diff options
| author | Jacob Pan <jacob.jun.pan@linux.intel.com> | 2024-04-23 20:41:11 +0300 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2024-04-30 01:54:43 +0300 |
| commit | fef05a078b6fa1e9047e0486f1f6daf70664fd12 (patch) | |
| tree | f34757b2598d1dd3a23b3e0d3c646f1fa611e989 /arch/x86/include | |
| parent | 1b03d82ba15e895776f1f7da2bb56a9a60e6dfed (diff) | |
| download | linux-fef05a078b6fa1e9047e0486f1f6daf70664fd12.tar.xz | |
x86/irq: Factor out common code for checking pending interrupts
Use a common function for checking pending interrupt vector in APIC IRR
instead of duplicated open coding them.
Additional checks for posted MSI vectors can then be contained in this
function.
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/20240423174114.526704-10-jacob.jun.pan@linux.intel.com
Diffstat (limited to 'arch/x86/include')
| -rw-r--r-- | arch/x86/include/asm/apic.h | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/arch/x86/include/asm/apic.h b/arch/x86/include/asm/apic.h index e6ab0cf15ed5..50f9781fa3ed 100644 --- a/arch/x86/include/asm/apic.h +++ b/arch/x86/include/asm/apic.h @@ -500,6 +500,17 @@ static inline bool lapic_vector_set_in_irr(unsigned int vector) return !!(irr & (1U << (vector % 32))); } +static inline bool is_vector_pending(unsigned int vector) +{ + unsigned int irr; + + irr = apic_read(APIC_IRR + (vector / 32 * 0x10)); + if (irr & (1 << (vector % 32))) + return true; + + return false; +} + /* * Warm reset vector position: */ |