X-Git-Url: http://repo.macrolet.net/gitweb/?a=blobdiff_plain;f=src%2Fruntime%2Flinux-os.h;h=6f1003cf8dd7270e2ebee82d64280343db588f9b;hb=5f0bd05a15aaf93f46baf9b8aa3e9b0bfbca26ab;hp=f1a84e9b44024736584f0f2dcdc486aa534ab2c9;hpb=619189958917e80786d5bb2efa4dc38d908d2553;p=sbcl.git

diff --git a/src/runtime/linux-os.h b/src/runtime/linux-os.h
index f1a84e9..6f1003c 100644
--- a/src/runtime/linux-os.h
+++ b/src/runtime/linux-os.h
@@ -39,4 +39,8 @@ typedef int os_vm_prot_t;
 
 #define SIG_MEMORY_FAULT SIGSEGV
 
+/* Note that this must be higher than the highest numbered
+ * synchronously generated signal that we handle (that is SIGSEGV),
+ * due to Linux signal handling pecularities. See thread "Signal
+ * delivery order" from 2009-03-14 on kernel-devel@vger.kernel.org. */
 #define SIG_STOP_FOR_GC (SIGUSR2)