From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id C426640E8DF; Mon, 29 Jun 2026 12:24:52 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1782735894; cv=none; b=aT/pUrzClnDEv5DqDGqbR5ZD/hzKN4c7iVLBs3NQyMP1tan5oBrs6MZHRgJcOkTXdFI04JPCOfoX61/xeTdBDSKOECgwjwDIPJQZeQoarKNkPLTOwPbLCcOgvP+liaQaXnpBiNy6koIBSNotXOxijnFKZ6Mgczg1hZb6jlQ3OdE= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1782735894; c=relaxed/simple; bh=XDDOoYC/Egq/PXPHqIxcTphf+9VGjC2EzkBkGBVaGlk=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=g/F+oeQ3oxEcdAqwFA1+sU0CEEjrgTeCLvfikW6kWQZ1gngt/U0Ce+hYo1f0+/5tki2FGO5QeoZEdiDIx6A941mxjjphxWXuR6GGRGvclMUUWNMkcw3eweGXHfWONfj37/Uvwzrfbe9/s1wM8z2dxGi3uHs2cJV5nnP3pHf80Q8= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=jdGf9jH9; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="jdGf9jH9" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 8A3A41F00A3D; Mon, 29 Jun 2026 12:24:51 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1782735892; bh=+tfecYI3iCL9+dzv6JtnQtpRoRey92E96q+WqEoW8Sw=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=jdGf9jH9adsBJRms93JJP2hO4xGy6V0e5hV2nXk2WS0hZ2yJvg9go1tFLhsAXUrnd D1dST5LU5l7l/ozI1VERvCoxX9njVJSdFvvIaWCvBDsDWfzkGyRiq325cmVLrry1Zy ws0snYdC7Z709CZvZySt0/MydVXYxo6HK0m+11iIQmh+aUD5W6SCmgucHBfO/XgDSB dWPU0haqhNHmmmg7aldX6EIdMkp7hJzh0g+78x/8Knt2+ALN7yHG00bcvR6zhVKvcQ rMq/f+Xh9kkJlTpeda7U2Jpw4Ur9pBeReuM1xj9AfSoMAEC/ukDTYL0C2FbWs+cPhH PIRri4XkVH9Eg== From: Lorenzo Stoakes To: Andrew Morton Cc: Russell King , Dinh Nguyen , Simon Schuster , "James E . J . Bottomley" , Helge Deller , Jarkko Sakkinen , Thomas Gleixner , Ingo Molnar , Borislav Petkov , Dave Hansen , x86@kernel.org, Ian Abbott , H Hartley Sweeten , Lucas Stach , David Airlie , Simona Vetter , Patrik Jakobsson , Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , Rob Clark , Dmitry Baryshkov , Tomi Valkeinen , Thierry Reding , Mikko Perttunen , Jonathan Hunter , Christian Koenig , Huang Rui , Ankit Agrawal , Alex Williamson , Alexander Viro , Christian Brauner , Dan Williams , Muchun Song , Oscar Salvador , David Hildenbrand , Suren Baghdasaryan , "Liam R . Howlett" , Matthew Wilcox , Marek Szyprowski , Peter Zijlstra , Arnaldo Carvalho de Melo , Namhyung Kim , Masami Hiramatsu , Oleg Nesterov , Steven Rostedt , SeongJae Park , Miaohe Lin , Hugh Dickins , Mike Rapoport , Kees Cook , Paolo Bonzini , linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-parisc@vger.kernel.org, linux-sgx@vger.kernel.org, etnaviv@lists.freedesktop.org, dri-devel@lists.freedesktop.org, linux-arm-msm@vger.kernel.org, freedreno@lists.freedesktop.org, linux-tegra@vger.kernel.org, kvm@vger.kernel.org, linux-fsdevel@vger.kernel.org, nvdimm@lists.linux.dev, linux-mm@kvack.org, iommu@lists.linux.dev, linux-perf-users@vger.kernel.org, linux-trace-kernel@vger.kernel.org, kasan-dev@googlegroups.com, damon@lists.linux.dev, Pedro Falcato , Rik van Riel , Harry Yoo , Jann Horn Subject: [PATCH 19/30] mm: use linear_page_[index, delta]() consistently Date: Mon, 29 Jun 2026 13:23:30 +0100 Message-ID: X-Mailer: git-send-email 2.54.0 