[PATCH v2] x86/hyperv: Set pv_info.name to "Hyper-V"

* [PATCH v2] x86/hyperv: Set pv_info.name to "Hyper-V"
@ 2019-10-15 10:35 Andrea Parri
  2019-10-15 10:56 ` Wei Liu
                   ` (3 more replies)
  0 siblings, 4 replies; 7+ messages in thread
From: Andrea Parri @ 2019-10-15 10:35 UTC (permalink / raw)
  To: linux-kernel, linux-hyperv, x86
  Cc: K . Y . Srinivasan, Haiyang Zhang, Stephen Hemminger,
	Sasha Levin, Thomas Gleixner, Ingo Molnar, Borislav Petkov,
	H . Peter Anvin, Michael Kelley, Vitaly Kuznetsov, Dexuan Cui,
	Wei Liu, Andrea Parri

Michael reported that the x86/hyperv initialization code printed 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";
with this addition, the dmesg read:

  [    0.000172] Booting paravirtualized kernel on Hyper-V

Reported-by: Michael Kelley <mikelley@microsoft.com>
Signed-off-by: Andrea Parri <parri.andrea@gmail.com>
---
Changes since v1 ([1]):
  - move the setting of pv_info.name to ms_hyperv_init_platform() (Wei Liu)

[1] https://lkml.kernel.org/r/20191015092937.11244-1-parri.andrea@gmail.com

 arch/x86/kernel/cpu/mshyperv.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/arch/x86/kernel/cpu/mshyperv.c b/arch/x86/kernel/cpu/mshyperv.c
index 267daad8c0360..e7f0776e2a811 100644
--- a/arch/x86/kernel/cpu/mshyperv.c
+++ b/arch/x86/kernel/cpu/mshyperv.c
@@ -216,6 +216,8 @@ static void __init ms_hyperv_init_platform(void)
 	int hv_host_info_ecx;
 	int hv_host_info_edx;
 
+	pv_info.name = "Hyper-V";
+
 	/*
 	 * Extract the features and hints
 	 */
-- 
2.23.0


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