linux-kernel - [PATCH 1/1] x86/hyperv: Output host build info as normal Windows version number

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Message-Id: <1646767364-2234-1-git-send-email-mikelley@microsoft.com>
Date:   Tue,  8 Mar 2022 11:22:44 -0800
From:   Michael Kelley <mikelley@...rosoft.com>
To:     kys@...rosoft.com, haiyangz@...rosoft.com, sthemmin@...rosoft.com,
        wei.liu@...nel.org, tglx@...utronix.de, mingo@...hat.com,
        bp@...en8.de, dave.hansen@...ux.intel.com, x86@...nel.org,
        hpa@...or.com, linux-kernel@...r.kernel.org,
        linux-hyperv@...r.kernel.org
Cc:     mikelley@...rosoft.com
Subject: [PATCH 1/1] x86/hyperv: Output host build info as normal Windows version number

Hyper-V provides host version number information that is output in
text form by a Linux guest when it boots. For whatever reason, the
formatting has historically been non-standard. Change it to output
in normal Windows version format for better readability.

Similar code for ARM64 guests already outputs in normal Windows
version format.

Signed-off-by: Michael Kelley <mikelley@...rosoft.com>
---
 arch/x86/kernel/cpu/mshyperv.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/arch/x86/kernel/cpu/mshyperv.c b/arch/x86/kernel/cpu/mshyperv.c
index 5a99f99..6c4b6c6 100644
--- a/arch/x86/kernel/cpu/mshyperv.c
+++ b/arch/x86/kernel/cpu/mshyperv.c
@@ -309,10 +309,10 @@ static void __init ms_hyperv_init_platform(void)
 		hv_host_info_ecx = cpuid_ecx(HYPERV_CPUID_VERSION);
 		hv_host_info_edx = cpuid_edx(HYPERV_CPUID_VERSION);
 
-		pr_info("Hyper-V Host Build:%d-%d.%d-%d-%d.%d\n",
-			hv_host_info_eax, hv_host_info_ebx >> 16,
-			hv_host_info_ebx & 0xFFFF, hv_host_info_ecx,
-			hv_host_info_edx >> 24, hv_host_info_edx & 0xFFFFFF);
+		pr_info("Hyper-V: Host Build %d.%d.%d.%d-%d-%d\n",
+			hv_host_info_ebx >> 16, hv_host_info_ebx & 0xFFFF,
+			hv_host_info_eax, hv_host_info_edx & 0xFFFFFF,
+			hv_host_info_ecx, hv_host_info_edx >> 24);
 	}
 
 	if (ms_hyperv.features & HV_ACCESS_FREQUENCY_MSRS &&
-- 
1.8.3.1