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Commit bfd1be18 authored by Joerg Roedel's avatar Joerg Roedel
Browse files

amd-iommu: add function to flush tlb for all domains 



This function is required for suspend/resume support with AMD IOMMU
enabled.

Signed-off-by: default avatarJoerg Roedel <joerg.roedel@amd.com>
parent 92ac4320

arch/x86/include/asm/amd_iommu.h

+1 −0
Original line number Diff line number Diff line
@@ -27,6 +27,7 @@ extern int amd_iommu_init(void); 
extern int amd_iommu_init_dma_ops(void);

extern void amd_iommu_detect(void);

extern irqreturn_t amd_iommu_int_handler(int irq, void *data);

extern void amd_iommu_flush_all_domains(void);

#else

static inline int amd_iommu_init(void) { return -ENODEV; }

static inline void amd_iommu_detect(void) { }

arch/x86/kernel/amd_iommu.c

+11 −0
Original line number Diff line number Diff line
@@ -449,6 +449,17 @@ static void iommu_flush_domain(u16 domid) 
	}

}



void amd_iommu_flush_all_domains(void)

{

	int i;



	for (i = 1; i < MAX_DOMAIN_ID; ++i) {

		if (!test_bit(i, amd_iommu_pd_alloc_bitmap))

			continue;

		iommu_flush_domain(i);

	}

}



/****************************************************************************

 *

 * The functions below are used the create the page table mappings for