All x86 PCI configuration space accessors have either their own serialization or can operate completely lockless (ECAM).
Disable the global lock in the generic PCI configuration space accessors. Signed-off-by: Thomas Gleixner <[email protected]> --- arch/x86/Kconfig | 1 + 1 file changed, 1 insertion(+) --- a/arch/x86/Kconfig +++ b/arch/x86/Kconfig @@ -165,6 +165,7 @@ config X86 select HAVE_UNSTABLE_SCHED_CLOCK select HAVE_USER_RETURN_NOTIFIER select IRQ_FORCED_THREADING + select PCI_LOCKLESS_CONFIG select PERF_EVENTS select RTC_LIB select RTC_MC146818_LIB
