Re: [PATCH, v2] physmem: avoid bounce buffer too small

[Peter Maydell]

On Thu, 29 Feb 2024 at 11:17, Heinrich Schuchardt
<heinrich.schuchardt@canonical.com> wrote:
> > But yes, I'm not surprised that CXL runs into this. Heinrich,
> > are you doing CXL testing, or is this some other workload?
>
> I am running the UEFI Self-Certification Tests (SCT) on EDK 2 using:
>
> qemu-system-riscv64 \
>        -M virt,acpi=off -accel tcg -m 4096 \
>        -serial mon:stdio \
>        -device virtio-gpu-pci \
>        -device qemu-xhci \
>        -device usb-kbd \
>        -drive
> if=pflash,format=raw,unit=0,file=RISCV_VIRT_CODE.fd,readonly=on \
>        -drive if=pflash,format=raw,unit=1,file=RISCV_VIRT_VARS.fd \
>        -drive file=sct.img,format=raw,if=virtio \
>        -device virtio-net-device,netdev=net0 \
>        -netdev user,id=net0
>
> This does not invoke any CXL related stuff.

Hmm, that doesn't seem like it ought to be running into this.
What underlying memory region is the guest trying to do
the virtio queue access to?

-- PMM