On 1/17/2020 5:08 PM, Joerg Roedel wrote:
Adding Suravee, who wrote the IOMMU Perf Counter code.
On Tue, Jan 14, 2020 at 08:12:20AM -0700, Shuah Khan wrote:
init_iommu_perf_ctr() clobbers the register when it checks write access
to IOMMU perf counters and fails to restore when they are
Good catch. Thanks Baolu.
Will do v5 fixing this and Christoph's nit
On Tue, 2020-01-21 at 09:06 +0800, Lu Baolu wrote:
> Hi,
>
> On 1/18/20 12:27 AM, Jon Derrick wrote:
> > The PCI device may have a DMA requester on another bus, such as VMD
> > subdevices needing to use the VMD endpoint. This
Hi,
On 1/18/20 12:27 AM, Jon Derrick wrote:
The PCI device may have a DMA requester on another bus, such as VMD
subdevices needing to use the VMD endpoint. This case requires the real
DMA device when mapping to IOMMU.
Signed-off-by: Jon Derrick
---
drivers/iommu/intel-iommu.c | 9 +
Hi John,
On 1/20/20 5:44 PM, John Garry wrote:
On 01/01/2020 05:26, Lu Baolu wrote:
An IOMMU group represents the smallest set of devices that are considered
to be isolated. All devices belonging to an IOMMU group share a default
domain for DMA APIs. There are two types of default domain:
On Tue, Dec 17, 2019 at 8:40 PM Cong Wang wrote:
>
> This patchset contains three small optimizations for the global spinlock
> contention in IOVA cache. Our memcache perf test shows this reduced its
> p999 latency down by 45% on AMD when IOMMU is enabled.
>
> (Resending v3 on Joerg's request.)
On Sun, Jan 19, 2020 at 11:25:23PM +0100, Christoph Hellwig wrote:
> This series looks good to me (modulo the one minor nitpick which isn't
> all that important):
>
> Reviewed-by: Christoph Hellwig
Hi Bjorn,
are you picking this up ? I can merge it too but since it is mostly
x86 changes I
On Fri, Jan 17, 2020 at 09:27:28AM -0700, Jon Derrick wrote:
> Devices on the VMD domain use the VMD endpoint's requester ID and have
> been relying on the VMD endpoint's DMA operations. The problem with this
> was that VMD domain devices would use the VMD endpoint's attributes when
> doing DMA
On 01/01/2020 05:26, Lu Baolu wrote:
An IOMMU group represents the smallest set of devices that are considered
to be isolated. All devices belonging to an IOMMU group share a default
domain for DMA APIs. There are two types of default domain: IOMMU_DOMAIN_DMA
and IOMMU_DOMAIN_IDENTITY. The
