On Thu, Apr 15, 2021 at 04:24:15PM -0400, Konrad Rzeszutek Wilk wrote:
> So you are exposing these two:
> EXPORT_SYMBOL_GPL(get_vm_area);
> EXPORT_SYMBOL_GPL(ioremap_page_range);
>
> But if you used vmap wouldn't you get the same thing for free?
Yes, this needs to go into some vmap version, pre
On Fri, Apr 16, 2021 at 04:27:55PM +0100, Matthew Wilcox wrote:
> On Thu, Apr 15, 2021 at 08:08:32PM +0200, Jesper Dangaard Brouer wrote:
> > See below patch. Where I swap32 the dma address to satisfy
> > page->compound having bit zero cleared. (It is the simplest fix I could
> > come up with).
>
Same comments as for the net driver. In addition to all the poking
into kernel internals the fact that this is duplicated in the two main
drivers should have been a huge red flag.
> +struct dma_range {
> + dma_addr_t dma;
> + u32 mapping_size;
> +};
That's a rather generic name that is bound to create a conflict sooner
or later.
> #include "hyperv_net.h"
> #include "netvsc_trace.h"
> +#include "../../hv/hyperv_vmbus.h"
Please move public interfaces out of the pr
> +static dma_addr_t hyperv_map_page(struct device *dev, struct page *page,
> + unsigned long offset, size_t size,
> + enum dma_data_direction dir,
> + unsigned long attrs)
> +{
> + phys_addr_t map, phys =
On Wed, Apr 14, 2021 at 10:49:41AM -0400, Tianyu Lan wrote:
> From: Tianyu Lan
>
> UIO HV driver should not load in the isolation VM for security reason.
> Return ENOTSUPP in the hv_uio_probe() in the isolation VM.
What is the "security reason"? After all a user can simply patch the
code and ju
> +EXPORT_SYMBOL_GPL(hv_ghcb_msr_write);
Just curious, who is going to use all these exports? These seems like
extremely low-level functionality. Isn't there a way to build a more
useful higher level API?
> +/*
> + * hv_set_mem_host_visibility - Set host visibility for specified memory.
> + */
I don't think this comment really clarifies anything over the function
name. What is 'host visibility'
> +int hv_set_mem_host_visibility(void *kbuffer, u32 size, u32 visibility)
Should size be a size_t?
Sh
On Tue, Apr 06, 2021 at 04:54:57PM +0200, Christoph Hellwig wrote:
> That is something everyone gets wrong at first (yourself included)
The yourself here should have been a yours truly or "myself", sorry.
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, it looks like someone has already been in here and we now have a
> IB_ACCESS_OPTIONAL concept.
>
> So
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 drivers that
> user/kernel is the same thing, we'd have to go in and break this.
>
> Essentially #2 ends
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 kernel stuff to force
> ACCESS_RELAXED_ORDERING when they are building MRs and processing
> FMR
On Tue, Apr 06, 2021 at 08:23:28AM +0300, Leon Romanovsky wrote:
> The same proposal (enable unconditionally) was raised during
> submission preparations and we decided to follow same pattern
> as other verbs objects which receive flag parameter.
A flags argument can be added when it actually is n
On Mon, Apr 05, 2021 at 08:23:55AM +0300, Leon Romanovsky wrote:
> From: Avihai Horon
>
> Add access flags parameter to ib_alloc_mr() and to ib_mr_pool_init(),
> and refactor relevant code. This parameter is used to pass MR access
> flags during MR allocation.
>
> In the following patches, the n
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, and thus, can improve performance.
>
> Until now, relaxed ordering could be set onl
DOMAIN_ATTR_PAGING is never used.
Signed-off-by: Christoph Hellwig
Acked-by: Will Deacon
Acked-by: Li Yang
---
drivers/iommu/iommu.c | 5 -
include/linux/iommu.h | 1 -
2 files changed, 6 deletions(-)
diff --git a/drivers/iommu/iommu.c b/drivers/iommu/iommu.c
index b212bf0261820b
Use an explicit enable_nesting method instead.
Signed-off-by: Christoph Hellwig
Acked-by: Will Deacon
Acked-by: Li Yang
---
drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c | 43 -
drivers/iommu/arm/arm-smmu/arm-smmu.c | 30 +++---
drivers/iommu/intel/iommu.c
The snoop_id is always set to ~(u32)0.
