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https://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson
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008fe148cb
On ia64 with CONFIG_DMAR=n and CONFIG_SWIOTLB=y (as used in arch/ia64/configs/tiger_defconfig) there is still a link error with iommu_pass_through listed as an undefined symbol: arch/ia64/kernel/built-in.o: In function `pci_swiotlb_init': (.init.text+0x7f70): undefined reference to `iommu_pass_through' Fix it by #defining iommu_pass_through away in asm/iommu.h Signed-off-by: Tony Luck <tony.luck@intel.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
21 lines
484 B
C
21 lines
484 B
C
#ifndef _ASM_IA64_IOMMU_H
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#define _ASM_IA64_IOMMU_H 1
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#define cpu_has_x2apic 0
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/* 10 seconds */
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#define DMAR_OPERATION_TIMEOUT (((cycles_t) local_cpu_data->itc_freq)*10)
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extern void pci_iommu_shutdown(void);
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extern void no_iommu_init(void);
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extern int force_iommu, no_iommu;
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extern int iommu_detected;
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#ifdef CONFIG_DMAR
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extern int iommu_pass_through;
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#else
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#define iommu_pass_through (0)
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#endif
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extern void iommu_dma_init(void);
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extern void machvec_init(const char *name);
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#endif
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