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2013 Mar 13
1
Fix unaligned accesses for SPARC
The nouveau driver makes a number of unaligned accesses via the ROM16(),
ROM32() and ROM64() macros which fault on SPARC (but would be transparently
handled by x86 hardware). Making use of get_unaligned() macro fixes the
problem for me.
diff --git a/drivers/gpu/drm/nouveau/nouveau_bios.h
b/drivers/gpu/drm/nouveau/nouveau_bios.h
index 7ccd28f..92031f6 100644
--- a/drivers/gpu/drm/nouveau...
2016 Jul 27
0
[PATCH] nouveau: bios pointers may be unaligned, use proper accessors
...rm/nouveau/nouveau_bios.h
+++ b/drm/nouveau/nouveau_bios.h
@@ -31,10 +31,8 @@
#define DCB_LOC_ON_CHIP 0
-#define ROM16(x) le16_to_cpu(*(u16 *)&(x))
-#define ROM32(x) le32_to_cpu(*(u32 *)&(x))
-#define ROM48(x) ({ u8 *p = &(x); (u64)ROM16(p[4]) << 32 | ROM32(p[0]); })
-#define ROM64(x) le64_to_cpu(*(u64 *)&(x))
+#define ROM16(x) get_unaligned_le16(&(x))
+#define ROM32(x) get_unaligned_le32(&(x))
#define ROMPTR(d,x) ({ \
struct nouveau_drm *drm = nouveau_drm((d)); \
ROM16(x) ? &drm->vbios.data[ROM16(x)] : NULL; \
diff --git a/drm/nouveau/nvkm/...
2016 Jul 07
19
[Bug 96836] New: Kernel unaligned access at TPC[105d9fb4] nvkm_instobj_wr32+0x14/0x20
https://bugs.freedesktop.org/show_bug.cgi?id=96836
Bug ID: 96836
Summary: Kernel unaligned access at TPC[105d9fb4]
nvkm_instobj_wr32+0x14/0x20 [nouveau]
Product: xorg
Version: unspecified
Hardware: SPARC
OS: Linux (All)
Status: NEW
Severity: normal
Priority: medium