Signed-off-by: Christoph Hellwig
Acked-by: Will Deacon
Acked-by: Li Yang
---
drivers/iommu/fsl_pamu_domain.c | 5 ++---
drivers/iommu/fsl_pamu_domain.h | 1 -
2 files changed, 2 insertions(+), 4 deletions(-)
diff --git a/drivers/iommu/fsl_pamu_domain.c
Remove the now unused iommu attr infrastructure.
Signed-off-by: Christoph Hellwig
Acked-by: Will Deacon
---
drivers/iommu/iommu.c | 26 --
include/linux/iommu.h | 36
2 files changed, 62 deletions(-)
diff --git a/drivers/iommu
Add a fsl_pamu_configure_l1_stash API that qman_portal can call directly
instead of indirecting through the iommu attr API.
Signed-off-by: Christoph Hellwig
Acked-by: Will Deacon
Acked-by: Li Yang
---
arch/powerpc/include/asm/fsl_pamu_stash.h | 12 +++-
drivers/iommu/fsl_pamu_domain.c
use the iommu_domain_geometry structure instead.
Remove the now unused ->domain_window_enable iommu method.
Signed-off-by: Christoph Hellwig
Acked-by: Li Yang
---
drivers/iommu/fsl_pamu_domain.c | 182 +++-
drivers/iommu/fsl_pamu_domain.h | 15 ---
drivers/io
Merge the two fuctions that configure the ppaace into a single coherent
function. I somehow doubt we need the two pamu_config_ppaace calls,
but keep the existing behavior just to be on the safe side.
Signed-off-by: Christoph Hellwig
Acked-by: Li Yang
---
drivers/iommu/fsl_pamu_domain.c | 65
The win_addr and win_size parameters are always set to 0 and 1 << 36
respectively, so just hard code them.
Signed-off-by: Christoph Hellwig
---
drivers/iommu/fsl_pamu.c| 23 ---
drivers/iommu/fsl_pamu.h| 3 +--
drivers/iommu/fsl_pamu_domain.
Instead of a separate call to enable all devices from the list, just
enable the liodn once the device is attached to the iommu domain.
This also remove the DOMAIN_ATTR_FSL_PAMU_ENABLE iommu_attr.
Signed-off-by: Christoph Hellwig
Acked-by: Will Deacon
Acked-by: Li Yang
---
drivers/iommu
Hi all,
there are a bunch of IOMMU APIs that are entirely unused, or only used as
a private communication channel between the FSL PAMU driver and it's only
consumer, the qbman portal driver.
So this series drops a huge chunk of entirely unused FSL PAMU
functionality, then drops all kinds of unuse
Don't obsfucate the trivial bit flag check.
Signed-off-by: Christoph Hellwig
Acked-by: Will Deacon
---
drivers/iommu/iommu.c | 23 +--
1 file changed, 5 insertions(+), 18 deletions(-)
diff --git a/drivers/iommu/iommu.c b/drivers/iommu/iommu.c
index 58d1d11a8
The default geometry is the same as the one set by qman_port given
that FSL_PAMU depends on having 64-bit physical and thus DMA addresses.
Remove the support to update the geometry and remove the now pointless
geom_size field.
Signed-off-by: Christoph Hellwig
Acked-by: Will Deacon
Acked-by: Li
Use an explicit set_pgtable_quirks method instead that just passes
the actual quirk bitmask instead.
Signed-off-by: Christoph Hellwig
Acked-by: Will Deacon
Acked-by: Li Yang
---
drivers/gpu/drm/msm/adreno/adreno_gpu.c | 5 +-
drivers/iommu/arm/arm-smmu/arm-smmu.c | 64
flushing a new
IOMMU_CMD_LINE_STRICT is used to turn the value into a tristate to
represent the default if not overriden by an explicit parameter.
Signed-off-by: Robin Murphy .
[ported on top of the other iommu_attr changes and added a few small
missing bits]
Signed-off-by: Christoph Hellwig
No good reason to split this functionality over two functions.
Signed-off-by: Christoph Hellwig
Acked-by: Will Deacon
Acked-by: Li Yang
---
drivers/iommu/fsl_pamu_domain.c | 59 +++--
1 file changed, 20 insertions(+), 39 deletions(-)
diff --git a/drivers/iommu
Keep the functionality to allocate the domain together.
