From: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>
To: "Michael S . Tsirkin" <mst@redhat.com>,
Igor Mammedov <imammedo@redhat.com>
Cc: Sia Jee Heng <jeeheng.sia@starfivetech.com>,
Ani Sinha <anisinha@redhat.com>,
qemu-devel@nongnu.org,
Alistair Francis <alistair.francis@wdc.com>,
Heinrich Schuchardt <heinrich.schuchardt@canonical.com>
Subject: [PATCH] hw/acpi: correct field sequence in SPCR table
Date: Thu, 26 Mar 2026 13:19:47 +0100 [thread overview]
Message-ID: <20260326121947.51200-1-heinrich.schuchardt@canonical.com> (raw)
On LoongArch and RISC-V invalid SPCR tables are created:
Terrminal Type : 00
Language : 03
The correct values are:
Terrminal Type : 03
Language : 00
This is due to commit 7dd0b070fa09 ("hw/arm/virt-acpi-build.c: Migrate
SPCR creation to common location") that swapped the fields.
See the specification of the table in
https://learn.microsoft.com/en-us/windows-hardware/drivers/bringup/serial-port-console-redirection-table
Fixes: 7dd0b070fa09 ("hw/arm/virt-acpi-build.c: Migrate SPCR creation to common location")
Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>
---
hw/acpi/aml-build.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/hw/acpi/aml-build.c b/hw/acpi/aml-build.c
index 4b37405088..a999320e61 100644
--- a/hw/acpi/aml-build.c
+++ b/hw/acpi/aml-build.c
@@ -2115,10 +2115,10 @@ void build_spcr(GArray *table_data, BIOSLinker *linker,
build_append_int_noprefix(table_data, f->stop_bits, 1);
/* Flow Control */
build_append_int_noprefix(table_data, f->flow_control, 1);
- /* Language */
- build_append_int_noprefix(table_data, f->language, 1);
/* Terminal Type */
build_append_int_noprefix(table_data, f->terminal_type, 1);
+ /* Language */
+ build_append_int_noprefix(table_data, f->language, 1);
/* PCI Device ID */
build_append_int_noprefix(table_data, f->pci_device_id, 2);
/* PCI Vendor ID */
--
2.53.0
next reply other threads:[~2026-03-26 12:20 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-03-26 12:19 Heinrich Schuchardt [this message]
2026-03-26 13:41 ` [PATCH] hw/acpi: correct field sequence in SPCR table Michael S. Tsirkin
2026-03-26 14:40 ` Heinrich Schuchardt
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20260326121947.51200-1-heinrich.schuchardt@canonical.com \
--to=heinrich.schuchardt@canonical.com \
--cc=alistair.francis@wdc.com \
--cc=anisinha@redhat.com \
--cc=imammedo@redhat.com \
--cc=jeeheng.sia@starfivetech.com \
--cc=mst@redhat.com \
--cc=qemu-devel@nongnu.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox