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Bug 1967502 - [aarch64] [qemu] Compile the PCIe expander bridge
Summary: [aarch64] [qemu] Compile the PCIe expander bridge
Keywords:
Status: CLOSED CURRENTRELEASE
Alias: None
Product: Red Hat Enterprise Linux 9
Classification: Red Hat
Component: qemu-kvm
Version: 9.0
Hardware: aarch64
OS: Linux
medium
medium
Target Milestone: beta
: 9.0 Beta
Assignee: Eric Auger
QA Contact: Virtualization Bugs
URL:
Whiteboard:
Depends On:
Blocks: 1924294 1967187
TreeView+ depends on / blocked
 
Reported: 2021-06-03 09:17 UTC by Eric Auger
Modified: 2021-12-07 21:24 UTC (History)
10 users (show)

Fixed In Version: qemu-kvm-6.0.0-7.el9
Doc Type: If docs needed, set a value
Doc Text:
Clone Of:
Environment:
Last Closed: 2021-12-07 21:20:54 UTC
Type: Bug
Target Upstream Version:
Embargoed:

Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
Gitlab redhat/centos-stream/src qemu-kvm merge_requests 14 0 None None None 2021-06-24 12:06:50 UTC

Description Eric Auger 2021-06-03 09:17:51 UTC 
On aarch64 we would like the pcie expander bridge to be enabled. So we need to set the CONFIG_PXB config in default-configs/devices/aarch64-rh-devices.mak.
Comment 1 Eric Auger 2021-06-15 12:29:41 UTC 
qemu support was brought upstream by the following series:
https://www.mail-archive.com/qemu-devel@nongnu.org/msg761016.html

This corresponds to the following downstream commits

fe1127da11  unit-test: Add the binary file and clear diff.h (6 months ago) <Yubo Miao>
1da638b165  unit-test: Add testcase for pxb (6 months ago) <Yubo Miao>
128e232281  unit-test: The files changed. (6 months ago) <Yubo Miao>
451b157041  acpi: Align the size to 128k (6 months ago) <Yubo Miao>
6f9765fbad  acpi/gpex: Build tables for pxb (6 months ago) <Yubo Miao>
37d5c0a8ff  acpi: Extract crs build form acpi_build.c (6 months ago) <Yubo Miao>
09fad16744  hw/arm/virt: Write extra pci roots into fw_cfg (6 months ago) <Jiahui Cen>
0abd38885a  fw_cfg: Refactor extra pci roots addition (6 months ago) <Jiahui Cen>
a0e2905b41  acpi/gpex: Extract two APIs from acpi_dsdt_add_pci (6 months ago) <Yubo Miao>
Comment 2 Eric Auger 2021-06-24 11:45:23 UTC 
I tested at QEMU level with the following command add-on:

-device pxb-pcie,bus_nr=4,id=bridge,bus=pcie.0 -device pcie-root-port,bus=bridge,chassis=4,id=pcie.11,io-reserve=0 -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

The NIC worked fine (rhel9 guest).
Comment 9 Eric Auger 2021-07-11 05:28:24 UTC 
Hi Qunfang,

I tested the PCIe expander bridge with qemu-kvm-6.0.0-7.el9 at qemu level and it works for me. Please move the BZ to VERIFIED.

Thanks

Eric
Comment 10 Qunfang Zhang 2021-07-12 00:52:37 UTC 
(In reply to Eric Auger from comment #9)
> Hi Qunfang,
> 
> I tested the PCIe expander bridge with qemu-kvm-6.0.0-7.el9 at qemu level
> and it works for me. Please move the BZ to VERIFIED.
> 
> Thanks
> 
> Eric

Thank you Eric!
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