X-Git-Url: http://demsky.eecs.uci.edu/git/?a=blobdiff_plain;f=include%2Fasm-blackfin%2Fentry.h;h=c4f721e0d00def673b14bf4febd92b342c477efb;hb=3988ba0708e98b4bafc9034aa476775520bee708;hp=562c6d3a3232ba21f7b46ba724864384af452991;hpb=8269cc4e2b0ddcdcb9e7f2034c464ef8613737a1;p=firefly-linux-kernel-4.4.55.git

diff --git a/include/asm-blackfin/entry.h b/include/asm-blackfin/entry.h
index 562c6d3a3232..c4f721e0d00d 100644
--- a/include/asm-blackfin/entry.h
+++ b/include/asm-blackfin/entry.h
@@ -17,6 +17,11 @@
 #define	PF_DTRACE_OFF	1
 #define	PF_DTRACE_BIT	5
 
+/*
+ * NOTE!  The single-stepping code assumes that all interrupt handlers
+ * start by saving SYSCFG on the stack with their first instruction.
+ */
+
 /* This one is used for exceptions, emulation, and NMI.  It doesn't push
    RETI and doesn't do cli.  */
 #define SAVE_ALL_SYS		save_context_no_interrupts