[tip: x86/urgent] x86/hyperv: Set pv_info.name to "Hyper-V"

[tip-bot2 for Andrea Parri]

The following commit has been merged into the x86/urgent branch of tip:

Commit-ID:     f7c0f50f1857c1cf013466fcea4dc98d116bf456
Gitweb:        https://git.kernel.org/tip/f7c0f50f1857c1cf013466fcea4dc98d116bf456
Author:        Andrea Parri <parri.andrea@xxxxxxxxx>
AuthorDate:    Tue, 15 Oct 2019 12:35:02 +02:00
Committer:     Thomas Gleixner <tglx@xxxxxxxxxxxxx>
CommitterDate: Fri, 18 Oct 2019 13:33:38 +02:00

x86/hyperv: Set pv_info.name to "Hyper-V"

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 <mikelley@xxxxxxxxxxxxx>
Signed-off-by: Andrea Parri <parri.andrea@xxxxxxxxx>
Signed-off-by: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
Reviewed-by: Wei Liu <wei.liu@xxxxxxxxxx>
Reviewed-by: Michael Kelley <mikelley@xxxxxxxxxxxxx>
Cc: YueHaibing <yuehaibing@xxxxxxxxxx>
Link: https://lkml.kernel.org/r/20191015103502.13156-1-parri.andrea@xxxxxxxxx


---
 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 267daad..c656d92 100644
--- a/arch/x86/kernel/cpu/mshyperv.c
+++ b/arch/x86/kernel/cpu/mshyperv.c
@@ -216,6 +216,10 @@ 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
 	 */