From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753344AbaH2IAo (ORCPT ); Fri, 29 Aug 2014 04:00:44 -0400 Received: from e23smtp05.au.ibm.com ([202.81.31.147]:35304 "EHLO e23smtp05.au.ibm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753201AbaH2H7f (ORCPT ); Fri, 29 Aug 2014 03:59:35 -0400 From: Alexey Kardashevskiy To: linuxppc-dev@lists.ozlabs.org Cc: Alexey Kardashevskiy , Benjamin Herrenschmidt , Paul Mackerras , Michael Ellerman , Alex Williamson , Gavin Shan , linux-kernel@vger.kernel.org, cbe-oss-dev@lists.ozlabs.org, kvm@vger.kernel.org, linux-api@vger.kernel.org Subject: [PATCH 12/13] vfio: powerpc/spapr: Use it_page_size Date: Fri, 29 Aug 2014 17:59:15 +1000 Message-Id: <1409299156-618-13-git-send-email-aik@ozlabs.ru> X-Mailer: git-send-email 2.0.0 In-Reply-To: <1409299156-618-1-git-send-email-aik@ozlabs.ru> References: <1409299156-618-1-git-send-email-aik@ozlabs.ru> X-TM-AS-MML: disable X-Content-Scanned: Fidelis XPS MAILER x-cbid: 14082907-0017-0000-0000-00000025CB59 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org This makes use of the it_page_size from the iommu_table struct as page size can differ. This replaces missing IOMMU_PAGE_SHIFT macro in commented debug code as recently introduced IOMMU_PAGE_XXX macros do not include IOMMU_PAGE_SHIFT. Signed-off-by: Alexey Kardashevskiy --- drivers/vfio/vfio_iommu_spapr_tce.c | 36 ++++++++++++++++++------------------ 1 file changed, 18 insertions(+), 18 deletions(-) diff --git a/drivers/vfio/vfio_iommu_spapr_tce.c b/drivers/vfio/vfio_iommu_spapr_tce.c index c9fac97..0dccbc4 100644 --- a/drivers/vfio/vfio_iommu_spapr_tce.c +++ b/drivers/vfio/vfio_iommu_spapr_tce.c @@ -36,7 +36,7 @@ static long try_increment_locked_vm(struct iommu_table *tbl) if (!current || !current->mm) return -ESRCH; /* process exited */ - npages = (tbl->it_size << IOMMU_PAGE_SHIFT_4K) >> PAGE_SHIFT; + npages = (tbl->it_size << tbl->it_page_shift) >> PAGE_SHIFT; down_write(¤t->mm->mmap_sem); locked = current->mm->locked_vm + npages; @@ -60,7 +60,7 @@ static void decrement_locked_vm(struct iommu_table *tbl) if (!current || !current->mm) return; /* process exited */ - npages = (tbl->it_size << IOMMU_PAGE_SHIFT_4K) >> PAGE_SHIFT; + npages = (tbl->it_size << tbl->it_page_shift) >> PAGE_SHIFT; down_write(¤t->mm->mmap_sem); if (npages > current->mm->locked_vm) @@ -284,8 +284,8 @@ static long tce_iommu_ioctl(void *iommu_data, if (info.argsz < minsz) return -EINVAL; - info.dma32_window_start = tbl->it_offset << IOMMU_PAGE_SHIFT_4K; - info.dma32_window_size = tbl->it_size << IOMMU_PAGE_SHIFT_4K; + info.dma32_window_start = tbl->it_offset << tbl->it_page_shift; + info.dma32_window_size = tbl->it_size << tbl->it_page_shift; info.flags = 0; if (copy_to_user((void __user *)arg, &info, minsz)) @@ -318,10 +318,6 @@ static long tce_iommu_ioctl(void *iommu_data, VFIO_DMA_MAP_FLAG_WRITE)) return -EINVAL; - if ((param.size & ~IOMMU_PAGE_MASK_4K) || - (param.vaddr & ~IOMMU_PAGE_MASK_4K)) - return -EINVAL; - /* iova is checked by the IOMMU API */ tce = param.vaddr; if (param.flags & VFIO_DMA_MAP_FLAG_READ) @@ -334,21 +330,25 @@ static long tce_iommu_ioctl(void *iommu_data, return -ENXIO; BUG_ON(!tbl->it_group); + if ((param.size & ~IOMMU_PAGE_MASK(tbl)) || + (param.vaddr & ~IOMMU_PAGE_MASK(tbl))) + return -EINVAL; + ret = iommu_tce_put_param_check(tbl, param.iova, tce); if (ret) return ret; - for (i = 0; i < (param.size >> IOMMU_PAGE_SHIFT_4K); ++i) { + for (i = 0; i < (param.size >> tbl->it_page_shift); ++i) { ret = iommu_put_tce_user_mode(tbl, - (param.iova >> IOMMU_PAGE_SHIFT_4K) + i, + (param.iova >> tbl->it_page_shift) + i, tce); if (ret) break; - tce += IOMMU_PAGE_SIZE_4K; + tce += IOMMU_PAGE_SIZE(tbl); } if (ret) iommu_clear_tces_and_put_pages(tbl, - param.iova >> IOMMU_PAGE_SHIFT_4K, i); + param.iova >> tbl->it_page_shift, i); iommu_flush_tce(tbl); @@ -379,23 +379,23 @@ static long tce_iommu_ioctl(void *iommu_data, if (param.flags) return -EINVAL; - if (param.size & ~IOMMU_PAGE_MASK_4K) - return -EINVAL; - tbl = spapr_tce_find_table(container, data, param.iova); if (!tbl) return -ENXIO; + if (param.size & ~IOMMU_PAGE_MASK(tbl)) + return -EINVAL; + BUG_ON(!tbl->it_group); ret = iommu_tce_clear_param_check(tbl, param.iova, 0, - param.size >> IOMMU_PAGE_SHIFT_4K); + param.size >> tbl->it_page_shift); if (ret) return ret; ret = iommu_clear_tces_and_put_pages(tbl, - param.iova >> IOMMU_PAGE_SHIFT_4K, - param.size >> IOMMU_PAGE_SHIFT_4K); + param.iova >> tbl->it_page_shift, + param.size >> tbl->it_page_shift); iommu_flush_tce(tbl); return ret; -- 2.0.0