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authorLaszlo Ersek <lersek@redhat.com>2023-09-13 11:08:14 +0200
committermergify[bot] <37929162+mergify[bot]@users.noreply.github.com>2023-09-14 09:56:20 +0000
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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 <andrei.warkentin@intel.com> Cc: Andrew Jones <ajones@ventanamicro.com> Cc: Ard Biesheuvel <ardb+tianocore@kernel.org> Cc: Gerd Hoffmann <kraxel@redhat.com> Cc: Jiewen Yao <jiewen.yao@intel.com> Cc: Jordan Justen <jordan.l.justen@intel.com> Cc: Sunil V L <sunilvl@ventanamicro.com> Signed-off-by: Laszlo Ersek <lersek@redhat.com> Reviewed-by: Andrew Jones <ajones@ventanamicro.com> Reviewed-by: Sunil V L <sunilvl@ventanamicro.com>
-rw-r--r--OvmfPkg/RiscVVirt/README.md5
1 files changed, 5 insertions, 0 deletions
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