Signed-off-by: Christoph Hellwig
Acked-by: Will Deacon
Acked-by: Li Yang
---
drivers/iommu/fsl_pamu_domain.c | 34 ++---
1 file changed, 10 insertions(+), 24 deletions(-)
diff --git a/drivers/iommu
The only domains allocated forces use of a single window. Remove all
the code related to multiple window support, as well as the need for
qman_portal to force a single window.
Remove the now unused DOMAIN_ATTR_WINDOWS iommu_attr.
Signed-off-by: Christoph Hellwig
Acked-by: Will Deacon
Acked-by
These are always wired to fixed values, so don't bother passing them as
arguments.
Signed-off-by: Christoph Hellwig
---
drivers/iommu/fsl_pamu.c| 14 +++---
drivers/iommu/fsl_pamu.h| 3 +--
drivers/iommu/fsl_pamu_domain.c | 6 +++---
3 files changed, 7 inser
None of the values returned by this function are ever queried. Also
remove the DOMAIN_ATTR_FSL_PAMUV1 enum value that is not otherwise used.
Signed-off-by: Christoph Hellwig
Acked-by: Will Deacon
Acked-by: Li Yang
---
drivers/iommu/fsl_pamu_domain.c | 30
The geometry information can be trivially queried from the iommu_domain
struture.
Signed-off-by: Christoph Hellwig
Acked-by: Will Deacon
Acked-by: Li Yang
---
drivers/iommu/iommu.c | 20 +++-
drivers/vfio/vfio_iommu_type1.c | 26 --
drivers
domain_window_disable is wired up by fsl_pamu, but never actually called.
Signed-off-by: Christoph Hellwig
Acked-by: Will Deacon
Acked-by: Li Yang
---
drivers/iommu/fsl_pamu_domain.c | 48 -
include/linux/iommu.h | 2 --
2 files changed, 50 deletions
For now I'll just pass the iommu_domain to iommu_get_dma_strict,
so that we can check for it. We can do additional cleanups on top
of that later.
On Tue, Mar 30, 2021 at 01:58:17PM +0100, Will Deacon wrote:
> pamu_config_ppaace() takes quite a few useless parameters at this stage,
> but anyway:
I'll see it it makes sense to throw in another patch at the end to cut
it down a bit more.
> Acked-by: Will Deacon
>
> Do you know if this driver
On Tue, Mar 30, 2021 at 01:46:51PM +0100, Will Deacon wrote:
> > + ret = pamu_config_ppaace(liodn, geom->aperture_start,
> > +geom->aperture_end - 1, ~(u32)0,
> > +0, dma_domain->snoop_id, dma_domain->stash_id,
> > +
On Tue, Mar 30, 2021 at 01:40:09PM +0100, Will Deacon wrote:
> > + ret = pamu_config_ppaace(liodn, geom->aperture_start,
> > +geom->aperture_end - 1, ~(u32)0,
>
> You're passing 'geom->aperture_end - 1' as the size here, but the old code
> seemed to _add_ 1:
>
> > -
On Tue, Mar 30, 2021 at 01:22:34PM +0100, Will Deacon wrote:
> > * win_arr contains information of the configured
> > * windows for a domain. This is allocated only
> > * when the number of windows for the domain are
> > * set.
> > */
>
> The last part of this comment is n
On Mon, Mar 15, 2021 at 05:46:43PM +0800, Yongji Xie wrote:
> On Mon, Mar 15, 2021 at 5:08 PM Christoph Hellwig wrote:
> >
> > On Mon, Mar 15, 2021 at 01:37:11PM +0800, Xie Yongji wrote:
> > > Export __receive_fd() so that some modules can use
> > > it to pass
On Thu, Mar 25, 2021 at 06:12:37AM +, Tian, Kevin wrote:
> Agree. The vSVA series is still undergoing a refactor according to Jason's
> comment thus won't be ready in short term. It's better to let this one
> go in first.
Would be great to get a few more reviews while we're at it :)
On Tue, Mar 23, 2021 at 11:40:11AM -0700, Vinicius Costa Gomes wrote:
> > Without an EXPORT_SYMBOL_GPL this is not going to be very useful for
> > your driver.
