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

From: Andrea Parri
Date: Tue Oct 15 2019 - 05:30:22 EST


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@xxxxxxxxxxxxx>
Signed-off-by: Andrea Parri <parri.andrea@xxxxxxxxx>
---
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