On Wed, Oct 23, 2019 at 11:53:41AM +, Laurentiu Tudor wrote:
> We had an internal discussion over these points you are raising and
> Madalin (cc-ed) came up with another idea: instead of adding this prone
> to misuse api how about experimenting with a new dma unmap and dma sync
> variants
On Tue, 22 Oct 2019 21:04:00 -0700
Jacob Pan wrote:
> > > + if (cap_caching_mode(iommu->cap) &&
> > > sm_supported(iommu)) {
> >
> > do you need to check against cap_caching_mode() or ecap_vcmd?
> >
> I guess ecap_vcmd() will suffice. Kind of redundant.
Actually, we can check
On Wed, 23 Oct 2019 10:21:51 +0800
Lu Baolu wrote:
> >> +#ifdef CONFIG_INTEL_IOMMU_SVM
> >
> > Maybe move them to intel-svm.c instead? that's where the bulk
> > of the svm support is?
>
> I think this is a generic PASID allocator for guest IOMMU although
> vSVA is currently the only
On Wed, 23 Oct 2019 10:55:23 -0700
Jacob Pan wrote:
> > > Do you have to check this everytime? every dmar_readq is going to
> > > trap to the other side ...
> >
> > Yes. We don't need to check it every time. Check once and save the
> > result during boot is enough.
> >
> > How about below
On Wed, 23 Oct 2019 09:53:04 +0800
Lu Baolu wrote:
> Hi Ashok,
>
> Thanks for reviewing the patch.
>
> On 10/23/19 8:45 AM, Raj, Ashok wrote:
> > On Tue, Oct 22, 2019 at 04:53:14PM -0700, Jacob Pan wrote:
> >> From: Lu Baolu
> >>
> >> If Intel IOMMU runs in caching mode, a.k.a. virtual
On Wed, Oct 16, 2019 at 11:33:08AM +0800, Yong Wu wrote:
> Use the iommu_gather mechanism to achieve the tlb range flush.
> Gather the iova range in the "tlb_add_page", then flush the merged iova
> range in iotlb_sync.
>
> Suggested-by: Tomasz Figa
> Signed-off-by: Yong Wu
> ---
>
>>https://git.kernel.org/pub/scm/linux/kernel/git/will/linux.git/log/?h=for-joerg/arm-smmu/updates
Thanks Will! Let me rebase my patches on top of this branch and send it out.
-KR
___
iommu mailing list
iommu@lists.linux-foundation.org
On Wed, Oct 16, 2019 at 11:33:07AM +0800, Yong Wu wrote:
> The commit 4d689b619445 ("iommu/io-pgtable-arm-v7s: Convert to IOMMU API
> TLB sync") help move the tlb_sync of unmap from v7s into the iommu
> framework. It helps add a new function "mtk_iommu_iotlb_sync", But it
> lacked the lock, then
On Tue, Oct 22, 2019 at 11:48:55PM +, Krishna Reddy wrote:
> >>Apologies for crossed wires, but I had a series getting rid of
> >>arm_smmu_flush_ops which was also meant to end up making things a bit
> >>easier for you:
>
> I was looking to rebase on top of your changes first. Then I read
On Wed, Oct 23, 2019 at 4:01 PM YueHaibing wrote:
> platform_get_irq() will call dev_err() itself on failure,
> so there is no need for the driver to also do this.
> This is detected by coccinelle.
>
> Signed-off-by: YueHaibing
Reviewed-by: Geert Uytterhoeven
Gr{oetje,eeting}s,
platform_get_irq() will call dev_err() itself on failure,
so there is no need for the driver to also do this.
This is detected by coccinelle.
Signed-off-by: YueHaibing
---
drivers/iommu/ipmmu-vmsa.c | 4 +---
1 file changed, 1 insertion(+), 3 deletions(-)
diff --git
On Tue, 22 Oct 2019 17:27:51 -0700
"Raj, Ashok" wrote:
> Hi Jacob
>
> On Tue, Oct 22, 2019 at 04:53:13PM -0700, Jacob Pan wrote:
> > Shared virtual address (SVA), a.k.a, Shared virtual memory (SVM) on
> > Intel platforms allow address space sharing between device DMA and
> > applications. SVA
Hi Robin,
On 22.10.2019 16:25, Robin Murphy wrote:
> On 22/10/2019 13:55, Laurentiu Tudor wrote:
>> From: Laurentiu Tudor
>>
>> Introduce a new dma map op called dma_addr_to_phys_addr() that converts
>> a dma address to the physical address backing it up and add wrapper for
>> it.
>
> I'd
> + select DMA_CMA
Thіs needs to be
select DMA_CMA if HAVE_DMA_CONTIGUOUS
> +#include
> + /* Allocate from CMA */
> + // request_pages = (request_size >> PAGE_SHIFT) + 1;
> + request_pages = (round_up(request_size, PAGE_SIZE) >> PAGE_SHIFT);
> + page =
14 matches
Mail list logo
