diff options
| -rw-r--r-- | arch/x86/kernel/amd_iommu.c | 49 |
1 files changed, 33 insertions, 16 deletions
diff --git a/arch/x86/kernel/amd_iommu.c b/arch/x86/kernel/amd_iommu.c index e62b35f5df1..64cc582feb9 100644 --- a/arch/x86/kernel/amd_iommu.c +++ b/arch/x86/kernel/amd_iommu.c @@ -465,38 +465,55 @@ static void iommu_flush_tlb_pde(struct amd_iommu *iommu, u16 domid) } /* - * This function is used to flush the IO/TLB for a given protection domain - * on every IOMMU in the system + * This function flushes one domain on one IOMMU */ -static void iommu_flush_domain(u16 domid) +static void flush_domain_on_iommu(struct amd_iommu *iommu, u16 domid) { - unsigned long flags; - struct amd_iommu *iommu; struct iommu_cmd cmd; - - INC_STATS_COUNTER(domain_flush_all); + unsigned long flags; __iommu_build_inv_iommu_pages(&cmd, CMD_INV_IOMMU_ALL_PAGES_ADDRESS, domid, 1, 1); - for_each_iommu(iommu) { - spin_lock_irqsave(&iommu->lock, flags); - __iommu_queue_command(iommu, &cmd); - __iommu_completion_wait(iommu); - __iommu_wait_for_completion(iommu); - spin_unlock_irqrestore(&iommu->lock, flags); - } + spin_lock_irqsave(&iommu->lock, flags); + __iommu_queue_command(iommu, &cmd); + __iommu_completion_wait(iommu); + __iommu_wait_for_completion(iommu); + spin_unlock_irqrestore(&iommu->lock, flags); } -void amd_iommu_flush_all_domains(void) +static void flush_all_domains_on_iommu(struct amd_iommu *iommu) { int i; for (i = 1; i < MAX_DOMAIN_ID; ++i) { if (!test_bit(i, amd_iommu_pd_alloc_bitmap)) continue; - iommu_flush_domain(i); + flush_domain_on_iommu(iommu, i); } + +} + +/* + * This function is used to flush the IO/TLB for a given protection domain + * on every IOMMU in the system + */ +static void iommu_flush_domain(u16 domid) +{ + struct amd_iommu *iommu; + + INC_STATS_COUNTER(domain_flush_all); + + for_each_iommu(iommu) + flush_domain_on_iommu(iommu, domid); +} + +void amd_iommu_flush_all_domains(void) +{ + struct amd_iommu *iommu; + + for_each_iommu(iommu) + flush_all_domains_on_iommu(iommu); } void amd_iommu_flush_all_devices(void) |