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> --- v2: Remove x2apic dependency --- arch/x86/Kconfig | 11 +++++++++++ 1 file changed, 11 insertions(+) diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig index 4474bf32d0a4..fed22fc66217 100644 --- a/arch/x86/Kconfig +++ b/arch/x86/Kconfig @@ -464,6 +464,17 @@ 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_64 && IRQ_REMAP + help + This enables MSIs that are under interrupt remapping to be delivered as + posted interrupts to the host kernel. Interrupt throughput can + potentially be improved by coalescing CPU notifications during high + frequency 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
