When a PCI device has DMA quirks, we need to ensure that an upstream
IOMMU knows about all possible aliases, since the presence of a DMA
quirk does not preclude the device still also emitting transactions
(e.g. MSIs) on its 'real' RID. Similarly, the rules for bridge aliasing
are relatively complex
Hi Will,
On 5/31/17 5:44 AM, Will Deacon wrote:
> On Tue, May 30, 2017 at 11:13:36PM -0700, Ray Jui wrote:
>> I did a little more digging myself and I think I now understand what you
>> meant by identity mapping, i.e., configuring the MMU-500 with 1:1 mapping
>> between the DMA address and the IOV
On Wed, May 24, 2017 at 07:01:38PM +0100, Jean-Philippe Brucker wrote:
> Address Translation Service (ATS) is an extension to PCIe allowing
> endpoints to manage their own IOTLB, called Address Translation Cache
> (ATC). Instead of having every memory transaction processed by the IOMMU,
> the endpo
On Tue, May 30, 2017 at 11:58:50AM +0100, Jean-Philippe Brucker wrote:
> On 30/05/17 11:01, Joerg Roedel wrote:
> > On Wed, May 24, 2017 at 07:01:38PM +0100, Jean-Philippe Brucker wrote:
> >> +- ats-supported: if present, the root complex supports the Address
> >> + Translation Service (ATS). It i
On Wed, May 31, 2017 at 4:12 AM, Bjorn Helgaas wrote:
> On Mon, May 22, 2017 at 11:39 AM, Oza Pawandeep wrote:
>> This patch adds support for inbound memory window
>> for PCI RC drivers.
>>
>> It defines new function pci_create_root_bus2 which
>> takes inbound resources as an argument and fills i
On Wed, May 31, 2017 at 11:03:52PM +0800, Xunlei Pang wrote:
> For kdump case, it will be put in some reserved crash memory allocated
> by kexec-tools, and passed the corresponding start address of the
> allocated reserved crash memory to kdump kernel via "elfcorehdr=",
> please see kernel function
Hi Jean-Philippe,
On 5/24/2017 2:01 PM, Jean-Philippe Brucker wrote:
PCIe devices can implement their own TLB, named Address Translation Cache
(ATC). In order to support Address Translation Service (ATS), the
following changes are needed in software:
* Enable ATS on endpoints when the system su
On 05/31/2017 at 01:46 AM, Tom Lendacky wrote:
> On 5/25/2017 11:17 PM, Xunlei Pang wrote:
>> On 04/19/2017 at 05:21 AM, Tom Lendacky wrote:
>>> Provide support so that kexec can be used to boot a kernel when SME is
>>> enabled.
>>>
>>> Support is needed to allocate pages for kexec without encrypti
This provides a helper function to find and retrieve the ITS
base address from the ID mappings array reference of a device
IORT node(if any).
This is used in the subsequent patch to retrieve the ITS base
address associated with a pci dev IORT node.
Signed-off-by: shameer
---
drivers/acpi/arm64
The HiSilicon erratum 161010801 describes the limitation of HiSilicon
platforms Hip06/Hip07 to support the SMMU mappings for MSI transactions.
On these platforms GICv3 ITS translator is presented with the deviceID
by extending the MSI payload data to 64 bits to include the deviceID.
Hence, the PCI
On certain HiSilicon platforms (Hip06/Hip07) the GIC ITS and
PCIe RC deviates from the standard implementation and this breaks
PCIe MSI functionality when SMMU is enabled.
The HiSilicon erratum 161010801 describes this limitation of certain
HiSilicon platforms to support the SMMU mappings for MSI
On Wed, May 31, 2017 at 08:37:50AM -0500, Tom Lendacky wrote:
> I like keeping the command line option and the values together. It may
> not look the greatest but I like it more than defining the command line
> option in head_64.S and passing it in as an argument.
>
> OTOH, I don't think the rip-r
Hi Jean-Philippe,
On 2/27/2017 2:54 PM, Jean-Philippe Brucker wrote:
> Enable PASID for PCI devices that support it.
>
> Signed-off-by: Jean-Philippe Brucker
> ---
> drivers/iommu/arm-smmu-v3.c | 66
> ++---
> 1 file changed, 63 insertions(+), 3 deletion
On 5/31/2017 3:49 AM, Borislav Petkov wrote:
On Tue, May 30, 2017 at 10:37:03AM -0500, Tom Lendacky wrote:
I can define the command line option and the "on" and "off" values as
character buffers in the function and initialize them on a per character
basis (using a static string causes the same i
On 5/31/2017 4:51 AM, Borislav Petkov wrote:
On Tue, May 30, 2017 at 11:39:07AM -0500, Tom Lendacky wrote:
Yes, it's from objtool:
arch/x86/mm/mem_encrypt_boot.o: warning: objtool: .text+0xd2: return
instruction outside of a callable function
Oh, well, let's make it a global symbol then. Who
On Tue, May 30, 2017 at 11:13:36PM -0700, Ray Jui wrote:
> I did a little more digging myself and I think I now understand what you
> meant by identity mapping, i.e., configuring the MMU-500 with 1:1 mapping
> between the DMA address and the IOVA address.
>
> I think that should work. In the end,
On 30/05/17 10:12, Joerg Roedel wrote:
> On Mon, May 22, 2017 at 04:06:37PM +0100, Robin Murphy wrote:
>> IORT revision C has been published with a number of new SMMU
>> implementation identifiers. Since IORT doesn't have any way of falling
>> back to a more generic model code, we really need Linux
On Tue, May 30, 2017 at 11:46:52AM -0500, Tom Lendacky wrote:
> Check if you have CONFIG_DEBUG_SECTION_MISMATCH=y
$ grep MISM .config
CONFIG_DEBUG_SECTION_MISMATCH=y
CONFIG_SECTION_MISMATCH_WARN_ONLY=y
Still no joy.
Can you give me your .config?
--
Regards/Gruss,
Boris.
Good mailing pract
On Tue, May 30, 2017 at 12:46:14PM -0500, Tom Lendacky wrote:
> This is an area that I'm not familiar with, so I don't completely
> understand the flow in regards to where/when/how the ELF headers are
> copied and what needs to be done.
So my suggestion is still to put kexec/kdump on the backburne
On Tue, May 30, 2017 at 11:39:07AM -0500, Tom Lendacky wrote:
> Yes, it's from objtool:
>
> arch/x86/mm/mem_encrypt_boot.o: warning: objtool: .text+0xd2: return
> instruction outside of a callable function
Oh, well, let's make it a global symbol then. Who knows, we might have
to live-patch it som
On Tue, May 30, 2017 at 10:48:27AM -0500, Tom Lendacky wrote:
> I'll look at doing that instead of removing the support for the whole
> file.
Right, so I don't think the stack protector is even ready that early -
we do set it up later:
/* Set up %gs.
*
* The base of %gs
On Tue, May 30, 2017 at 10:37:03AM -0500, Tom Lendacky wrote:
> I can define the command line option and the "on" and "off" values as
> character buffers in the function and initialize them on a per character
> basis (using a static string causes the same issues as referencing a
> string constant),
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