From: Arnd Bergmann Date: Mon, 13 Apr 2026 07:01:26 +0000 (+0200) Subject: ACPI: add acpi_get_cpu_uid() stub helper X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=fbd5d52ebf49595975e24e14e57632d580738091;p=thirdparty%2Fkernel%2Fstable.git ACPI: add acpi_get_cpu_uid() stub helper When ACPI is disabled, x86 Xen support fails to build: arch/x86/xen/enlighten_hvm.c: In function 'xen_cpu_up_prepare_hvm': arch/x86/xen/enlighten_hvm.c:165:13: error: implicit declaration of function 'acpi_get_cpu_uid' [-Wimplicit-function-declaration] 165 | if (acpi_get_cpu_uid(cpu, &cpu_uid) == 0) | ^~~~~~~~~~~~~~~~ Add a trivial stub that can be used in place of the real function. Fixes: f652d0a4e13c ("ACPI: Centralize acpi_get_cpu_uid() declaration in include/linux/acpi.h") Signed-off-by: Arnd Bergmann Acked-by: Chengwen Feng Link: https://patch.msgid.link/20260413070132.3828606-1-arnd@kernel.org Signed-off-by: Rafael J. Wysocki --- diff --git a/include/linux/acpi.h b/include/linux/acpi.h index bfacb9475aac..67effb91fa98 100644 --- a/include/linux/acpi.h +++ b/include/linux/acpi.h @@ -959,6 +959,12 @@ static inline int acpi_table_parse(char *id, return -ENODEV; } +static inline int acpi_get_cpu_uid(unsigned int cpu, u32 *uid) +{ + *uid = cpu; + return 0; +} + static inline int acpi_nvs_register(__u64 start, __u64 size) { return 0;