Michael Ellerman <mpe@xxxxxxxxxxxxxx> writes:
> Stephen Rothwell <sfr@xxxxxxxxxxxxxxxx> writes:
...
>> On Tue, 9 Apr 2024 10:51:05 -0700 Sean Christopherson <seanjc@xxxxxxxxxx> wrote:
...
>>> diff --git a/kernel/cpu.c b/kernel/cpu.c
>>> index 8f6affd051f7..07ad53b7f119 100644
>>> --- a/kernel/cpu.c
>>> +++ b/kernel/cpu.c
>>> @@ -3207,7 +3207,8 @@ enum cpu_mitigations {
>>> };
>>>
>>> static enum cpu_mitigations cpu_mitigations __ro_after_init =
>>> - CPU_MITIGATIONS_AUTO;
>>> + IS_ENABLED(CONFIG_SPECULATION_MITIGATIONS) ? CPU_MITIGATIONS_AUTO :
>>> + CPU_MITIGATIONS_OFF;
>>>
>>> static int __init mitigations_parse_cmdline(char *arg)
>>> {
I think a minimal workaround/fix would be:
diff --git a/drivers/base/Kconfig b/drivers/base/Kconfig
index 2b8fd6bb7da0..290be2f9e909 100644
--- a/drivers/base/Kconfig
+++ b/drivers/base/Kconfig
@@ -191,6 +191,10 @@ config GENERIC_CPU_AUTOPROBE
config GENERIC_CPU_VULNERABILITIES
bool
+config SPECULATION_MITIGATIONS
+ def_bool y
+ depends on !X86
+
config SOC_BUS
bool
select GLOB
cheers
