diff options
| author | Jacob Pan <jacob.jun.pan@linux.intel.com> | 2024-04-23 20:41:13 +0300 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2024-04-30 01:54:43 +0300 |
| commit | be9be07b22c96dc03d0ecc76b5a5f21c2dcb05a1 (patch) | |
| tree | c200afbc2ceee56b34291b813b8f174bd25cd661 /arch/x86/include | |
| parent | ce0a92871179f8ca58ae8e3cf50e726a163bf831 (diff) | |
| download | linux-be9be07b22c96dc03d0ecc76b5a5f21c2dcb05a1.tar.xz | |
iommu/vt-d: Make posted MSI an opt-in command line option
Add a command line opt-in option for posted MSI if CONFIG_X86_POSTED_MSI=y.
Also introduce a helper function for testing if posted MSI is supported on
the platform.
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/20240423174114.526704-12-jacob.jun.pan@linux.intel.com
Diffstat (limited to 'arch/x86/include')
| -rw-r--r-- | arch/x86/include/asm/irq_remapping.h | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/arch/x86/include/asm/irq_remapping.h b/arch/x86/include/asm/irq_remapping.h index 7a2ed154a5e1..5036f13ab69f 100644 --- a/arch/x86/include/asm/irq_remapping.h +++ b/arch/x86/include/asm/irq_remapping.h @@ -50,6 +50,13 @@ static inline struct irq_domain *arch_get_ir_parent_domain(void) return x86_vector_domain; } +extern bool enable_posted_msi; + +static inline bool posted_msi_supported(void) +{ + return enable_posted_msi && irq_remapping_cap(IRQ_POSTING_CAP); +} + #else /* CONFIG_IRQ_REMAP */ static inline bool irq_remapping_cap(enum irq_remap_cap cap) { return 0; } |