From 1bfd63ac3955ac162fba5ffacb289762cc641bb5 Mon Sep 17 00:00:00 2001 From: Laszlo Ersek Date: Wed, 13 Sep 2023 11:08:14 +0200 Subject: [PATCH] OvmfPkg/RiscVVirt/README: explain the "acpi=off" machine property "acpi=off" is arguably unusual with UEFI guest OSes; add a note to explain it. Original explanation by Drew Jones. Cc: Andrei Warkentin Cc: Andrew Jones Cc: Ard Biesheuvel Cc: Gerd Hoffmann Cc: Jiewen Yao Cc: Jordan Justen Cc: Sunil V L Signed-off-by: Laszlo Ersek Reviewed-by: Andrew Jones Reviewed-by: Sunil V L --- OvmfPkg/RiscVVirt/README.md | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/OvmfPkg/RiscVVirt/README.md b/OvmfPkg/RiscVVirt/README.md index 598e4e35ac..0a799bb9cd 100644 --- a/OvmfPkg/RiscVVirt/README.md +++ b/OvmfPkg/RiscVVirt/README.md @@ -70,6 +70,11 @@ Below example shows how to boot openSUSE Tumbleweed E20. -device virtio-blk-device,drive=hd0 \ -drive file=openSUSE-Tumbleweed-RISC-V-E20-efi.riscv64.raw,format=raw,id=hd0 + Note: the `acpi=off` machine property is specified because Linux guest + support for ACPI (that is, the ACPI consumer side) is a work in progress. + Currently, `acpi=off` is recommended unless you are developing ACPI support + yourself. + ## Test with your own OpenSBI binary Using the above QEMU command line, **RISCV_VIRT_CODE.fd** is launched by the OpenSBI binary that is bundled with QEMU. You can build your own OpenSBI binary