>
> Unless I am missing something here, the commit that made
> 'pci_enable_ptm()' private didn't remove the 'EXPORT_SYMBOL' from the
> fun
On Mon, Mar 22, 2021 at 09:18:20AM -0700, Vinicius Costa Gomes wrote:
> Make pci_enable_ptm() accessible from the drivers.
>
> Even if PTM still works on the platform I am using without calling
> this function, it might be possible that it's not always the case.
>
> Exposing this to the driver en
Remove the now unused iommu attr infrastructure.
Signed-off-by: Christoph Hellwig
---
drivers/iommu/iommu.c | 26 --
include/linux/iommu.h | 36
2 files changed, 62 deletions(-)
diff --git a/drivers/iommu/iommu.c b/drivers/iommu
Use an explicit set_pgtable_quirks method instead that just passes
the actual quirk bitmask instead.
Signed-off-by: Christoph Hellwig
Acked-by: Li Yang
---
drivers/gpu/drm/msm/adreno/adreno_gpu.c | 5 +-
drivers/iommu/arm/arm-smmu/arm-smmu.c | 64 +
drivers/iommu/arm
flushing a new
IOMMU_CMD_LINE_STRICT is used to turn the value into a tristate to
represent the default if not overriden by an explicit parameter.
Signed-off-by: Robin Murphy .
[ported on top of the other iommu_attr changes and added a few small
missing bits]
Signed-off-by: Christoph Hellwig
Don't obsfucate the trivial bit flag check.
Signed-off-by: Christoph Hellwig
---
drivers/iommu/iommu.c | 23 +--
1 file changed, 5 insertions(+), 18 deletions(-)
diff --git a/drivers/iommu/iommu.c b/drivers/iommu/iommu.c
index 58d1d11a8d5c10..052cef11ae30df 100644
Use an explicit enable_nesting method instead.
Signed-off-by: Christoph Hellwig
Acked-by: Li Yang
---
drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c | 43 -
drivers/iommu/arm/arm-smmu/arm-smmu.c | 30 +++---
drivers/iommu/intel/iommu.c | 31
The geometry information can be trivially queried from the iommu_domain
struture.
Signed-off-by: Christoph Hellwig
Acked-by: Li Yang
---
drivers/iommu/iommu.c | 20 +++-
drivers/vfio/vfio_iommu_type1.c | 26 --
drivers/vhost/vdpa.c
DOMAIN_ATTR_PAGING is never used.
Signed-off-by: Christoph Hellwig
Acked-by: Li Yang
---
drivers/iommu/iommu.c | 5 -
include/linux/iommu.h | 1 -
2 files changed, 6 deletions(-)
diff --git a/drivers/iommu/iommu.c b/drivers/iommu/iommu.c
index b212bf0261820b..9a4cda390993e6 100644
--- a
The snoop_id is always set to ~(u32)0.
Signed-off-by: Christoph Hellwig
Acked-by: Li Yang
---
drivers/iommu/fsl_pamu_domain.c | 5 ++---
drivers/iommu/fsl_pamu_domain.h | 1 -
2 files changed, 2 insertions(+), 4 deletions(-)
diff --git a/drivers/iommu/fsl_pamu_domain.c b/drivers/iommu
Instead of a separate call to enable all devices from the list, just
enablde the liodn one the device is attached to the iommu domain.
This also remove the DOMAIN_ATTR_FSL_PAMU_ENABLE iommu_attr.
Signed-off-by: Christoph Hellwig
Acked-by: Li Yang
---
drivers/iommu/fsl_pamu_domain.c | 47
No good reason to split this functionality over two functions.
Signed-off-by: Christoph Hellwig
Acked-by: Li Yang
---
drivers/iommu/fsl_pamu_domain.c | 59 +++--
1 file changed, 20 insertions(+), 39 deletions(-)
diff --git a/drivers/iommu/fsl_pamu_domain.c b
Merge the two fuctions that configure the ppaace into a single coherent
function. I somehow doubt we need the two pamu_config_ppaace calls,
but keep the existing behavior just to be on the safe side.
Signed-off-by: Christoph Hellwig
Acked-by: Li Yang
---
drivers/iommu/fsl_pamu_domain.c | 65
Add a fsl_pamu_configure_l1_stash API that qman_portal can call directly
instead of indirecting through the iommu attr API.
