On Thu, Dec 22, 2016 at 06:48:01PM -0600, Bjorn Helgaas wrote:
> If we didn't want to use pcibios_resource_to_bus() here for some
> reason, we should at least add a comment about why we think it's OK to
> use a CPU physical address as an IOVA.
Even if there are no such x86 systems out there, I thi
From: Suravee Suthikulpanit
This patch series modifies the existing IOMMU and Perf drivers to support
systems with multiple IOMMUs by allocating an amd_iommu PMU per IOMMU instance.
This allows users to specify performance events and filters separately for each
IOMMU.
This has been tested on the
This patch contains the following minor fixup:
* Fixed overflow handling since u64 delta would lose the MSB sign bit.
* Remove unnecessary local64_set().
* Coding style and make use of GENMASK_ULL macro.
Cc: Peter Zijlstra
Cc: Borislav Petkov
Signed-off-by: Suravee Suthikulpanit
---
arch
Currently, amd_iommu_pc_get_max_[banks|counters]() use end-point
device ID to locate an IOMMU and check the reported max banks/counters.
The logic assumes that the IOMMU_BASE_DEVID belongs to the first IOMMU,
and uses it to acquire a reference to the first IOMMU, which does not work
on certain syst
This patch adds multi-IOMMU support for perf by exposing
an AMD IOMMU PMU for each IOMMU found in the system via:
/sys/device/amd_iommu_x /* where x is the IOMMU index. */
This allows users to specify different events to be programed
onto performance counters of each IOMMU.
Cc: Peter Zijls
This patch introduces amd_iommu_get_num_iommus(). This is intended for
Perf AMD IOMMU driver.
Cc: Joerg Roedel
Signed-off-by: Suravee Suthikulpanit
---
arch/x86/events/amd/iommu.h | 2 ++
drivers/iommu/amd_iommu_init.c | 7 ++-
drivers/iommu/amd_iommu_proto.h | 1 +
3 files changed, 9
This patch declare pr_fmt for perf/amd_iommu and remove unnecessary
pr_debug.
Cc: Peter Zijlstra
Cc: Borislav Petkov
Signed-off-by: Suravee Suthikulpanit
---
arch/x86/events/amd/iommu.c | 12
1 file changed, 4 insertions(+), 8 deletions(-)
diff --git a/arch/x86/events/amd/iommu.c
The current amd_iommu_pc_get_set_reg_val() cannot support multi-IOMMU.
It is also confusing since it is trying to support set and get in
one function.
So, this patch breaks it down to amd_iommu_pc_[get|set]_counter(),
and modifies them to allow callers to specify IOMMU index. This prepares
the dri
This patch cleans up:
* Various bitwise operations in perf_iommu_enable_event
* Make use macros BIT(x)
This should not affect logic and functionality.
Cc: Peter Zijlstra
Cc: Borislav Petkov
Signed-off-by: Suravee Suthikulpanit
---
arch/x86/events/amd/iommu.c | 12 ++--
1 file chan
Hi Eric,
Seeing same issue reported by Diana on ThunderX with you v4.9-reserved-v4
branch.
Vfio passthough work fine when allow_unsafe_interrupts is set.
Thank you,
Geetha.
On Thu, Dec 22, 2016 at 6:32 PM, Auger Eric wrote:
> Hi Diana,
>
> On 22/12/2016 13:41, Diana Madalina Craciun wrote:
>
Hi Geetha,
On 23/12/2016 14:33, Geetha Akula wrote:
> Hi Eric,
>
> Seeing same issue reported by Diana on ThunderX with you
> v4.9-reserved-v4 branch.
> Vfio passthough work fine when allow_unsafe_interrupts is set.
Thank you for testing! I will fix the security assessment by better
studying flag
Hi Joerg,
Ping!
Could you help review this version? Not sure this could catch up to
v4.10 merging.
Thanks
Baoqaun
On 11/25/16 at 01:13pm, Baoquan He wrote:
> This is v7 post.
>
> The principle of the fix is similar to intel iommu. Just defer the assignment
> of device to domain to device drive
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