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authorLuke Browning <lukebr@linux.vnet.ibm.com>2008-04-28 17:35:56 +1000
committerJeremy Kerr <jk@ozlabs.org>2008-05-05 13:33:44 +1000
commitde1028927ae3487e2e450dacf50fbf32042aee18 (patch)
tree615b7c5fa3526ccf11b63be88c8978180df0bee8 /include/asm-powerpc
parentf3d69e0507f84903059d456c5d19f10b2df3ac69 (diff)
[POWERPC] spufs: handle faults while the context switch pending flag is set
Currently, page fault handlers don't issue a mfc restart if the context switch pending flag is set, which can leave us with a hanging DMA after a context restore. This patch introduces fault pending flag that is set by the fault handler and read by the context switch code, so that the latter can add the restart bit at the right spot, after it has successfuly saved the state of the mfc control register. Signed-off-by: Luke Browning <lukebr@linux.vnet.ibm.com> Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
Diffstat (limited to 'include/asm-powerpc')
-rw-r--r--include/asm-powerpc/spu.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/include/asm-powerpc/spu.h b/include/asm-powerpc/spu.h
index 882aa953968..6abead6e681 100644
--- a/include/asm-powerpc/spu.h
+++ b/include/asm-powerpc/spu.h
@@ -100,6 +100,7 @@
/* Flag indicating progress during context switch. */
#define SPU_CONTEXT_SWITCH_PENDING 0UL
+#define SPU_CONTEXT_FAULT_PENDING 1UL
struct spu_context;
struct spu_runqueue;