From 423f085952fd7253407cb92984cc2d495a564481 Mon Sep 17 00:00:00 2001 From: Thomas Gleixner Date: Sun, 10 Oct 2010 11:39:09 +0200 Subject: [PATCH] x86: Embedd irq_2_iommu into irq_cfg That interrupt remapping code is x86 specific and tied to the io_apic code. No need for separate allocator functions in the interrupt remapping code. This allows to simplify the code and irq_2_iommu is small (13 bytes on 64bit) so it's not a real problem even if interrupt remapping is runtime disabled. If it's compile time disabled the impact is zero. Signed-off-by: Thomas Gleixner Reviewed-by: Ingo Molnar Acked-by: Suresh Siddha Cc: David Woodhouse Cc: Jesse Barnes --- arch/x86/include/asm/hw_irq.h | 10 ++++++++++ drivers/pci/intr_remapping.c | 7 ------- include/linux/dmar.h | 1 + 3 files changed, 11 insertions(+), 7 deletions(-) diff --git a/arch/x86/include/asm/hw_irq.h b/arch/x86/include/asm/hw_irq.h index 76848f27b1ac..e756c4bfed94 100644 --- a/arch/x86/include/asm/hw_irq.h +++ b/arch/x86/include/asm/hw_irq.h @@ -78,6 +78,13 @@ static inline void set_io_apic_irq_attr(struct io_apic_irq_attr *irq_attr, irq_attr->polarity = polarity; } +struct irq_2_iommu { + struct intel_iommu *iommu; + u16 irte_index; + u16 sub_handle; + u8 irte_mask; +}; + /* * This is performance-critical, we want to do it O(1) * @@ -89,6 +96,9 @@ struct irq_cfg { cpumask_var_t old_domain; u8 vector; u8 move_in_progress : 1; +#ifdef CONFIG_INTR_REMAP + struct irq_2_iommu irq_2_iommu; +#endif }; extern struct irq_cfg *irq_cfg(unsigned int); diff --git a/drivers/pci/intr_remapping.c b/drivers/pci/intr_remapping.c index 343f7299c783..0f4691c5fab3 100644 --- a/drivers/pci/intr_remapping.c +++ b/drivers/pci/intr_remapping.c @@ -46,13 +46,6 @@ static __init int setup_intremap(char *str) } early_param("intremap", setup_intremap); -struct irq_2_iommu { - struct intel_iommu *iommu; - u16 irte_index; - u16 sub_handle; - u8 irte_mask; -}; - #ifdef CONFIG_GENERIC_HARDIRQS static struct irq_2_iommu *irq_2_iommu(unsigned int irq) { diff --git a/include/linux/dmar.h b/include/linux/dmar.h index 200439ec7c49..4475f8cf7a62 100644 --- a/include/linux/dmar.h +++ b/include/linux/dmar.h @@ -106,6 +106,7 @@ struct irte { __u64 high; }; }; + #ifdef CONFIG_INTR_REMAP extern int intr_remapping_enabled; extern int intr_remapping_supported(void); -- 2.39.5