[PATCH 07/13] x86/paravirt: Simplify ____PVOP_CALL()

[Josh Poimboeuf]

Remove the inline asm duplication in ____PVOP_CALL().

Also add 'IS_ENABLED(CONFIG_X86_32)' to the return variable logic,
making the code clearer and rendering the comment unnecessary.

Signed-off-by: Josh Poimboeuf <jpoimboe@xxxxxxxxxx>
---
 arch/x86/include/asm/paravirt_types.h | 36 +++++++++++++----------------------
 1 file changed, 13 insertions(+), 23 deletions(-)

diff --git a/arch/x86/include/asm/paravirt_types.h b/arch/x86/include/asm/paravirt_types.h
index ab7aabe6b668..01f9e10983c1 100644
--- a/arch/x86/include/asm/paravirt_types.h
+++ b/arch/x86/include/asm/paravirt_types.h
@@ -529,29 +529,19 @@ int paravirt_disable_iospace(void);
 		rettype __ret;						\
 		PVOP_CALL_ARGS;						\
 		PVOP_TEST_NULL(op);					\
-		/* This is 32-bit specific, but is okay in 64-bit */	\
-		/* since this condition will never hold */		\
-		if (sizeof(rettype) > sizeof(unsigned long)) {		\
-			asm volatile(pre				\
-				     paravirt_alt(PARAVIRT_CALL)	\
-				     post				\
-				     : call_clbr, ASM_CALL_CONSTRAINT	\
-				     : paravirt_type(op),		\
-				       paravirt_clobber(clbr),		\
-				       ##__VA_ARGS__			\
-				     : "memory", "cc" extra_clbr);	\
-			__ret = (rettype)((((u64)__edx) << 32) | __eax); \
-		} else {						\
-			asm volatile(pre				\
-				     paravirt_alt(PARAVIRT_CALL)	\
-				     post				\
-				     : call_clbr, ASM_CALL_CONSTRAINT	\
-				     : paravirt_type(op),		\
-				       paravirt_clobber(clbr),		\
-				       ##__VA_ARGS__			\
-				     : "memory", "cc" extra_clbr);	\
-			__ret = (rettype)(__eax & PVOP_RETMASK(rettype));	\
-		}							\
+		asm volatile(pre					\
+			     paravirt_alt(PARAVIRT_CALL)		\
+			     post					\
+			     : call_clbr, ASM_CALL_CONSTRAINT		\
+			     : paravirt_type(op),			\
+			       paravirt_clobber(clbr),			\
+			       ##__VA_ARGS__				\
+			     : "memory", "cc" extra_clbr);		\
+		if (IS_ENABLED(CONFIG_X86_32) &&			\
+		    sizeof(rettype) > sizeof(unsigned long))		\
+			__ret = (rettype)((((u64)__edx) << 32) | __eax);\
+		else							\
+			__ret = (rettype)(__eax & PVOP_RETMASK(rettype));\
 		__ret;							\
 	})
 
-- 
2.13.6