diff options
Diffstat (limited to 'debian/patches-rt/0058-drm-nouveau-device-Replace-io_mapping_map_atomic_wc.patch')
| -rw-r--r-- | debian/patches-rt/0058-drm-nouveau-device-Replace-io_mapping_map_atomic_wc.patch | 54 |
1 files changed, 54 insertions, 0 deletions
diff --git a/debian/patches-rt/0058-drm-nouveau-device-Replace-io_mapping_map_atomic_wc.patch b/debian/patches-rt/0058-drm-nouveau-device-Replace-io_mapping_map_atomic_wc.patch new file mode 100644 index 000000000..1fbd4e19c --- /dev/null +++ b/debian/patches-rt/0058-drm-nouveau-device-Replace-io_mapping_map_atomic_wc.patch @@ -0,0 +1,54 @@ +From fa246d15bcd167ad99886a776912530c0ca8d6a7 Mon Sep 17 00:00:00 2001 +From: Thomas Gleixner <tglx@linutronix.de> +Date: Tue, 3 Nov 2020 10:27:47 +0100 +Subject: [PATCH 058/323] drm/nouveau/device: Replace + io_mapping_map_atomic_wc() +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.10/older/patches-5.10.204-rt100.tar.xz + +Neither fbmem_peek() nor fbmem_poke() require to disable pagefaults and +preemption as a side effect of io_mapping_map_atomic_wc(). + +Use io_mapping_map_local_wc() instead. + +Signed-off-by: Thomas Gleixner <tglx@linutronix.de> +Cc: Ben Skeggs <bskeggs@redhat.com> +Cc: David Airlie <airlied@linux.ie> +Cc: Daniel Vetter <daniel@ffwll.ch> +Cc: dri-devel@lists.freedesktop.org +Cc: nouveau@lists.freedesktop.org +Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> +--- + drivers/gpu/drm/nouveau/nvkm/subdev/devinit/fbmem.h | 8 ++++---- + 1 file changed, 4 insertions(+), 4 deletions(-) + +diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/devinit/fbmem.h b/drivers/gpu/drm/nouveau/nvkm/subdev/devinit/fbmem.h +index 6c5bbff12eb4..411f91ee20fa 100644 +--- a/drivers/gpu/drm/nouveau/nvkm/subdev/devinit/fbmem.h ++++ b/drivers/gpu/drm/nouveau/nvkm/subdev/devinit/fbmem.h +@@ -60,19 +60,19 @@ fbmem_fini(struct io_mapping *fb) + static inline u32 + fbmem_peek(struct io_mapping *fb, u32 off) + { +- u8 __iomem *p = io_mapping_map_atomic_wc(fb, off & PAGE_MASK); ++ u8 __iomem *p = io_mapping_map_local_wc(fb, off & PAGE_MASK); + u32 val = ioread32(p + (off & ~PAGE_MASK)); +- io_mapping_unmap_atomic(p); ++ io_mapping_unmap_local(p); + return val; + } + + static inline void + fbmem_poke(struct io_mapping *fb, u32 off, u32 val) + { +- u8 __iomem *p = io_mapping_map_atomic_wc(fb, off & PAGE_MASK); ++ u8 __iomem *p = io_mapping_map_local_wc(fb, off & PAGE_MASK); + iowrite32(val, p + (off & ~PAGE_MASK)); + wmb(); +- io_mapping_unmap_atomic(p); ++ io_mapping_unmap_local(p); + } + + static inline bool +-- +2.43.0 + |