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ptdev: change remapping entry from virtual to physical based

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currently, pass-thru devices are managed by per-vm's remapping entries
which is virtual based:
- MSI entry is identified by virt_bdf+msix_index
- INTx entry is identified by virt_pin+vpin_src
it works but it's not a good design for physical resource management, for
example a physical IOAPIC pin could belong to different vm's INTx entries,
the Device Model then must make sure there is no resource conflict from
application's level.

This patch change the design from virtual to physical based:
- MSI entry is identified by phys_bdf+msix_index
- INTx entry is identified by phys_pin
The physical resource is directly managed in hypervisor, a miss adding
entry will be found by hypervisor and return error message with failure.

Signed-off-by: Jason Chen CJ <jason.cj.chen@intel.com>
Acked-by: Xu, Anthony <anthony.xu@intel.com>
This commit is contained in:
Jason Chen CJ
2018-03-26 05:00:14 +08:00
committed by Jack Ren
parent a39509a8fe
commit c0d4b90415
5 changed files with 344 additions and 147 deletions
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4
hypervisor/common/hypercall.c
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@@ -618,12 +618,12 @@ int64_t hcall_set_ptdev_intr_info(struct vm *vm, uint64_t vmid, uint64_t param)
}
if (irq.type == IRQ_INTX)
ptdev_add_intx_remapping(target_vm,
ret = ptdev_add_intx_remapping(target_vm,
irq.virt_bdf, irq.phys_bdf,
irq.is.intx.virt_pin, irq.is.intx.phys_pin,
irq.is.intx.pic_pin);
else if (irq.type == IRQ_MSI || irq.type == IRQ_MSIX)
ptdev_add_msix_remapping(target_vm,
ret = ptdev_add_msix_remapping(target_vm,
irq.virt_bdf, irq.phys_bdf,
irq.is.msix.vector_cnt);