Adding Yubo in the loop as Jiahui's address is bouncing.
On 6/21/21 6:22 PM, Eric Auger wrote: > Hi Jiahui, > > I noticed the PCIe expander bridge + PCIe root port does not work with a > 64kB page guest. One hits a kernel BUG at mm/vmalloc.c:96 > (BUG_ON(!pte_none(*pte));)! This happens with an upstream guest. > > I understand this happens on pci_remap_iospace when handling the Io16 > regions below. Wonder if the edk2 code could be the source (I saw you > write both the edk2 and the qemu part [edk2-devel] [PATCH v2 0/4] Add > extra pci roots support for Arm). > > Please could give me a hand? > > Best Regards > > Eric > > > Sample qemu cmd options: > > -device pxb-pcie,bus_nr=4,id=bridge,bus=pcie.0 \ > -device pcie-root-port,bus=bridge,chassis=4,id=pcie.11 \ > -device virtio-net-pci,bus=pcie.11,netdev=nic0,mac=6a:f5:10:b1:3d:d2 > -netdev > tap,id=nic0,script=/home/augere/TEST/SCRIPTS/qemu-ifup,downscript=/home/augere/TEST/SCRIPTS/qemu-ifdown > > > [ 2.867734] ACPI: PCI Root Bridge [PCFE] (domain 0000 [bus fe-ff]) > [ 2.869339] acpi PNP0A08:00: _OSC: OS supports [ExtendedConfig ASPM > ClockPM Segments MSI EDR HPX-Type3] > [ 2.871405] acpi PNP0A08:00: _OSC: platform does not support [LTR DPC] > [ 2.873226] acpi PNP0A08:00: _OSC: OS now controls [PCIeHotplug PME > AER PCIeCapability] > [ 2.875609] acpi PNP0A08:00: ECAM area [mem > 0x401fe00000-0x401fffffff] reserved by PNP0C02:00 > [ 2.877830] acpi PNP0A08:00: ECAM at [mem 0x401fe00000-0x401fffffff] > for [bus fe-ff] > phys_addr=0x3eff3000 > [ 2.884036] ------------[ cut here ]------------ > [ 2.885249] kernel BUG at mm/vmalloc.c:96! > [ 2.886322] Internal error: Oops - BUG: 0 [#1] SMP > [ 2.887560] Modules linked in: > [ 2.888352] CPU: 7 PID: 1 Comm: swapper/0 Not tainted > 5.13.0-rc6-guest-64K+ #57 > [ 2.890216] Hardware name: QEMU KVM Virtual Machine, BIOS 0.0.0 > 02/06/2015 > [ 2.891983] pstate: 80400005 (Nzcv daif +PAN -UAO -TCO BTYPE=--) > [ 2.893519] pc : vmap_range+0x1d8/0x208 > [ 2.894600] lr : vmap_range+0x38/0x208 > [ 2.895615] sp : fffffe0012c2f7f0 > [ 2.896517] x29: fffffe0012c2f7f0 x28: fffffffefe800000 x27: > fffffffefe801000 > [ 2.898437] x26: ffffffff20070000 x25: 00000001407f0000 x24: > 0140000000000000 > [ 2.900357] x23: fffffe001134ffb8 x22: 000000000000003f x21: > 0068000000000717 > [ 2.902284] x20: 000000003eff3000 x19: fffffffefe801000 x18: > 0000000000000010 > [ 2.904236] x17: 0000000000000000 x16: 0000000000000001 x15: > ffffffffffffffff > [ 2.906157] x14: 695f70616d65725f x13: 696370202a2a2a2a x12: > fffffe0011c77150 > [ 2.908084] x11: 0000000000000003 x10: fffffe0011bb7110 x9 : > fffffe0010d33ad4 > [ 2.909996] x8 : 00000000000bffe8 x7 : c0000000ffff7fff x6 : > 0000000000000001 > [ 2.911323] x5 : 0000000000000000 x4 : 000000003eff0000 x3 : > 0000000000001ff7 > [ 2.912631] x2 : 0040000000000001 x1 : fffffc07f4080038 x0 : > fffffc07ffbecdc0 > [ 2.913951] Call trace: > [ 2.914398] vmap_range+0x1d8/0x208 > [ 2.915363] ioremap_page_range+0x20/0x30 > [ 2.916453] pci_remap_iospace+0xcc/0xf0 > [ 2.917519] acpi_pci_probe_root_resources+0x244/0x268 > [ 2.918907] pci_acpi_root_prepare_resources+0x28/0xc8 > [ 2.920281] acpi_pci_root_create+0x9c/0x2f8 > [ 2.921443] pci_acpi_scan_root+0x14c/0x230 > [ 2.922574] acpi_pci_root_add+0x268/0x5c0 > [ 2.923710] acpi_bus_attach+0x15c/0x2c0 > [ 2.924794] acpi_bus_attach+0x9c/0x2c0 > [ 2.925833] acpi_bus_attach+0x9c/0x2c0 > [ 2.926881] acpi_bus_scan+0x64/0x118 > [ 2.927875] acpi_scan_init+0x10c/0x25c > [ 2.928922] acpi_init+0x3e8/0x458 > [ 2.929847] do_one_initcall+0x54/0x268 > [ 2.930879] kernel_init_freeable+0x290/0x344 > [ 2.932068] kernel_init+0x1c/0x128 > [ 2.933017] ret_from_fork+0x10/0x18 > [ 2.934005] Code: a90687e2 97f518e5 a94687e2 17ffffe4 (d4210000) > [ 2.935673] ---[ end trace 1d687ce361e3e7ca ]--- > [ 2.936922] Kernel panic - not syncing: Oops - BUG: Fatal exception > [ 2.938611] SMP: stopping secondary CPUs > [ 2.939760] ---[ end Kernel panic - not syncing: Oops - BUG: Fatal > exception ]--- > > > At EDK2 level I have: > > PciBus: Resource Map for Root Bridge PciRoot(0x0)^M > Type = Io16; Base = 0x0; Length = 0x3000; Alignment = 0xFFF^M > Base = 0x0; Length = 0x200; Alignment = 0xFFF; Owner = PPB > [00|02|02:**]^M > Base = 0x1000; Length = 0x200; Alignment = 0xFFF; Owner = > PPB [00|02|01:**]^M > Base = 0x2000; Length = 0x200; Alignment = 0xFFF; Owner = > PPB [00|02|00:**]^M > Type = Mem32; Base = 0x10000000; Length = 0x700000; > Alignment = 0x1FFFFF^M > Base = 0x10000000; Length = 0x200000; Alignment = 0x1FFFFF; > Owner = PPB [00|02|02:**]^M > Base = 0x10200000; Length = 0x200000; Alignment = 0x1FFFFF; > Owner = PPB [00|02|01:**]^M > Base = 0x10400000; Length = 0x200000; Alignment = 0x1FFFFF; > Owner = PPB [00|02|00:**]^M > Base = 0x10600000; Length = 0x1000; Alignment = 0xFFF; > Owner = PPB [00|02|02:10]^M > Base = 0x10601000; Length = 0x1000; Alignment = 0xFFF; > Owner = PPB [00|02|01:10]^M > Base = 0x10602000; Length = 0x1000; Alignment = 0xFFF; > Owner = PPB [00|02|00:10]^M > Type = Mem64; Base = 0x8000000000; Length = 0x200000; > Alignment = 0xFFFFF^M > Base = 0x8000000000; Length = 0x100000; Alignment = 0xFFFFF; > Owner = PPB [00|02|01:**]; Type = PMem64^M > Base = 0x8000100000; Length = 0x100000; Alignment = 0xFFFFF; > Owner = PPB [00|02|02:**]; Type = PMem64^M > > > PciBus: Resource Map for Root Bridge PciRoot(0x4)^M > Type = Io16; Base = 0x3000; Length = 0x1000; Alignment = 0xFFF^M > Base = 0x3000; Length = 0x200; Alignment = 0xFFF; Owner = > PPB [04|00|00:**]^M > Type = Mem32; Base = 0x10800000; Length = 0x300000; > Alignment = 0x1FFFFF^M > Base = 0x10800000; Length = 0x200000; Alignment = 0x1FFFFF; > Owner = PPB [04|00|00:**]^M > Base = 0x10A00000; Length = 0x1000; Alignment = 0xFFF; > Owner = PPB [04|00|00:10]^M > ^M > PciBus: Resource Map for Bridge [04|00|00]^M > Type = Io16; Base = 0x3000; Length = 0x200; Alignment = 0xFFF^M > Base = Padding; Length = 0x200; Alignment = 0x1FF^M > Type = Mem32; Base = 0x10800000; Length = 0x200000; > Alignment = 0x1FFFFF^M > Base = Padding; Length = 0x200000; Alignment = 0x1FFFFF^M > Type = Mem32; Base = 0x10A00000; Length = 0x1000; > Alignment = 0xFFF^M >
