[v3] Interrupt Remap support for emulated amd viommu

[PATCH v3 0/5] Interrupt Remap support for emulated amd viommu

Posted by Santosh Shukla 1 month, 3 weeks ago

Series adds following feature support for emulated amd vIOMMU
1) Pass Through(PT) mode
2) Interrupt Remapping(IR) mode

1) PT mode
Introducing the shared 'nodma' memory region that can be aliased
by all the devices in the PT mode. Shared memory with aliasing
approach will help run VM faster when lot of devices attached to
VM.

2) IR mode
Shared IR memory region with aliasing approach proposed for the
reason mentioned in 1). Also add support to invalidate Interrupt
remaping table(IRT).

Series based on e10cd93872c31332b002c933a798ab0bc51705a4

Testing:
1. nvme/fio testing for VM with > 255 vCPU with xtsup=on and x2apic
enabled
2. Windows Server 2022 VM testing for > 255 vCPU.

Change History:

v3:
- Incorporated Alejandro's v2 nits comment.

V2:
- https://lore.kernel.org/qemu-devel/20240916143116.169693-1-santosh.shukla@amd.com/

V1:
- https://lore.kernel.org/all/20240904100257.184851-3-santosh.shukla@amd.com/T/

Suravee Suthikulpanit (5):
  amd_iommu: Rename variable mmio to mr_mmio
  amd_iommu: Add support for pass though mode
  amd_iommu: Use shared memory region for Interrupt Remapping
  amd_iommu: Send notification when invalidate interrupt entry cache
  amd_iommu: Check APIC ID > 255 for XTSup

 hw/i386/acpi-build.c |  4 +-
 hw/i386/amd_iommu.c  | 98 +++++++++++++++++++++++++++++++++++---------
 hw/i386/amd_iommu.h  |  5 ++-
 3 files changed, 85 insertions(+), 22 deletions(-)

-- 
2.43.5

Re: [PATCH v3 0/5] Interrupt Remap support for emulated amd viommu

Posted by Shukla, Santosh 1 month, 2 weeks ago

Ping?
Gentle reminder.

Thanks,
Santosh

On 9/27/2024 10:59 PM, Santosh Shukla wrote:
> Series adds following feature support for emulated amd vIOMMU
> 1) Pass Through(PT) mode
> 2) Interrupt Remapping(IR) mode
> 
> 1) PT mode
> Introducing the shared 'nodma' memory region that can be aliased
> by all the devices in the PT mode. Shared memory with aliasing
> approach will help run VM faster when lot of devices attached to
> VM.
> 
> 2) IR mode
> Shared IR memory region with aliasing approach proposed for the
> reason mentioned in 1). Also add support to invalidate Interrupt
> remaping table(IRT).
> 
> Series based on e10cd93872c31332b002c933a798ab0bc51705a4
> 
> Testing:
> 1. nvme/fio testing for VM with > 255 vCPU with xtsup=on and x2apic
> enabled
> 2. Windows Server 2022 VM testing for > 255 vCPU.
> 
> Change History:
> 
> v3:
> - Incorporated Alejandro's v2 nits comment.
> 
> V2:
> - https://lore.kernel.org/qemu-devel/20240916143116.169693-1-santosh.shukla@amd.com/
> 
> V1:
> - https://lore.kernel.org/all/20240904100257.184851-3-santosh.shukla@amd.com/T/
> 
> Suravee Suthikulpanit (5):
>   amd_iommu: Rename variable mmio to mr_mmio
>   amd_iommu: Add support for pass though mode
>   amd_iommu: Use shared memory region for Interrupt Remapping
>   amd_iommu: Send notification when invalidate interrupt entry cache
>   amd_iommu: Check APIC ID > 255 for XTSup
> 
>  hw/i386/acpi-build.c |  4 +-
>  hw/i386/amd_iommu.c  | 98 +++++++++++++++++++++++++++++++++++---------
>  hw/i386/amd_iommu.h  |  5 ++-
>  3 files changed, 85 insertions(+), 22 deletions(-)
>

Re: [PATCH v3 0/5] Interrupt Remap support for emulated amd viommu

Posted by Shukla, Santosh 3 weeks, 5 days ago

Hi there,

Ping? Appreciate any further review comment or series is OK to pull, Please let me know.

Thank you!
Santosh

On 10/9/2024 11:35 AM, Shukla, Santosh wrote:
> 
> Ping?
> Gentle reminder.
> 
> Thanks,
> Santosh
> 
> On 9/27/2024 10:59 PM, Santosh Shukla wrote:
>> Series adds following feature support for emulated amd vIOMMU
>> 1) Pass Through(PT) mode
>> 2) Interrupt Remapping(IR) mode
>>
>> 1) PT mode
>> Introducing the shared 'nodma' memory region that can be aliased
>> by all the devices in the PT mode. Shared memory with aliasing
>> approach will help run VM faster when lot of devices attached to
>> VM.
>>
>> 2) IR mode
>> Shared IR memory region with aliasing approach proposed for the
>> reason mentioned in 1). Also add support to invalidate Interrupt
>> remaping table(IRT).
>>
>> Series based on e10cd93872c31332b002c933a798ab0bc51705a4
>>
>> Testing:
>> 1. nvme/fio testing for VM with > 255 vCPU with xtsup=on and x2apic
>> enabled
>> 2. Windows Server 2022 VM testing for > 255 vCPU.
>>
>> Change History:
>>
>> v3:
>> - Incorporated Alejandro's v2 nits comment.
>>
>> V2:
>> - https://lore.kernel.org/qemu-devel/20240916143116.169693-1-santosh.shukla@amd.com/
>>
>> V1:
>> - https://lore.kernel.org/all/20240904100257.184851-3-santosh.shukla@amd.com/T/
>>
>> Suravee Suthikulpanit (5):
>>   amd_iommu: Rename variable mmio to mr_mmio
>>   amd_iommu: Add support for pass though mode
>>   amd_iommu: Use shared memory region for Interrupt Remapping
>>   amd_iommu: Send notification when invalidate interrupt entry cache
>>   amd_iommu: Check APIC ID > 255 for XTSup
>>
>>  hw/i386/acpi-build.c |  4 +-
>>  hw/i386/amd_iommu.c  | 98 +++++++++++++++++++++++++++++++++++---------
>>  hw/i386/amd_iommu.h  |  5 ++-
>>  3 files changed, 85 insertions(+), 22 deletions(-)
>>