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From:   Andrea Parri <parri.andrea@gmail.com>
To:     linux-kernel@vger.kernel.org, linux-hyperv@vger.kernel.org,
        x86@kernel.org
Cc:     "K . Y . Srinivasan" <kys@microsoft.com>,
        Haiyang Zhang <haiyangz@microsoft.com>,
        Stephen Hemminger <sthemmin@microsoft.com>,
        Sasha Levin <sashal@kernel.org>,
        Thomas Gleixner <tglx@linutronix.de>,
        Ingo Molnar <mingo@redhat.com>, Borislav Petkov <bp@alien8.de>,
        "H . Peter Anvin" <hpa@zytor.com>,
        Michael Kelley <mikelley@microsoft.com>,
        Vitaly Kuznetsov <vkuznets@redhat.com>,
        Dexuan Cui <decui@microsoft.com>,
        Andrea Parri <parri.andrea@gmail.com>
Subject: [PATCH] x86/hyperv: Set pv_info.name to "Hyper-V"
Date:   Tue, 15 Oct 2019 11:29:37 +0200
Message-Id: <20191015092937.11244-1-parri.andrea@gmail.com>
MIME-Version: 1.0
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Sender: linux-kernel-owner@vger.kernel.org
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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