From: Guenter Roeck <linux@roeck-us.net>
To: "Michael S. Tsirkin" <mst@redhat.com>
Cc: Igor Mammedov <imammedo@redhat.com>,
Jiahui Cen <cenjiahui@huawei.com>,
philmd@redhat.com, qemu-devel@nongnu.org
Subject: Re: aarch64 efi boot failures with qemu 6.0+
Date: Sun, 25 Jul 2021 15:56:17 -0700 [thread overview]
Message-ID: <14aff6ab-0b96-fe22-bc35-18d2e8528a5b@roeck-us.net> (raw)
In-Reply-To: <20210725181334-mutt-send-email-mst@kernel.org>
On 7/25/21 3:14 PM, Michael S. Tsirkin wrote:
> On Sat, Jul 24, 2021 at 11:52:34AM -0700, Guenter Roeck wrote:
>> Hi all,
>>
>> starting with qemu v6.0, some of my aarch64 efi boot tests no longer
>> work. Analysis shows that PCI devices with IO ports do not instantiate
>> in qemu v6.0 (or v6.1-rc0) when booting through efi. The problem affects
>> (at least) ne2k_pci, tulip, dc390, and am53c974. The problem only affects
>> aarch64, not x86/x86_64.
>>
>> I bisected the problem to commit 0cf8882fd0 ("acpi/gpex: Inform os to
>> keep firmware resource map"). Since this commit, PCI device BAR
>> allocation has changed. Taking tulip as example, the kernel reports
>> the following PCI bar assignments when running qemu v5.2.
>>
>> [ 3.921801] pci 0000:00:01.0: [1011:0019] type 00 class 0x020000
>> [ 3.922207] pci 0000:00:01.0: reg 0x10: [io 0x0000-0x007f]
>> [ 3.922505] pci 0000:00:01.0: reg 0x14: [mem 0x10000000-0x1000007f]
>> [ 3.927111] pci 0000:00:01.0: BAR 0: assigned [io 0x1000-0x107f]
>> [ 3.927455] pci 0000:00:01.0: BAR 1: assigned [mem 0x10000000-0x1000007f]
>>
>> With qemu v6.0, the assignment is reported as follows.
>>
>> [ 3.922887] pci 0000:00:01.0: [1011:0019] type 00 class 0x020000
>> [ 3.923278] pci 0000:00:01.0: reg 0x10: [io 0x0000-0x007f]
>> [ 3.923451] pci 0000:00:01.0: reg 0x14: [mem 0x10000000-0x1000007f]
>>
>> and the controller does not instantiate. The problem disapears after
>> reverting commit 0cf8882fd0.
>>
>> Attached is a summary of test runs with various devices and qemu v5.2
>> as well as qemu v6.0, and the command line I use for efi boots.
>>
>> Did commit 0cf8882fd0 introduce a bug, do I now need need some different
>> command line to instantiate PCI devices with io ports, or are such devices
>> simply no longer supported if the system is booted with efi support ?
>>
>> Thanks,
>> Guenter
>
>
> So that commit basically just says don't ignore what efi did.
>
> The issue's thus likely efi.
>
I don't see the problem with efi boots on x86 and x86_64.
Any idea why that might be the case ?
Thanks,
Guenter
> Cc the maintainer. Philippe can you comment pls?
>
>> ---
>> Command line (tulip network interface):
>>
>> CMDLINE="root=/dev/vda console=ttyAMA0"
>> ROOTFS="rootfs.ext2"
>>
>> qemu-system-aarch64 -M virt -kernel arch/arm64/boot/Image -no-reboot \
>> -m 512 -cpu cortex-a57 -no-reboot \
>> -device tulip,netdev=net0 -netdev user,id=net0 \
>> -bios QEMU_EFI-aarch64.fd \
>> -snapshot \
>> -device virtio-blk-device,drive=d0 \
>> -drive file=${ROOTFS},if=none,id=d0,format=raw \
>> -nographic -serial stdio -monitor none \
>> --append "${CMDLINE}"
>>
>> ---
>> Boot tests with various devices known to work in qemu v5.2.
>>
>> v5.2 v6.0 v6.0
>> efi non-efi efi
>> e1000 pass pass pass
>> e1000-82544gc pass pass pass
>> e1000-82545em pass pass pass
>> e1000e pass pass pass
>> i82550 pass pass pass
>> i82557a pass pass pass
>> i82557b pass pass pass
>> i82557c pass pass pass
>> i82558a pass pass pass
>> i82559b pass pass pass
>> i82559c pass pass pass
>> i82559er pass pass pass
>> i82562 pass pass pass
>> i82801 pass pass pass
>> ne2k_pci pass pass fail <--
>> pcnet pass pass pass
>> rtl8139 pass pass pass
>> tulip pass pass fail <--
>> usb-net pass pass pass
>> virtio-net-device
>> pass pass pass
>> virtio-net-pci pass pass pass
>> virtio-net-pci-non-transitional
>> pass pass pass
>>
>> usb-xhci pass pass pass
>> usb-ehci pass pass pass
>> usb-ohci pass pass pass
>> usb-uas-xhci pass pass pass
>> virtio pass pass pass
>> virtio-blk-pci pass pass pass
>> virtio-blk-device
>> pass pass pass
>> nvme pass pass pass
>> sdhci pass pass pass
>> dc390 pass pass fail <--
>> am53c974 pass pass fail <--
>> lsi53c895ai pass pass pass
>> mptsas1068 pass pass pass
>> lsi53c810 pass pass pass
>> megasas pass pass pass
>> megasas-gen2 pass pass pass
>> virtio-scsi-device
>> pass pass pass
>> virtio-scsi-pci pass pass pass
>
next prev parent reply other threads:[~2021-07-25 22:57 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-07-24 18:52 aarch64 efi boot failures with qemu 6.0+ Guenter Roeck
2021-07-25 22:14 ` Michael S. Tsirkin
2021-07-25 22:56 ` Guenter Roeck [this message]
2021-07-26 9:08 ` Philippe Mathieu-Daudé
2021-07-26 16:00 ` Ard Biesheuvel
2021-07-26 21:16 ` Bjorn Helgaas
2021-07-26 21:31 ` Bjorn Helgaas
2021-07-27 4:22 ` Guenter Roeck
2021-07-27 14:25 ` Bjorn Helgaas
2021-07-27 4:45 ` Michael S. Tsirkin
2021-07-27 5:12 ` Guenter Roeck
2021-07-27 7:04 ` Ard Biesheuvel
2021-07-27 9:02 ` Michael S. Tsirkin
2021-07-27 9:30 ` Michael S. Tsirkin
2021-07-27 9:50 ` Ard Biesheuvel
2021-07-27 10:07 ` Michael S. Tsirkin
2021-07-27 10:14 ` Ard Biesheuvel
2022-03-18 11:48 ` Lorenzo Pieralisi
2021-07-27 11:18 ` Guenter Roeck
2021-07-27 9:01 ` Michael S. Tsirkin
2021-07-27 10:36 ` Igor Mammedov
2021-07-27 11:32 ` Guenter Roeck
2021-07-28 13:11 ` Michael S. Tsirkin
2021-07-28 13:25 ` Ard Biesheuvel
2021-07-28 14:03 ` Guenter Roeck
2021-07-29 8:08 ` Philippe Mathieu-Daudé
2021-07-29 14:42 ` Bjorn Helgaas
2021-07-29 15:59 ` Michael S. Tsirkin
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