0012-libxl-Fix-setting-invtsc-in-Xen-4.14.patch

From de6dcd12f817428e8ec90611b04c86d5ff5a2c47 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Marek=20Marczykowski-G=C3=B3recki?=
 <marmarek@invisiblethingslab.com>
Date: Wed, 13 Apr 2022 15:58:50 +0200
Subject: [PATCH] libxl: Fix setting invtsc in Xen 4.14
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Xen 4.14 overrides invtsc CPUID field with disable_migrate setting.
In later versions it has separate itsc config value and also should not
override explicit value anymore.

Signed-off-by: Marek Marczykowski-Górecki <marmarek@invisiblethingslab.com>
---
 src/libxl/libxl_conf.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/src/libxl/libxl_conf.c b/src/libxl/libxl_conf.c
index 39a97b0405..389b6a1411 100644
--- a/src/libxl/libxl_conf.c
+++ b/src/libxl/libxl_conf.c
@@ -516,6 +516,13 @@ libxlMakeDomBuildInfo(virDomainDef *def,
                                 hasHwVirt = true;
                                 continue;
                             }
+                            if (STREQ(def->cpu->features[i].name, "invtsc")) {
+                                /* Xen overrides invtsc with the value of
+                                 * disable_migrate - set
+                                 * disable_migrate to have invtsc enabled.
+                                 */
+                                libxl_defbool_set(&b_info->disable_migrate, true);
+                            }
 
                             g_snprintf(xlCPU,
                                        sizeof(xlCPU),
-- 
2.45.2