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| author | Jacob Pan <jacob.jun.pan@linux.intel.com> | 2024-04-23 10:41:06 -0700 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2024-04-30 00:54:42 +0200 |
| commit | 7fec07fd217800c5174f51d8869518807e9aa144 (patch) | |
| tree | 21f9bdd44346f24a320c6d3ec3d0793a2c7c9fd8 | |
| parent | 2254808b53d92c9fe7b645b2f43acc55f22cdce6 (diff) | |
| download | tip-7fec07fd217800c5174f51d8869518807e9aa144.tar.gz | |
x86/irq: Add a Kconfig option for posted MSI
This option will be used to support delivering MSIs as posted
interrupts. Interrupt remapping is required.
Signed-off-by: Jacob Pan <jacob.jun.pan@linux.intel.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Link: https://lore.kernel.org/r/20240423174114.526704-5-jacob.jun.pan@linux.intel.com
| -rw-r--r-- | arch/x86/Kconfig | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig index 4474bf32d0a49..fed22fc662179 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 |