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* [PATCH] x86/hyperv: Set pv_info.name to "Hyper-V"
@ 2019-10-15  9:29 Andrea Parri
  2019-10-15  9:39 ` Wei Liu
  0 siblings, 1 reply; 3+ messages in thread
From: Andrea Parri @ 2019-10-15  9:29 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,
	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:

  [    0.000138] Booting paravirtualized kernel on Hyper-V

Reported-by: Michael Kelley <mikelley@microsoft.com>
Signed-off-by: Andrea Parri <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 105844d542e5..c7d1801fa88b 100644
--- a/arch/x86/kernel/cpu/mshyperv.c
+++ b/arch/x86/kernel/cpu/mshyperv.c
@@ -154,6 +154,8 @@ static uint32_t  __init ms_hyperv_platform(void)
 	if (!boot_cpu_has(X86_FEATURE_HYPERVISOR))
 		return 0;
 
+	pv_info.name = "Hyper-V";
+
 	cpuid(HYPERV_CPUID_VENDOR_AND_MAX_FUNCTIONS,
 	      &eax, &hyp_signature[0], &hyp_signature[1], &hyp_signature[2]);
 
-- 
2.17.1


^ permalink raw reply	[flat|nested] 3+ messages in thread

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2019-10-15  9:29 [PATCH] x86/hyperv: Set pv_info.name to "Hyper-V" Andrea Parri
2019-10-15  9:39 ` Wei Liu
2019-10-15 10:25   ` Andrea Parri

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