Signed-off-by: Christoph Hellwig
Acked-by: Li Yang
---
arch/powerpc/include/asm/fsl_pamu_stash.h | 12 +++-
drivers/iommu/fsl_pamu_domain.c | 16
use the iommu_domain_geometry structure instead.
Remove the now unused ->domain_window_enable iommu method.
Signed-off-by: Christoph Hellwig
Acked-by: Li Yang
---
drivers/iommu/fsl_pamu_domain.c | 182 +++-
drivers/iommu/fsl_pamu_domain.h | 17 ---
drivers/io
The only domains allocated forces use of a single window. Remove all
the code related to multiple window support, as well as the need for
qman_portal to force a single window.
Remove the now unused DOMAIN_ATTR_WINDOWS iommu_attr.
Signed-off-by: Christoph Hellwig
Acked-by: Li Yang
---
drivers
Keep the functionality to allocate the domain together.
Signed-off-by: Christoph Hellwig
Acked-by: Li Yang
---
drivers/iommu/fsl_pamu_domain.c | 34 ++---
1 file changed, 10 insertions(+), 24 deletions(-)
diff --git a/drivers/iommu/fsl_pamu_domain.c b/drivers/iommu
None of the values returned by this function are ever queried. Also
remove the DOMAIN_ATTR_FSL_PAMUV1 enum value that is not otherwise used.
Signed-off-by: Christoph Hellwig
Acked-by: Li Yang
---
drivers/iommu/fsl_pamu_domain.c | 30 --
include/linux/iommu.h
domain_window_disable is wired up by fsl_pamu, but never actually called.
Signed-off-by: Christoph Hellwig
Acked-by: Li Yang
---
drivers/iommu/fsl_pamu_domain.c | 48 -
include/linux/iommu.h | 2 --
2 files changed, 50 deletions(-)
diff --git a
Hi all,
there are a bunch of IOMMU APIs that are entirely unused, or only used as
a private communication channel between the FSL PAMU driver and it's only
consumer, the qbman portal driver.
So this series drops a huge chunk of entirely unused FSL PAMU
functionality, then drops all kinds of unuse
The default geometry is the same as the one set by qman_port given
that FSL_PAMU depends on having 64-bit physical and thus DMA addresses.
Remove the support to update the geometry and remove the now pointless
geom_size field.
Signed-off-by: Christoph Hellwig
Acked-by: Li Yang
---
drivers
On Mon, Mar 15, 2021 at 01:37:11PM +0800, Xie Yongji wrote:
> Export __receive_fd() so that some modules can use
> it to pass file descriptor between processes.
I really don't think any non-core code should do that, especilly not
modular mere driver code.
On Fri, Mar 12, 2021 at 04:18:24PM +, Robin Murphy wrote:
>> Let me know what you think of the version here:
>>
>> http://git.infradead.org/users/hch/misc.git/shortlog/refs/heads/iommu-cleanup
>>
>> I'll happily switch the patch to you as the author if you're fine with
>> that as well.
>
> I st
On Sun, Mar 14, 2021 at 11:44:52AM +0100, Auger Eric wrote:
> As mentionned by Robin, there are series planning to use
> DOMAIN_ATTR_NESTING to get info about the nested caps of the iommu (ARM
> and Intel):
>
> [Patch v8 00/10] vfio: expose virtual Shared Virtual Addressing to VMs
> patches 1, 2,
On Wed, Mar 10, 2021 at 06:39:57PM +, Robin Murphy wrote:
>> Actually... Just mirroring the iommu_dma_strict value into
>> struct iommu_domain should solve all of that with very little
>> boilerplate code.
>
> Yes, my initial thought was to directly replace the attribute with a
> common flag at
Hi all,
I just stumbled over the odd handling of module refcounts in the liquidio
driver. The big red flag is the call to module_refcount in
liquidio_watchdog, which will do the wrong thing for any external module
refcount, like a userspace open.
But more importantly the whole concept of acquiri
On Wed, Mar 10, 2021 at 10:15:01AM +0100, Christoph Hellwig wrote:
> On Thu, Mar 04, 2021 at 03:25:27PM +, Robin Murphy wrote:
> > On 2021-03-01 08:42, Christoph Hellwig wrote:
> >> Use explicit methods for setting and querying the information instead.
> >
> > N
On Thu, Mar 04, 2021 at 03:25:27PM +, Robin Murphy wrote:
> On 2021-03-01 08:42, Christoph Hellwig wrote:
>> Use explicit methods for setting and querying the information instead.
