Hi Santosh,
On 9/16/24 10:31, 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 ea9cdbcf3a0b8d5497cddf87990f1b39d8f3bb0a 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.
Tested on EPYC Genoa launching a guest with 380 vCPUs, with VFIO passthrough NIC, using "-device amd-iommu,intremap=on,xtsup=on,pt=on" I pointed out a few minor nits, of which I think the most important is to correct the error message on PATCH 5/5. With that addressed: Reviewed-by: Alejandro Jimenez <alejandro.j.jime...@oracle.com> Thank you.
Change History: V2: - Fixed non-kvm build issue (Reported by Michael Tsirkin) V1: - https://lore.kernel.org/all/20240904100257.184851-3-santosh.shu...@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 invaldate 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(-)
