diff options
| author | Joerg Roedel <joerg.roedel@amd.com> | 2009-05-05 15:33:57 +0200 |
|---|---|---|
| committer | Joerg Roedel <joerg.roedel@amd.com> | 2009-05-28 18:10:12 +0200 |
| commit | bfd1be1857e5a3385bf146e02e6dc3dd4241bec1 (patch) | |
| tree | b33ca1a26dcecae3556ea9a1c3c019ffcfaab52e /arch | |
| parent | 92ac4320af6ed4294c2c221dd4ccbfd9026a3aa7 (diff) | |
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>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/x86/include/asm/amd_iommu.h | 1 | ||||
| -rw-r--r-- | arch/x86/kernel/amd_iommu.c | 11 |
2 files changed, 12 insertions, 0 deletions
diff --git a/arch/x86/include/asm/amd_iommu.h b/arch/x86/include/asm/amd_iommu.h index f712344329bc..1750e1f85d3c 100644 --- a/arch/x86/include/asm/amd_iommu.h +++ b/arch/x86/include/asm/amd_iommu.h @@ -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) { } diff --git a/arch/x86/kernel/amd_iommu.c b/arch/x86/kernel/amd_iommu.c index d9e9dc141a1e..826ad079efc4 100644 --- a/arch/x86/kernel/amd_iommu.c +++ b/arch/x86/kernel/amd_iommu.c @@ -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 |