linux-kernel - [PATCH v4 2/2] xen/x86: Drop mode-selecting ifdefs in startup

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Date:	Fri, 26 Feb 2016 14:02:37 -0500
From:	Boris Ostrovsky <boris.ostrovsky@...cle.com>
To:	konrad.wilk@...cle.com, david.vrabel@...rix.com
Cc:	xen-devel@...ts.xenproject.org, linux-kernel@...r.kernel.org,
	mcgrof@...nel.org, brgerst@...il.com, andrew.cooper3@...rix.com,
	roger.pau@...rix.com, Boris Ostrovsky <boris.ostrovsky@...cle.com>
Subject: [PATCH v4 2/2] xen/x86: Drop mode-selecting ifdefs in startup_xen()

Use asm/asm.h macros instead.

Signed-off-by: Boris Ostrovsky <boris.ostrovsky@...cle.com>
---
 arch/x86/xen/xen-head.S | 10 +++-------
 1 file changed, 3 insertions(+), 7 deletions(-)

diff --git a/arch/x86/xen/xen-head.S b/arch/x86/xen/xen-head.S
index 5c63d2d..de93b20 100644
--- a/arch/x86/xen/xen-head.S
+++ b/arch/x86/xen/xen-head.S
@@ -47,13 +47,9 @@ ENTRY(startup_xen)
 	shr $__ASM_SEL(2, 3), %_ASM_CX
 	rep __ASM_SIZE(stos)
 
-#ifdef CONFIG_X86_32
-	mov %esi,xen_start_info
-	mov $init_thread_union+THREAD_SIZE,%esp
-#else
-	mov %rsi,xen_start_info
-	mov $init_thread_union+THREAD_SIZE,%rsp
-#endif
+	mov %_ASM_SI, xen_start_info
+	mov $init_thread_union+THREAD_SIZE, %_ASM_SP
+
 	jmp xen_start_kernel
 
 	__FINIT
-- 
2.1.0