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,
From: Xiang Chen
It is not necessary to put free_iova_mem() inside of spinlock/unlock
iova_rbtree_lock which only leads to more completion for the spinlock.
It has a small promote on the performance after the change. And also
rename private_free_iova() as remove_iova() because the function will
> -Original Message-
> From: Dominique MARTINET
> Sent: 2021年4月19日 13:03
> To: Alice Guo (OSS)
> Subject: Re: [RFC v1 PATCH 3/3] driver: update all the code that use
> soc_device_match
>
> Alice Guo (OSS) wrote on Mon, Apr 19, 2021 at 12:27:22PM +0800:
> > From: Alice Guo
> >
> >
First comment overall for the whole serie:
Since it is the solution I had suggested when I reported the problem[1]
I have no qualm on the approach, comments for individual patches
follow.
[1] http://lore.kernel.org/r/YGGZJjAxA1IO+/v...@atmark-techno.com
Alice Guo (OSS) wrote on Mon, Apr 19,
From: Alice Guo
In i.MX8M boards, the registration of SoC device is later than caam
driver which needs it. Caam driver needs soc_device_match to provide
-EPROBE_DEFER when no SoC device is registered and no
early_soc_dev_attr.
Signed-off-by: Alice Guo
---
drivers/base/soc.c | 5 +
1 file
Intel IPU(Image Processing Unit) has its own (IO)MMU hardware,
The IPU driver allocates its own page table that is not mapped
via the DMA, and thus the Intel IOMMU driver blocks access giving
this error:
DMAR: DRHD: handling fault status reg 3
DMAR: [DMA Read] Request device [00:05.0] PASID
From: Alice Guo
When imx8_soc_info_driver uses module_platform_driver() to regitser
itself, the caam driver cannot identify the SoC in the machine because
the SoC driver is probed later, so that add return -EPROBE_DEFER.
Signed-off-by: Alice Guo
---
drivers/crypto/caam/ctrl.c | 3 +++
1 file
> -Original Message-
> From: Dominique MARTINET
> Sent: 2021年4月19日 12:49
> To: Alice Guo (OSS)
> Cc: gre...@linuxfoundation.org; raf...@kernel.org; Horia Geanta
> ; Aymen Sghaier ;
> herb...@gondor.apana.org.au; da...@davemloft.net; t...@atomide.com;
> geert+rene...@glider.be;
From: Alice Guo
In patch "soc: imx8m: change to use platform driver", change soc-imx8m.c to use
module platform driver and use NVMEM APIs to ocotp register, the reason is that
directly reading ocotp egister causes kexec kernel hang because kernel will
disable unused clks after kernel boots up.
> -Original Message-
> From: Leon Romanovsky
> Sent: 2021年4月19日 13:02
> To: Alice Guo (OSS)
> Cc: gre...@linuxfoundation.org; raf...@kernel.org; Horia Geanta
> ; Aymen Sghaier ;
> herb...@gondor.apana.org.au; da...@davemloft.net; t...@atomide.com;
> geert+rene...@glider.be;
Alice Guo (OSS) wrote on Mon, Apr 19, 2021 at 12:27:22PM +0800:
> From: Alice Guo
>
> Update all the code that use soc_device_match
A single patch might be difficult to accept for all components, a each
maintainer will probably want to have a say on their subsystem?
I would suggest to split
Hi Bingbu,
On 4/19/21 12:57 PM, Bingbu Cao wrote:
Intel IPU(Image Processing Unit) has its own (IO)MMU hardware,
The IPU driver allocates its own page table that is not mapped
via the DMA, and thus the Intel IOMMU driver blocks access giving
this error:
DMAR: DRHD: handling fault status reg 3
From: Alice Guo
Update all the code that use soc_device_match because add support for
soc_device_match returning -EPROBE_DEFER.
Signed-off-by: Alice Guo
---
drivers/bus/ti-sysc.c | 2 +-
drivers/clk/renesas/r8a7795-cpg-mssr.c| 4 +++-
Hi Alice,
CC Arnd (soc_device_match() author)
On Mon, Apr 19, 2021 at 6:28 AM Alice Guo (OSS) wrote:
> From: Alice Guo
>
> In i.MX8M boards, the registration of SoC device is later than caam
> driver which needs it. Caam driver needs soc_device_match to provide
> -EPROBE_DEFER when no SoC
On 19/04/2021 08:13, chenxiang wrote:
From: Xiang Chen
It is not necessary to put free_iova_mem() inside of spinlock/unlock
iova_rbtree_lock which only leads to more completion for the spinlock.
It has a small promote on the performance after the change. And also
rename private_free_iova() as
Hi Dominique,
CC Arnd (soc_device_match() author)
On Mon, Apr 19, 2021 at 7:03 AM Dominique MARTINET
wrote:
> Alice Guo (OSS) wrote on Mon, Apr 19, 2021 at 12:27:22PM +0800:
> > From: Alice Guo
> > Update all the code that use soc_device_match
>
> A single patch might be difficult to accept
Hi Baolu,
On 2021/4/14 15:14, Lu Baolu wrote:
> On 4/13/21 4:54 PM, Keqian Zhu wrote:
>> Block(largepage) mapping is not a proper granule for dirty log tracking.
