From mboxrd@z Thu Jan 1 00:00:00 1970 From: Joerg Roedel Subject: [PATCH 12/13] IB/usnic: Use sychronized interface of the IOMMU-API Date: Thu, 17 Aug 2017 14:56:35 +0200 Message-ID: <1502974596-23835-13-git-send-email-joro@8bytes.org> References: <1502974596-23835-1-git-send-email-joro@8bytes.org> Return-path: In-Reply-To: <1502974596-23835-1-git-send-email-joro@8bytes.org> Sender: linux-kernel-owner@vger.kernel.org To: iommu@lists.linux-foundation.org Cc: linux-kernel@vger.kernel.org, Suravee Suthikulpanit , Joerg Roedel , Christian Benvenuti , Dave Goodell , Doug Ledford , Sean Hefty , Hal Rosenstock , linux-rdma@vger.kernel.org List-Id: iommu@lists.linux-foundation.org From: Joerg Roedel The map and unmap functions of the IOMMU-API changed their semantics: They do no longer guarantee that the hardware TLBs are synchronized with the page-table updates they made. To make conversion easier, new synchronized functions have been introduced which give these guarantees again until the code is converted to use the new TLB-flush interface of the IOMMU-API, which allows certain optimizations. But for now, just convert this code to use the synchronized functions so that it will behave as before. Cc: Christian Benvenuti Cc: Dave Goodell Cc: Doug Ledford Cc: Sean Hefty Cc: Hal Rosenstock Cc: linux-rdma@vger.kernel.org Signed-off-by: Joerg Roedel --- drivers/infiniband/hw/usnic/usnic_uiom.c | 10 +++++----- 1 file changed, 5 insertions(+), 5 deletions(-) diff --git a/drivers/infiniband/hw/usnic/usnic_uiom.c b/drivers/infiniband/hw/usnic/usnic_uiom.c index c49db7c..e53dc38 100644 --- a/drivers/infiniband/hw/usnic/usnic_uiom.c +++ b/drivers/infiniband/hw/usnic/usnic_uiom.c @@ -205,7 +205,7 @@ static void usnic_uiom_unmap_sorted_intervals(struct list_head *intervals, while (size > 0) { /* Workaround for RH 970401 */ usnic_dbg("va 0x%lx size 0x%lx", va, PAGE_SIZE); - iommu_unmap(pd->domain, va, PAGE_SIZE); + iommu_unmap_sync(pd->domain, va, PAGE_SIZE); va += PAGE_SIZE; size -= PAGE_SIZE; } @@ -282,8 +282,8 @@ static int usnic_uiom_map_sorted_intervals(struct list_head *intervals, size = pa_end - pa_start + PAGE_SIZE; usnic_dbg("va 0x%lx pa %pa size 0x%zx flags 0x%x", va_start, &pa_start, size, flags); - err = iommu_map(pd->domain, va_start, pa_start, - size, flags); + err = iommu_map_sync(pd->domain, va_start, + pa_start, size, flags); if (err) { usnic_err("Failed to map va 0x%lx pa %pa size 0x%zx with err %d\n", va_start, &pa_start, size, err); @@ -299,8 +299,8 @@ static int usnic_uiom_map_sorted_intervals(struct list_head *intervals, size = pa - pa_start + PAGE_SIZE; usnic_dbg("va 0x%lx pa %pa size 0x%zx flags 0x%x\n", va_start, &pa_start, size, flags); - err = iommu_map(pd->domain, va_start, pa_start, - size, flags); + err = iommu_map_sync(pd->domain, va_start, + pa_start, size, flags); if (err) { usnic_err("Failed to map va 0x%lx pa %pa size 0x%zx with err %d\n", va_start, &pa_start, size, err); -- 2.7.4