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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: Joerg Roedel <joerg.roedel@amd.com>
This commit is contained in:
Joerg Roedel 2009-05-05 15:33:57 +02:00
parent 92ac4320af
commit bfd1be1857
2 changed files with 12 additions and 0 deletions
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1
arch/x86/include/asm/amd_iommu.h
View File

@ -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) { }

11
arch/x86/kernel/amd_iommu.c
View File

@ -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