>
> Now that everyone's using iommu-dma, is there any point in bouncing this
> through th
On Fri, Mar 05, 2021 at 10:00:12AM +, Will Deacon wrote:
> > But one thing I'm not sure about is whether
> > IO_PGTABLE_QUIRK_ARM_OUTER_WBWA is something that other devices
> > *should* be using as well, but just haven't gotten around to yet.
>
> The intention is certainly that this would be a
On Thu, Mar 04, 2021 at 03:25:27PM +, Robin Murphy wrote:
> On 2021-03-01 08:42, Christoph Hellwig wrote:
>> Use explicit methods for setting and querying the information instead.
>
> Now that everyone's using iommu-dma, is there any point in bouncing this
> through th
Would vmalloc be another good user of this API?
> + /* May set ALLOC_NOFRAGMENT, fragmentation will return 1 page. */
> + if (!prepare_alloc_pages(gfp_mask, 0, preferred_nid, nodemask, &ac,
> &alloc_mask, &alloc_flags))
This crazy long line is really hard to follow.
> + ret
Signed-off-by: Christoph Hellwig
---
drivers/gpu/drm/msm/adreno/adreno_gpu.c | 2 +-
drivers/iommu/arm/arm-smmu/arm-smmu.c | 40 +++--
drivers/iommu/iommu.c | 9 ++
include/linux/iommu.h | 9 +-
4 files changed, 29 insertions
Use explicit methods for setting and querying the information instead.
Also remove the now unused iommu_domain_get_attr functionality.
Signed-off-by: Christoph Hellwig
---
drivers/iommu/amd/iommu.c | 23 ++---
drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c | 47
The geometry information can be trivially queried from the iommu_domain
struture.
Signed-off-by: Christoph Hellwig
---
drivers/iommu/iommu.c | 20 +++-
drivers/soc/fsl/qbman/qman_portal.c | 1 +
drivers/vfio/vfio_iommu_type1.c | 26
Signed-off-by: Christoph Hellwig
---
drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c | 40 ++---
drivers/iommu/arm/arm-smmu/arm-smmu.c | 30 ++--
drivers/iommu/intel/iommu.c | 28 +--
drivers/iommu/iommu.c | 8
Signed-off-by: Christoph Hellwig
---
drivers/iommu/iommu.c | 17 -
include/linux/iommu.h | 27 ---
2 files changed, 44 deletions(-)
diff --git a/drivers/iommu/iommu.c b/drivers/iommu/iommu.c
index 8490aefd4b41f8..b04e6cefe8520d 100644
--- a/drivers/iommu
The snoop_id is always set to ~(u32)0.
Signed-off-by: Christoph Hellwig
---
drivers/iommu/fsl_pamu_domain.c | 5 ++---
drivers/iommu/fsl_pamu_domain.h | 1 -
2 files changed, 2 insertions(+), 4 deletions(-)
diff --git a/drivers/iommu/fsl_pamu_domain.c b/drivers/iommu/fsl_pamu_domain.c
index
DOMAIN_ATTR_PAGING is never used.
Signed-off-by: Christoph Hellwig
---
drivers/iommu/iommu.c | 5 -
include/linux/iommu.h | 1 -
2 files changed, 6 deletions(-)
diff --git a/drivers/iommu/iommu.c b/drivers/iommu/iommu.c
index b212bf0261820b..9a4cda390993e6 100644
--- a/drivers/iommu
No good reason to split this functionality over two functions.
Signed-off-by: Christoph Hellwig
---
drivers/iommu/fsl_pamu_domain.c | 59 +++--
1 file changed, 20 insertions(+), 39 deletions(-)
diff --git a/drivers/iommu/fsl_pamu_domain.c b/drivers/iommu
Instead of a separate call to enable all devices from the list, just
enablde the liodn one the device is attached to the iommu domain.
This also remove the DOMAIN_ATTR_FSL_PAMU_ENABLE iommu_attr.
Signed-off-by: Christoph Hellwig
---
drivers/iommu/fsl_pamu_domain.c | 47
Merge the two fuctions that configure the ppaace into a single coherent
function. I somehow doubt we need the two pamu_config_ppaace calls,
but keep the existing behavior just to be on the safe side.
