# \[PATCH AUTOSEL 5.3 89/99\] x86/hyperv: Set pv\_info.name to "Hyper-V"

- From: Sasha Levin \<sashal@kernel.org\>
- Date: 2019-10-26 13:18:47 
- List: linux-hyperv
- Page: https://ratatoskr.run/linux-hyperv/2019/10/5756833
- Thread: https://ratatoskr.run/stable/2019/10/5757019/t.md

```text
From: Andrea Parri <parri.andrea@gmail.com>

[ Upstream commit f7c0f50f1857c1cf013466fcea4dc98d116bf456 ]

Michael reported that the x86/hyperv initialization code prints the
following dmesg when running in a VM on Hyper-V:

  [    0.000738] Booting paravirtualized kernel on bare hardware

Let the x86/hyperv initialization code set pv_info.name to "Hyper-V" so
dmesg reports correctly:

  [    0.000172] Booting paravirtualized kernel on Hyper-V

[ tglx: Folded build fix provided by Yue ]

Reported-by: Michael Kelley <redacted>
Signed-off-by: Andrea Parri <parri.andrea@gmail.com>
Signed-off-by: Thomas Gleixner <redacted>
Reviewed-by: Wei Liu <wei.liu@kernel.org>
Reviewed-by: Michael Kelley <redacted>
Cc: YueHaibing <redacted>
Link: https://lkml.kernel.org/r/20191015103502.13156-1-parri.andrea@gmail.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 arch/x86/kernel/cpu/mshyperv.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/arch/x86/kernel/cpu/mshyperv.c b/arch/x86/kernel/cpu/mshyperv.c
index 062f77279ce3b..b3f164bf8eefa 100644
--- a/arch/x86/kernel/cpu/mshyperv.c
+++ b/arch/x86/kernel/cpu/mshyperv.c
@@ -215,6 +215,10 @@ static void __init ms_hyperv_init_platform(void)
 	int hv_host_info_ecx;
 	int hv_host_info_edx;
 
+#ifdef CONFIG_PARAVIRT
+	pv_info.name = "Hyper-V";
+#endif
+
 	/*
 	 * Extract the features and hints
 	 */
-- 
2.20.1

```