Attachment 219488 Details for Bug 250802 – debugging #2

[patch] debugging #2

1.patch (text/plain), 1.34 KB, created by Konstantin Belousov on 2020-11-09 12:16:02 UTC

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Creator: Konstantin Belousov

Created: 2020-11-09 12:16:02 UTC

Size: 1.34 KB

patch

obsolete

>diff --git a/sys/amd64/vmm/io/ppt.c b/sys/amd64/vmm/io/ppt.c
>index 547a14e6464..53c28763d0c 100644
>--- a/sys/amd64/vmm/io/ppt.c
>+++ b/sys/amd64/vmm/io/ppt.c
>@@ -452,8 +452,11 @@ ppt_map_mmio(struct vm *vm, int bus, int slot, int func,
> 	struct pptseg *seg;
> 	struct pptdev *ppt;
> 
>+bool mine = gpa == 0xd0000000;
>+if (mine) printf("ppt_map_mmio: pci0:%d:%d:%d\n", bus, slot, func);
> 	ppt = ppt_find(bus, slot, func);
> 	if (ppt != NULL) {
>+ if (ppt->vm != vm && mine) printf("ppt_map_mmio: EBUSY\n");
> 		if (ppt->vm != vm)
> 			return (EBUSY);
> 
>@@ -465,11 +468,14 @@ ppt_map_mmio(struct vm *vm, int bus, int slot, int func,
> 					seg->gpa = gpa;
> 					seg->len = len;
> 				}
>+if (mine) printf("ppt_map_mmio: vm_map_mmio %d\n", error);
> 				return (error);
> 			}
> 		}
>+if (mine) printf("ppt_map_mmio: ENOSPC\n");
> 		return (ENOSPC);
> 	}
>+if (mine) printf("ppt_map_mmio: ENOENT\n");
> 	return (ENOENT);
> }
> 
>diff --git a/sys/amd64/vmm/vmm.c b/sys/amd64/vmm/vmm.c
>index 3a1d0d54bca..1e715d458a9 100644
>--- a/sys/amd64/vmm/vmm.c
>+++ b/sys/amd64/vmm/vmm.c
>@@ -650,6 +650,7 @@ vm_mem_allocated(struct vm *vm, int vcpuid, vm_paddr_t gpa)
> 			return (true);		/* 'gpa' is sysmem or devmem */
> 	}
> 
>+if (gpa >= 0xd0000000 && gpa < 0xe0000000) printf("ppt_is_mmio %#lx %d\n", gpa, ppt_is_mmio(vm, gpa));
> 	if (ppt_is_mmio(vm, gpa))
> 		return (true);			/* 'gpa' is pci passthru mmio */
>

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Attachments on bug 250802: 219488 | 219490 | 219501