Hi Li Chen, On 2025/6/6 15:27, Li Chen wrote:
From: Li Chen <chenl311@xxxxxxxxxxxxxxx> This small series improves the kernel behavior and output when the ACPI SPCR table is not present or not supported. Currently, even on systems that completely lack an SPCR table, the kernel prints: "Use ACPI SPCR as default console: Yes"
Agreed, this is wrong, we need to fix it.
Or if with acpi=nospcr: "Use ACPI SPCR as default console: No"
I think this is OK, it's just to let you know we are not using ACPI SPCR console when ACPI is enabled, including cases with no SPCR table.
This may mislead users into thinking an SPCR table exists when in fact there is no such table at all. This series addresses this in two steps: Patch 1 ensures that acpi_parse_spcr() returns -ENODEV if CONFIG_ACPI_SPCR_TABLE is disabled. Patch 2 updates arm64 acpi_boot_table_init() to only print the SPCR console message if acpi_parse_spcr() succeeds.
I have some detail comments for patch 2. Thanks Hanjun
