Linux Virtualization - Dec 2015 - [PATCH 2/6] x86: Update vmware.c to use the common VMW_PORT macros

Updated the VMWARE_PORT macro to use the new VMW_PORT
macro.  Doing this instead of replacing all existing
instances of VMWARE_PORT to minimize code change.

Signed-off-by: Sinclair Yeh <syeh at vmware.com>
Reviewed-by: Thomas Hellstrom <thellstrom at vmware.com>
Reviewed-by: Alok N Kataria <akataria at vmware.com>
Cc: Thomas Gleixner <tglx at linutronix.de>
Cc: Ingo Molnar <mingo at redhat.com>
Cc: "H. Peter Anvin" <hpa at zytor.com>
Cc: pv-drivers at vmware.com
Cc: virtualization at lists.linux-foundation.org
Cc: linux-kernel at vger.kernel.org
Cc: Greg Kroah-Hartman <gregkh at linuxfoundation.org>

---

v2:
Instead of replacing all existing instances of VMWARE_PORT
with VMW_PORT, update VMWARE_PORT to use the new VMW_PORT.

v3:
Using updated VMWARE_PORT() macro, which needs hypervisor magic in the
parameter

v4:
Swapped the first and second parameters because VMW_PORT has
changed.
---
 arch/x86/kernel/cpu/vmware.c | 16 +++++++++-------
 1 file changed, 9 insertions(+), 7 deletions(-)

diff --git a/arch/x86/kernel/cpu/vmware.c b/arch/x86/kernel/cpu/vmware.c
index 628a059..67c429d 100644
--- a/arch/x86/kernel/cpu/vmware.c
+++ b/arch/x86/kernel/cpu/vmware.c
@@ -26,6 +26,7 @@
 #include <asm/div64.h>
 #include <asm/x86_init.h>
 #include <asm/hypervisor.h>
+#include <asm/vmware.h>
 
 #define CPUID_VMWARE_INFO_LEAF	0x40000000
 #define VMWARE_HYPERVISOR_MAGIC	0x564D5868
@@ -37,13 +38,14 @@
 #define VMWARE_PORT_CMD_LEGACY_X2APIC	3
 #define VMWARE_PORT_CMD_VCPU_RESERVED	31
 
-#define VMWARE_PORT(cmd, eax, ebx, ecx, edx)				\
-	__asm__("inl (%%dx)" :						\
-			"=a"(eax), "=c"(ecx), "=d"(edx),
"=b"(ebx) :	\
-			"0"(VMWARE_HYPERVISOR_MAGIC),			\
-			"1"(VMWARE_PORT_CMD_##cmd),			\
-			"2"(VMWARE_HYPERVISOR_PORT), "3"(UINT_MAX) :	\
-			"memory");
+#define VMWARE_PORT(cmd, eax, ebx, ecx, edx)				  \
+({									  \
+	unsigned long __si = 0, __di = 0;                                 \
+	VMW_PORT(VMWARE_PORT_CMD_##cmd, UINT_MAX, VMWARE_HYPERVISOR_PORT, \
+		 VMWARE_HYPERVISOR_MAGIC,                                 \
+		 eax, ebx, ecx, edx, __si, __di);                         \
+})
+
 
 static inline int __vmware_platform(void)
 {
-- 
1.9.1