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author | David P <megver83@parabola.nu> | 2020-03-30 18:23:49 -0400 |
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committer | David P <megver83@parabola.nu> | 2020-03-30 18:23:49 -0400 |
commit | 72c9ab660ff2d9068ffb126e3ee45aba10877507 (patch) | |
tree | 17bc24fe8efd8b02be9f30acd94c604e964eb1cd /kernels/linux-libre-xtreme/0003-drm-Remove-PageReserved-manipulation-from-drm_pci_al.patch | |
parent | f9ec026b6d59348459a8e57046587d5a4ae7e4a1 (diff) | |
download | abslibre-72c9ab660ff2d9068ffb126e3ee45aba10877507.tar.gz abslibre-72c9ab660ff2d9068ffb126e3ee45aba10877507.tar.bz2 abslibre-72c9ab660ff2d9068ffb126e3ee45aba10877507.zip |
updpkg: kernels/linux-libre-xtreme 5.5.13-1
Signed-off-by: David P <megver83@parabola.nu>
Diffstat (limited to 'kernels/linux-libre-xtreme/0003-drm-Remove-PageReserved-manipulation-from-drm_pci_al.patch')
-rw-r--r-- | kernels/linux-libre-xtreme/0003-drm-Remove-PageReserved-manipulation-from-drm_pci_al.patch | 92 |
1 files changed, 92 insertions, 0 deletions
diff --git a/kernels/linux-libre-xtreme/0003-drm-Remove-PageReserved-manipulation-from-drm_pci_al.patch b/kernels/linux-libre-xtreme/0003-drm-Remove-PageReserved-manipulation-from-drm_pci_al.patch new file mode 100644 index 000000000..9ce302035 --- /dev/null +++ b/kernels/linux-libre-xtreme/0003-drm-Remove-PageReserved-manipulation-from-drm_pci_al.patch @@ -0,0 +1,92 @@ +From 7e8f0d17203665f1e6cb110ecbfc90e9ebed8c28 Mon Sep 17 00:00:00 2001 +From: Chris Wilson <chris@chris-wilson.co.uk> +Date: Sun, 2 Feb 2020 17:16:31 +0000 +Subject: [PATCH 03/11] drm: Remove PageReserved manipulation from + drm_pci_alloc + +drm_pci_alloc/drm_pci_free are very thin wrappers around the core dma +facilities, and we have no special reason within the drm layer to behave +differently. In particular, since + +commit de09d31dd38a50fdce106c15abd68432eebbd014 +Author: Kirill A. Shutemov <kirill.shutemov@linux.intel.com> +Date: Fri Jan 15 16:51:42 2016 -0800 + + page-flags: define PG_reserved behavior on compound pages + + As far as I can see there's no users of PG_reserved on compound pages. + Let's use PF_NO_COMPOUND here. + +it has been illegal to combine GFP_COMP with SetPageReserved, so lets +stop doing both and leave the dma layer to its own devices. + +Reported-by: Taketo Kabe +Bug: https://gitlab.freedesktop.org/drm/intel/issues/1027 +Fixes: de09d31dd38a ("page-flags: define PG_reserved behavior on compound pages") +Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> +Cc: <stable@vger.kernel.org> # v4.5+ +Reviewed-by: Alex Deucher <alexander.deucher@amd.com> +Link: https://patchwork.freedesktop.org/patch/msgid/20200202171635.4039044-1-chris@chris-wilson.co.uk +--- + drivers/gpu/drm/drm_pci.c | 23 ++--------------------- + 1 file changed, 2 insertions(+), 21 deletions(-) + +diff --git a/drivers/gpu/drm/drm_pci.c b/drivers/gpu/drm/drm_pci.c +index a86a3ab2771c..235729f4aadb 100644 +--- a/drivers/gpu/drm/drm_pci.c ++++ b/drivers/gpu/drm/drm_pci.c +@@ -51,8 +51,6 @@ + drm_dma_handle_t *drm_pci_alloc(struct drm_device * dev, size_t size, size_t align) + { + drm_dma_handle_t *dmah; +- unsigned long addr; +- size_t sz; + + /* pci_alloc_consistent only guarantees alignment to the smallest + * PAGE_SIZE order which is greater than or equal to the requested size. +@@ -68,20 +66,13 @@ drm_dma_handle_t *drm_pci_alloc(struct drm_device * dev, size_t size, size_t ali + dmah->size = size; + dmah->vaddr = dma_alloc_coherent(&dev->pdev->dev, size, + &dmah->busaddr, +- GFP_KERNEL | __GFP_COMP); ++ GFP_KERNEL); + + if (dmah->vaddr == NULL) { + kfree(dmah); + return NULL; + } + +- /* XXX - Is virt_to_page() legal for consistent mem? */ +- /* Reserve */ +- for (addr = (unsigned long)dmah->vaddr, sz = size; +- sz > 0; addr += PAGE_SIZE, sz -= PAGE_SIZE) { +- SetPageReserved(virt_to_page((void *)addr)); +- } +- + return dmah; + } + +@@ -94,19 +85,9 @@ EXPORT_SYMBOL(drm_pci_alloc); + */ + void __drm_legacy_pci_free(struct drm_device * dev, drm_dma_handle_t * dmah) + { +- unsigned long addr; +- size_t sz; +- +- if (dmah->vaddr) { +- /* XXX - Is virt_to_page() legal for consistent mem? */ +- /* Unreserve */ +- for (addr = (unsigned long)dmah->vaddr, sz = dmah->size; +- sz > 0; addr += PAGE_SIZE, sz -= PAGE_SIZE) { +- ClearPageReserved(virt_to_page((void *)addr)); +- } ++ if (dmah->vaddr) + dma_free_coherent(&dev->pdev->dev, dmah->size, dmah->vaddr, + dmah->busaddr); +- } + } + + /** +-- +2.26.0 + |