>From 79409d2a038e0e738ca65ca2b6d9e352c69c6432 Mon Sep 17 00:00:00 2001
From: Szabolcs Nagy <nsz@port70.net>
Date: Sun, 19 Dec 2021 20:55:06 +0000
Subject: [PATCH 11/20] sys/prctl.h: add PR_SPEC_L1D_FLUSH from linux v5.15

New argument for PR_{GET,SET}_SPECULATION_CTRL prctl command, see

  linux commit e893bb1bb4d2eb635eba61e5d9c5135d96855773
  x86, prctl: Hook L1D flushing in via prctl
---
 include/sys/prctl.h | 1 +
 1 file changed, 1 insertion(+)

diff --git a/include/sys/prctl.h b/include/sys/prctl.h
index a0c2436e..d323c0a9 100644
--- a/include/sys/prctl.h
+++ b/include/sys/prctl.h
@@ -140,6 +140,7 @@ struct prctl_mm_map {
 #define PR_SET_SPECULATION_CTRL 53
 #define PR_SPEC_STORE_BYPASS 0
 #define PR_SPEC_INDIRECT_BRANCH 1
+#define PR_SPEC_L1D_FLUSH 2
 #define PR_SPEC_NOT_AFFECTED 0
 #define PR_SPEC_PRCTL (1UL << 0)
 #define PR_SPEC_ENABLE (1UL << 1)
-- 
2.35.1