---

yaml --- r: 356402 b: refs/heads/master c: 05d694e h: refs/heads/master v: v3
git-mirror · Jan 29, 2013 · 00f20fd · 00f20fd
1 parent ac50856
commit 00f20fd
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Showing 2 changed files with 10 additions and 2 deletions.
diff --git a/[refs] b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: f53d168c025f27d64417a56bf129dbb39d2e1189
+refs/heads/master: 05d694ea0daa2e442191a2128aaec78635823f08
diff --git a/trunk/arch/powerpc/kernel/process.c b/trunk/arch/powerpc/kernel/process.c
@@ -409,7 +409,7 @@ static inline int set_dabr(struct arch_hw_breakpoint *brk)
 
 static inline int set_dawr(struct arch_hw_breakpoint *brk)
 {
-	unsigned long dawr, dawrx;
+	unsigned long dawr, dawrx, mrd;
 
 	dawr = brk->address;
 
@@ -419,6 +419,14 @@ static inline int set_dawr(struct arch_hw_breakpoint *brk)
 		                   << (63 - 59); //* translate */
 	dawrx |= (brk->type & (HW_BRK_TYPE_PRIV_ALL)) \
 		                   >> 3; //* PRIM bits */
+	/* dawr length is stored in field MDR bits 48:53.  Matches range in
+	   doublewords (64 bits) baised by -1 eg. 0b000000=1DW and
+	   0b111111=64DW.
+	   brk->len is in bytes.
+	   This aligns up to double word size, shifts and does the bias.
+	*/
+	mrd = ((brk->len + 7) >> 3) - 1;
+	dawrx |= (mrd & 0x3f) << (63 - 53);
 
 	if (ppc_md.set_dawr)
 		return ppc_md.set_dawr(dawr, dawrx);