In-Reply-To: References: Precedence: bulk X-Mailing-List: linux-trace-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit There are a number of places where we open code what linear_page_index() and linear_page_delta() calculate. Replace this code with the appropriate functions for consistency. No functional change intended. Signed-off-by: Lorenzo Stoakes --- arch/arm/mm/fault-armv.c | 2 +- arch/x86/kernel/cpu/sgx/virt.c | 3 ++- drivers/comedi/comedi_fops.c | 3 ++- drivers/gpu/drm/etnaviv/etnaviv_gem.c | 3 ++- drivers/gpu/drm/gma500/gem.c | 2 +- drivers/gpu/drm/msm/msm_gem.c | 3 ++- drivers/gpu/drm/omapdrm/omap_gem.c | 5 +++-- drivers/gpu/drm/tegra/gem.c | 3 ++- drivers/gpu/drm/ttm/ttm_bo_vm.c | 7 ++++--- drivers/vfio/pci/nvgrace-gpu/main.c | 3 ++- drivers/vfio/pci/vfio_pci_core.c | 3 ++- mm/nommu.c | 2 +- mm/vma.c | 2 +- virt/kvm/guest_memfd.c | 2 +- 14 files changed, 26 insertions(+), 17 deletions(-) diff --git a/arch/arm/mm/fault-armv.c b/arch/arm/mm/fault-armv.c index bd1ad4181a53..306cfd7b0765 100644 --- a/arch/arm/mm/fault-armv.c +++ b/arch/arm/mm/fault-armv.c @@ -132,7 +132,7 @@ make_coherent(struct address_space *mapping, struct vm_area_struct *vma, pgoff_t pgoff; int aliases = 0; - pgoff = vma->vm_pgoff + ((addr - vma->vm_start) >> PAGE_SHIFT); + pgoff = linear_page_index(vma, addr); /* * If we have any shared mappings that are in the same mm diff --git a/arch/x86/kernel/cpu/sgx/virt.c b/arch/x86/kernel/cpu/sgx/virt.c index db6806c40483..6a1933ddc6fc 100644 --- a/arch/x86/kernel/cpu/sgx/virt.c +++ b/arch/x86/kernel/cpu/sgx/virt.c @@ -9,6 +9,7 @@ #include #include #include +#include #include #include #include @@ -41,7 +42,7 @@ static int __sgx_vepc_fault(struct sgx_vepc *vepc, WARN_ON(!mutex_is_locked(&vepc->lock)); /* Calculate index of EPC page in virtual EPC's page_array */ - index = vma->vm_pgoff + PFN_DOWN(addr - vma->vm_start); + index = linear_page_index(vma, addr); epc_page = xa_load(&vepc->page_array, index); if (epc_page) diff --git a/drivers/comedi/comedi_fops.c b/drivers/comedi/comedi_fops.c index c09bbe04be6c..536c25d8dcee 100644 --- a/drivers/comedi/comedi_fops.c +++ b/drivers/comedi/comedi_fops.c @@ -25,6 +25,7 @@ #include #include #include +#include #include #include @@ -2462,7 +2463,7 @@ static int comedi_vm_access(struct vm_area_struct *vma, unsigned long addr, { struct comedi_buf_map *bm = vma->vm_private_data; unsigned long offset = - addr - vma->vm_start + (vma->vm_pgoff << PAGE_SHIFT); + addr - vma->vm_start + (vma_start_pgoff(vma) << PAGE_SHIFT); if (len < 0) return -EINVAL; diff --git a/drivers/gpu/drm/etnaviv/etnaviv_gem.c b/drivers/gpu/drm/etnaviv/etnaviv_gem.c index b0436a1e103f..2e4d6d117ee2 100644 --- a/drivers/gpu/drm/etnaviv/etnaviv_gem.c +++ b/drivers/gpu/drm/etnaviv/etnaviv_gem.c @@ -6,6 +6,7 @@ #include #include #include +#include #include #include #include @@ -188,7 +189,7 @@ static vm_fault_t etnaviv_gem_fault(struct vm_fault *vmf) } /* We don't use vmf->pgoff since that has the fake offset: */ - pgoff = (vmf->address - vma->vm_start) >> PAGE_SHIFT; + pgoff = linear_page_delta(vma, vmf->address); pfn = page_to_pfn(pages[pgoff]); diff --git a/drivers/gpu/drm/gma500/gem.c b/drivers/gpu/drm/gma500/gem.c index 88f1e86c8903..2708e8c68f4c 100644 --- a/drivers/gpu/drm/gma500/gem.c +++ b/drivers/gpu/drm/gma500/gem.c @@ -288,7 +288,7 @@ static vm_fault_t psb_gem_fault(struct vm_fault *vmf) /* Page relative to the VMA start - we must calculate this ourselves because vmf->pgoff is the fake GEM offset */ - page_offset = (vmf->address - vma->vm_start) >> PAGE_SHIFT; + page_offset = linear_page_delta(vma, vmf->address); /* CPU view of the page, don't go via the GART for CPU writes */ if (pobj->stolen) diff --git a/drivers/gpu/drm/msm/msm_gem.c b/drivers/gpu/drm/msm/msm_gem.c index efd3d3c9a449..cbf723a5d86f 100644 --- a/drivers/gpu/drm/msm/msm_gem.c +++ b/drivers/gpu/drm/msm/msm_gem.c @@ -9,6 +9,7 @@ #include #include #include +#include #include #include @@ -360,7 +361,7 @@ static vm_fault_t msm_gem_fault(struct vm_fault *vmf) } /* We don't use vmf->pgoff since that has the fake offset: */ - pgoff = (vmf->address - vma->vm_start) >> PAGE_SHIFT; + pgoff = linear_page_delta(vma, vmf->address); pfn = page_to_pfn(pages[pgoff]); diff --git a/drivers/gpu/drm/omapdrm/omap_gem.c b/drivers/gpu/drm/omapdrm/omap_gem.c index 8e013e4f2c6b..00404fb6c29a 100644 --- a/drivers/gpu/drm/omapdrm/omap_gem.c +++ b/drivers/gpu/drm/omapdrm/omap_gem.c @@ -5,6 +5,7 @@ */ #include +#include #include #include #include @@ -359,7 +360,7 @@ static vm_fault_t omap_gem_fault_1d(struct drm_gem_object *obj, pgoff_t pgoff; /* We don't use vmf->pgoff since that has the fake offset: */ - pgoff = (vmf->address - vma->vm_start) >> PAGE_SHIFT; + pgoff = linear_page_delta(vma, vmf->address); if (omap_obj->pages) { omap_gem_cpu_sync_page(obj, pgoff); @@ -407,7 +408,7 @@ static vm_fault_t omap_gem_fault_2d(struct drm_gem_object *obj, const int m = DIV_ROUND_UP(omap_obj->width << fmt, PAGE_SIZE); /* We don't use vmf->pgoff since that has the fake offset: */ - pgoff = (vmf->address - vma->vm_start) >> PAGE_SHIFT; + pgoff = linear_page_delta(vma, vmf->address); /* * Actual address we start mapping at is rounded down to previous slot diff --git a/drivers/gpu/drm/tegra/gem.c b/drivers/gpu/drm/tegra/gem.c index 436394e04812..1d8d27a5ea89 100644 --- a/drivers/gpu/drm/tegra/gem.c +++ b/drivers/gpu/drm/tegra/gem.c @@ -13,6 +13,7 @@ #include #include #include +#include #include #include @@ -564,7 +565,7 @@ static vm_fault_t tegra_bo_fault(struct vm_fault *vmf) if (!bo->pages) return VM_FAULT_SIGBUS; - offset = (vmf->address - vma->vm_start) >> PAGE_SHIFT; + offset = linear_page_delta(vma, vmf->address); page = bo->pages[offset]; return vmf_insert_page(vma, vmf->address, page); diff --git a/drivers/gpu/drm/ttm/ttm_bo_vm.c b/drivers/gpu/drm/ttm/ttm_bo_vm.c index a80510489c45..88babf435ac2 100644 --- a/drivers/gpu/drm/ttm/ttm_bo_vm.c +++ b/drivers/gpu/drm/ttm/ttm_bo_vm.c @@ -32,6 +32,7 @@ #define pr_fmt(fmt) "[TTM] " fmt #include +#include #include #include @@ -208,9 +209,9 @@ vm_fault_t ttm_bo_vm_fault_reserved(struct vm_fault *vmf, if (unlikely(err != 0)) return VM_FAULT_SIGBUS; - page_offset = ((address - vma->vm_start) >> PAGE_SHIFT) + - vma->vm_pgoff - drm_vma_node_start(&bo->base.vma_node); - page_last = vma_pages(vma) + vma->vm_pgoff - + page_offset = linear_page_index(vma, address) - + drm_vma_node_start(&bo->base.vma_node); + page_last = vma_end_pgoff(vma) - drm_vma_node_start(&bo->base.vma_node); if (unlikely(page_offset >= PFN_UP(bo->base.size))) diff --git a/drivers/vfio/pci/nvgrace-gpu/main.c b/drivers/vfio/pci/nvgrace-gpu/main.c index d07dcacb76bd..963fd8ded20d 100644 --- a/drivers/vfio/pci/nvgrace-gpu/main.c +++ b/drivers/vfio/pci/nvgrace-gpu/main.c @@ -11,6 +11,7 @@ #include #include #include +#include #include #include @@ -385,7 +386,7 @@ static unsigned long addr_to_pgoff(struct vm_area_struct *vma, u64 pgoff = vma->vm_pgoff & ((1U << (VFIO_PCI_OFFSET_SHIFT - PAGE_SHIFT)) - 1); - return ((addr - vma->vm_start) >> PAGE_SHIFT) + pgoff; + return linear_page_delta(vma, addr) + pgoff; } static vm_fault_t nvgrace_gpu_vfio_pci_huge_fault(struct vm_fault *vmf, diff --git a/drivers/vfio/pci/vfio_pci_core.c b/drivers/vfio/pci/vfio_pci_core.c index a28f1e99362c..55d4937d495a 100644 --- a/drivers/vfio/pci/vfio_pci_core.c +++ b/drivers/vfio/pci/vfio_pci_core.c @@ -19,6 +19,7 @@ #include #include #include +#include #include #include #include @@ -1727,7 +1728,7 @@ static vm_fault_t vfio_pci_mmap_huge_fault(struct vm_fault *vmf, struct vm_area_struct *vma = vmf->vma; struct vfio_pci_core_device *vdev = vma->vm_private_data; unsigned long addr = vmf->address & ~((PAGE_SIZE << order) - 1); - unsigned long pgoff = (addr - vma->vm_start) >> PAGE_SHIFT; + unsigned long pgoff = linear_page_delta(vma, addr); unsigned long pfn = vma_to_pfn(vma) + pgoff; vm_fault_t ret = VM_FAULT_FALLBACK; diff --git a/mm/nommu.c b/mm/nommu.c index 60560b2c457e..7333d855e974 100644 --- a/mm/nommu.c +++ b/mm/nommu.c @@ -1332,7 +1332,7 @@ static int split_vma(struct vma_iterator *vmi, struct vm_area_struct *vma, *region = *vma->vm_region; new->vm_region = region; - npages = (addr - vma->vm_start) >> PAGE_SHIFT; + npages = linear_page_delta(vma, addr); if (new_below) { region->vm_top = region->vm_end = new->vm_end = addr; diff --git a/mm/vma.c b/mm/vma.c index ee3a8ca13d07..185d07397ca6 100644 --- a/mm/vma.c +++ b/mm/vma.c @@ -517,7 +517,7 @@ __split_vma(struct vma_iterator *vmi, struct vm_area_struct *vma, new->vm_end = addr; } else { new->vm_start = addr; - new->vm_pgoff += ((addr - vma->vm_start) >> PAGE_SHIFT); + new->vm_pgoff += linear_page_delta(vma, addr); } err = -ENOMEM; diff --git a/virt/kvm/guest_memfd.c b/virt/kvm/guest_memfd.c index db57c5766ab6..f0e5da490866 100644 --- a/virt/kvm/guest_memfd.c +++ b/virt/kvm/guest_memfd.c @@ -440,7 +440,7 @@ static int kvm_gmem_set_policy(struct vm_area_struct *vma, struct mempolicy *mpo static struct mempolicy *kvm_gmem_get_policy(struct vm_area_struct *vma, unsigned long addr, pgoff_t *ilx) { - pgoff_t pgoff = vma->vm_pgoff + ((addr - vma->vm_start) >> PAGE_SHIFT); + pgoff_t pgoff = linear_page_index(vma, addr); struct inode *inode = file_inode(vma->vm_file); *ilx = inode->i_ino; -- 2.54.0