
>
On Wed, Mar 31, 2021 at 07:29:22AM +0300, Dan Carpenter wrote:
> On Tue, Mar 30, 2021 at 07:04:30PM +0200, Paolo Bonzini wrote:
> > On 30/03/21 17:26, syzbot wrote:
> > > Hello,
> > >
> > > syzbot found the following issue on:
> > >
> > > HEAD commit:93129492 Add linux-next specific files
On Thu, Apr 01, 2021 at 12:26:56PM +0100, Matthew Wilcox wrote:
> On Thu, Apr 01, 2021 at 08:05:37AM +0100, Christoph Hellwig wrote:
> > On Wed, Mar 31, 2021 at 07:47:01PM +0100, Matthew Wilcox (Oracle) wrote:
> > > - Mirror members of struct page (for pagecache / anon) into struct folio,
> > >
On Thu, Apr 01, 2021 at 11:45:57AM +1100, Alistair Popple wrote:
> On Thursday, 1 April 2021 12:46:04 AM AEDT Jason Gunthorpe wrote:
> > On Thu, Apr 01, 2021 at 12:27:52AM +1100, Alistair Popple wrote:
> > > On Thursday, 1 April 2021 12:18:54 AM AEDT Jason Gunthorpe wrote:
>
On Wed, Mar 31, 2021 at 04:46:21PM -0700, Jacob Pan wrote:
> Hi Jason,
>
> On Wed, 31 Mar 2021 09:38:01 -0300, Jason Gunthorpe wrote:
>
> > > > Get rid of the ioasid set.
> > > >
> > > > Each driver has its own list of allowed ioasids.
&
On Wed, Mar 31, 2021 at 10:01:05AM +0800, Tang Yizhou wrote:
> spinlock can be initialized automatically with DEFINE_SPINLOCK()
> rather than explicitly calling spin_lock_init().
>
> Reported-by: Hulk Robot
> Signed-off-by: Tang Yizhou
> ---
> drivers/infiniband/hw/cxgb4/cm.c | 3 +--
> 1 file
On Wed, Mar 31, 2021 at 11:20:30AM -0700, Jacob Pan wrote:
> Hi Jason,
>
> On Wed, 31 Mar 2021 14:31:48 -0300, Jason Gunthorpe wrote:
>
> > > > We should try to avoid hidden behind the scenes kernel
> > > > interconnections between subsystems.
> >
On Thu, Mar 25, 2021 at 11:39:28AM -0300, Jason Gunthorpe wrote:
> On Tue, Mar 23, 2021 at 09:27:38PM -0700, Aruna Ramakrishna wrote:
>
> > > Do you have benchmarks that show the performance of the high order
> > > pages is not relavent? I'm a bit surprised to hear that
&g
On Wed, Mar 31, 2021 at 09:34:57AM -0700, Jacob Pan wrote:
> "3.3 PASID translation
> To support PASID isolation for Shared Work Queues used by VMs, the CPU must
> provide a way for the PASID to be communicated to the device in the DMWr
> transaction. On Intel CPUs, the CPU provides a PASID
On Wed, Mar 31, 2021 at 09:04:32AM -0700, Dan Williams wrote:
> On Wed, Mar 31, 2021 at 6:10 AM Jason Gunthorpe wrote:
> >
> > On Tue, Mar 30, 2021 at 04:36:42PM -0700, Dan Williams wrote:
> > > +static int cxl_mem_add_memdev(struct cxl_mem *cxlm)
> > > +{
>
On Thu, Apr 01, 2021 at 12:27:52AM +1100, Alistair Popple wrote:
> On Thursday, 1 April 2021 12:18:54 AM AEDT Jason Gunthorpe wrote:
> > On Wed, Mar 31, 2021 at 11:59:28PM +1100, Alistair Popple wrote:
> >
> > > I guess that makes sense as the split could go either way a
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