linux-kernel - [PATCH 07/15] hyperv: dedup cpuid definitions

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Date:   Tue, 20 Dec 2016 18:55:54 +0300
From:   Roman Kagan <rkagan@...tuozzo.com>
To:     Paolo Bonzini <pbonzini@...hat.com>,
        Radim Krčmář <rkrcmar@...hat.com>,
        "K. Y. Srinivasan" <kys@...rosoft.com>,
        Vitaly Kuznetsov <vkuznets@...hat.com>
CC:     Thomas Gleixner <tglx@...utronix.de>,
        Ingo Molnar <mingo@...hat.com>,
        "H. Peter Anvin" <hpa@...or.com>, <x86@...nel.org>,
        Haiyang Zhang <haiyangz@...rosoft.com>, <kvm@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>, <devel@...uxdriverproject.org>,
        "Denis V . Lunev" <den@...nvz.org>,
        Roman Kagan <rkagan@...tuozzo.com>
Subject: [PATCH 07/15] hyperv: dedup cpuid definitions

Use the definitions already present in the uapi header throughout the
guest driver, too.

Signed-off-by: Roman Kagan <rkagan@...tuozzo.com>
---
 drivers/hv/hyperv_vmbus.h | 19 -------------------
 drivers/hv/hv.c           |  6 +++---
 2 files changed, 3 insertions(+), 22 deletions(-)

diff --git a/drivers/hv/hyperv_vmbus.h b/drivers/hv/hyperv_vmbus.h
index 4fab154..9b0f1c9 100644
--- a/drivers/hv/hyperv_vmbus.h
+++ b/drivers/hv/hyperv_vmbus.h
@@ -39,25 +39,6 @@
  */
 #define HV_UTIL_NEGO_TIMEOUT 55
 
-/*
- * The below CPUID leaves are present if VersionAndFeatures.HypervisorPresent
- * is set by CPUID(HVCPUID_VERSION_FEATURES).
- */
-enum hv_cpuid_function {
-	HVCPUID_VERSION_FEATURES		= 0x00000001,
-	HVCPUID_VENDOR_MAXFUNCTION		= 0x40000000,
-	HVCPUID_INTERFACE			= 0x40000001,
-
-	/*
-	 * The remaining functions depend on the value of
-	 * HVCPUID_INTERFACE
-	 */
-	HVCPUID_VERSION			= 0x40000002,
-	HVCPUID_FEATURES			= 0x40000003,
-	HVCPUID_ENLIGHTENMENT_INFO	= 0x40000004,
-	HVCPUID_IMPLEMENTATION_LIMITS		= 0x40000005,
-};
-
 #define  HV_FEATURE_GUEST_CRASH_MSR_AVAILABLE   0x400
 
 #define HV_X64_MSR_CRASH_P0   0x40000100
diff --git a/drivers/hv/hv.c b/drivers/hv/hv.c
index b40c7d9..dddba07 100644
--- a/drivers/hv/hv.c
+++ b/drivers/hv/hv.c
@@ -69,17 +69,17 @@ static int query_hypervisor_info(void)
 	ebx = 0;
 	ecx = 0;
 	edx = 0;
-	op = HVCPUID_VENDOR_MAXFUNCTION;
+	op = HYPERV_CPUID_VENDOR_AND_MAX_FUNCTIONS;
 	cpuid(op, &eax, &ebx, &ecx, &edx);
 
 	max_leaf = eax;
 
-	if (max_leaf >= HVCPUID_VERSION) {
+	if (max_leaf >= HYPERV_CPUID_VERSION) {
 		eax = 0;
 		ebx = 0;
 		ecx = 0;
 		edx = 0;
-		op = HVCPUID_VERSION;
+		op = HYPERV_CPUID_VERSION;
 		cpuid(op, &eax, &ebx, &ecx, &edx);
 		host_info_eax = eax;
 		host_info_ebx = ebx;
-- 
2.9.3