Signed-off-by: Christoph Hellwig
---
drivers/iommu/fsl_pamu_domain.c | 65
Add a fsl_pamu_configure_l1_stash API that qman_portal can call directly
instead of indirecting through the iommu attr API.
Signed-off-by: Christoph Hellwig
---
arch/powerpc/include/asm/fsl_pamu_stash.h | 12 +++-
drivers/iommu/fsl_pamu_domain.c | 16 +++-
drivers
use the iommu_domain_geometry structure instead.
Remove the now unused ->domain_window_enable iommu method.
Signed-off-by: Christoph Hellwig
---
drivers/iommu/fsl_pamu_domain.c | 182 +++-
drivers/iommu/fsl_pamu_domain.h | 17 ---
drivers/iommu/iomm
The only domains allocated forces use of a single window. Remove all
the code related to multiple window support, as well as the need for
qman_portal to force a single window.
Remove the now unused DOMAIN_ATTR_WINDOWS iommu_attr.
Signed-off-by: Christoph Hellwig
---
drivers/iommu/fsl_pamu.c
The default geometry is the same as the one set by qman_port given
that FSL_PAMU depends on having 64-bit physical and thus DMA addresses.
Remove the support to update the geometry and remove the now pointless
geom_size field.
Signed-off-by: Christoph Hellwig
---
drivers/iommu
Keep the functionality to allocate the domain together.
Signed-off-by: Christoph Hellwig
---
drivers/iommu/fsl_pamu_domain.c | 34 ++---
1 file changed, 10 insertions(+), 24 deletions(-)
diff --git a/drivers/iommu/fsl_pamu_domain.c b/drivers/iommu/fsl_pamu_domain.c
domain_window_disable is wired up by fsl_pamu, but never actually called.
Signed-off-by: Christoph Hellwig
---
drivers/iommu/fsl_pamu_domain.c | 48 -
include/linux/iommu.h | 2 --
2 files changed, 50 deletions(-)
diff --git a/drivers/iommu
None of the values returned by this function are ever queried. Also
remove the DOMAIN_ATTR_FSL_PAMUV1 enum value that is not otherwise used.
Signed-off-by: Christoph Hellwig
---
drivers/iommu/fsl_pamu_domain.c | 30 --
include/linux/iommu.h | 4
2
Hi all,
there are a bunch of IOMMU APIs that are entirely unused, or only used as
a private communication channel between the FSL PAMU driver and it's only
consumer, the qbman portal driver.
So this series drops a huge chunk of entirely unused FSL PAMU
functionality, then drops all kinds of unuse
On Thu, Feb 25, 2021 at 03:08:37PM +0800, Jiapeng Chong wrote:
> Fix the following sparse warning:
>
> kernel/kallsyms.c:457:12: warning: symbol 'arch_get_kallsym' was not
> declared. Should it be static?
>
> Reported-by: Abaci Robot
> Signed-off-by: Jiapeng Chong
Please just remove the functi
This is a pattern we've seen in a few other net driver, so we should
be ok. It just is rather hairy and needs a good justification, which
seems to be given here.
On Tue, Feb 02, 2021 at 08:00:51PM +0200, Or Gerlitz wrote:
> will look into this, any idea for a more suitable location?
Maybe just a new file under lib/ for now?
> > Overly long line. But we're also looking into generic helpers for
> > this kind of things, not sure if they made it to linux-nex
On Wed, Feb 03, 2021 at 12:56:35AM -0800, Sagi Grimberg wrote:
>
>>> Given how much ddp code there is can you split it into a separate file?
>>
>> mmm, do we need to check the preferences or get to a consensus among
>> the maintainers for that one?
>
> Not sure if moving it would be better here. Gi
Given how much ddp code there is can you split it into a separate file?
> +static
> +int nvme_tcp_offload_socket(struct nvme_tcp_queue *queue)
Please use the same coding style as the rest of the file, and not some
weirdo version.
On Mon, Feb 01, 2021 at 12:04:49PM +0200, Boris Pismenny wrote:
> +static __always_inline __must_check
> +size_t ddp_copy_to_iter(const void *addr, size_t bytes, struct iov_iter *i)
> +{
> + if (unlikely(!check_copy_size(addr, bytes, true)))
> + return 0;
> + else
> +
Just curious: what is the status of the various compat_alloc_user_space
removal patches? It would be great to kill the function off for good.
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