This option will be used to support delivering MSIs as posted interrupts. Interrupt remapping is required. Signed-off-by: Jacob Pan <jacob.jun.pan@xxxxxxxxxxxxxxx> --- arch/x86/Kconfig | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig index 66bfabae8814..f16882ddb390 100644 --- a/arch/x86/Kconfig +++ b/arch/x86/Kconfig @@ -463,6 +463,16 @@ config X86_X2APIC If you don't know what to do here, say N. +config X86_POSTED_MSI + bool "Enable MSI and MSI-x delivery by posted interrupts" + depends on X86_X2APIC && X86_64 && IRQ_REMAP + help + This enables MSIs that are under IRQ remapping to be delivered as posted + interrupts to the host kernel. IRQ throughput can potentially be improved + by coalescing CPU notifications during high frequency IRQ bursts. + + If you don't know what to do here, say N. + config X86_MPPARSE bool "Enable MPS table" if ACPI default y -- 2.25.1