>> Take an extreme example, if DMA writes one byte, under 1G mapping, the
>> dirty amount reported is 1G, but under 4K mapping, the
Geert Uytterhoeven wrote on Mon, Apr 19, 2021 at 11:03:24AM +0200:
> > This is going to need quite some more work to be acceptable, in my
> > opinion, but I think it should be possible.
>
> In general, this is very hard to do, IMHO. Some drivers may be used on
> multiple platforms, some of them
Hi Keqian,
On 2021/4/19 17:32, Keqian Zhu wrote:
+EXPORT_SYMBOL_GPL(iommu_split_block);
Do you really have any consumers of this interface other than the dirty
bit tracking? If not, I don't suggest to make this as a generic IOMMU
interface.
There is an implicit requirement for such
On 4/18/21 9:27 PM, Alice Guo (OSS) wrote:
> From: Alice Guo
>
> Update all the code that use soc_device_match because add support for
> soc_device_match returning -EPROBE_DEFER.
>
> Signed-off-by: Alice Guo
> ---
[ ... ]
> drivers/watchdog/renesas_wdt.c| 2 +-
> 48 files
On Fri 26 Feb 03:55 CST 2021, Sai Prakash Ranjan wrote:
> Adreno(GPU) SMMU and APSS(Application Processor SubSystem) SMMU
> both implement "arm,mmu-500" in some QTI SoCs and to run through
> adreno smmu specific implementation such as enabling split pagetables
> support, we need to match the
On Mon, Apr 19, 2021 at 11:33 AM Dominique MARTINET
wrote:
> Geert Uytterhoeven wrote on Mon, Apr 19, 2021 at 11:03:24AM +0200:
>
> > soc_device_match() should only be used as a last resort, to identify
> > systems that cannot be identified otherwise. Typically this is used for
> > quirks, which
On Fri, Apr 09, 2021 at 09:38:15PM +0200, Arnd Bergmann wrote:
> On Fri, Apr 9, 2021 at 6:56 PM Sven Peter wrote:
> > On Wed, Apr 7, 2021, at 12:44, Will Deacon wrote:
> > > On Sun, Mar 28, 2021 at 09:40:07AM +0200, Sven Peter wrote:
> > >
> > > > + cfg->pgsize_bitmap &= SZ_16K;
> > > > + if
On Sun, 11 Apr 2021, Joe Perches wrote:
> > v2: avoid pr_info(""), change pci_info() to pr_info() for a nicer
> > solution
> >
> > drivers/iommu/amd/init.c | 4 ++--
> > 1 file changed, 2 insertions(+), 2 deletions(-)
> >
> > diff --git a/drivers/iommu/amd/init.c b/drivers/iommu/amd/init.c
> >
On Mon, 2021-04-19 at 22:23 +0300, Alexander Monakov wrote:
> On Sun, 11 Apr 2021, Joe Perches wrote:
>
> > > v2: avoid pr_info(""), change pci_info() to pr_info() for a nicer
> > > solution
> > >
> > > drivers/iommu/amd/init.c | 4 ++--
> > > 1 file changed, 2 insertions(+), 2 deletions(-)
> >
Arnd Bergmann wrote on Mon, Apr 19, 2021 at 02:16:36PM +0200:
> In some cases, you can use the device_link infrastructure to deal
> with dependencies between devices. Not sure if this would help
> in your case, but have a look at device_link_add() etc in drivers/base/core.c
I'll need to actually
Hi Baolu,
On 2021/4/19 21:33, Lu Baolu wrote:
> Hi Keqian,
>
> On 2021/4/19 17:32, Keqian Zhu wrote:
+EXPORT_SYMBOL_GPL(iommu_split_block);
>>> Do you really have any consumers of this interface other than the dirty
>>> bit tracking? If not, I don't suggest to make this as a generic IOMMU
Intel IPU(Image Processing Unit) has its own (IO)MMU hardware,
The IPU driver allocates its own page table that is not mapped
via the DMA, and thus the Intel IOMMU driver blocks access giving
this error:
DMAR: DRHD: handling fault status reg 3
DMAR: [DMA Read] Request device [00:05.0] PASID
The current flag name "untrusted" is not correct as it is populated
using the firmware property "external-facing" for the parent ports. In
other words, the firmware only says which ports are external facing, so
the field really identifies the devices as external (vs internal).
Only field
Hi Keqian,
On 4/20/21 9:25 AM, Keqian Zhu wrote:
Hi Baolu,
On 2021/4/19 21:33, Lu Baolu wrote:
Hi Keqian,
On 2021/4/19 17:32, Keqian Zhu wrote:
+EXPORT_SYMBOL_GPL(iommu_split_block);
Do you really have any consumers of this interface other than the dirty
bit tracking? If not, I don't
Hi Isaac,
在 2021/4/9 1:13, Isaac J. Manjarres 写道:
Implement the map_pages() callback for the ARM LPAE io-pgtable
format.
Signed-off-by: Isaac J. Manjarres
---
drivers/iommu/io-pgtable-arm.c | 42 ++
1 file changed, 32 insertions(+), 10 deletions(-)
diff
31 matches
Mail list logo
