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hv: mmio_dev: add mmio device pass through support

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Add mmio device pass through support for pre-launched VM.
When we pass through a MMIO device to pre-launched VM, we would remove its
resource from the SOS. Now these resources only include the MMIO regions.

Tracked-On: #5053
Acked-by: Eddie Dong <eddie.dong@intel.com>
Signed-off-by: Li Fei1 <fei1.li@intel.com>
This commit is contained in:
Li Fei1
2020-07-16 17:20:21 +08:00
committed by wenlingz
parent f13d5c25b6
commit acc69007e2
2 changed files with 14 additions and 0 deletions
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9
hypervisor/arch/x86/guest/vm.c
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@@ -32,6 +32,7 @@
#include <pci_dev.h>
#include <vacpi.h>
#include <platform_caps.h>
#include <mmio_dev.h>
vm_sw_loader_t vm_sw_loader;
@@ -257,6 +258,10 @@ static void prepare_prelaunched_vm_memmap(struct acrn_vm *vm, const struct acrn_
remaining_hpa_size = vm_config->memory.size_hpa2;
}
}
for (i = 0U; i < MAX_MMIO_DEV_NUM; i++) {
(void)assign_mmio_dev(vm, &vm_config->mmiodevs[i]);
}
}
/**
@@ -328,6 +333,10 @@ static void prepare_sos_vm_memmap(struct acrn_vm *vm)
if (vm_config->load_order == PRE_LAUNCHED_VM) {
ept_del_mr(vm, pml4_page, vm_config->memory.start_hpa, vm_config->memory.size);
}
for (i = 0U; i < MAX_MMIO_DEV_NUM; i++) {
(void)deassign_mmio_dev(vm, &vm_config->mmiodevs[i]);
}
}
/* unmap AP trampoline code for security