From: Szabolcs Nagy <nsz@port70.net>
Date: Thu, 9 May 2019 18:59:51 +0000 (+0000)
Subject: sys/prctl.h: add PR_SPEC_DISABLE_NOEXEC from linux v5.1
X-Git-Tag: v1.1.23~23
X-Git-Url: https://git.librecmc.org/?a=commitdiff_plain;h=c7081edcf838d7bb830819a7de35737b1dd9755d;p=oweals%2Fmusl.git

sys/prctl.h: add PR_SPEC_DISABLE_NOEXEC from linux v5.1

allows specifying that the speculative store bypass disable bit should
be cleared on exec. see

  linux commit 71368af9027f18fe5d1c6f372cfdff7e4bde8b48
  x86/speculation: Add PR_SPEC_DISABLE_NOEXEC
---

diff --git a/include/sys/prctl.h b/include/sys/prctl.h
index 9cc3a80e..07f0d73d 100644
--- a/include/sys/prctl.h
+++ b/include/sys/prctl.h
@@ -145,6 +145,7 @@ struct prctl_mm_map {
 #define PR_SPEC_ENABLE (1UL << 1)
 #define PR_SPEC_DISABLE (1UL << 2)
 #define PR_SPEC_FORCE_DISABLE (1UL << 3)
+#define PR_SPEC_DISABLE_NOEXEC (1UL << 4)
 
 #define PR_PAC_RESET_KEYS       54
 #define PR_PAC_APIAKEY (1UL << 0)