git: 9e0fe126714c - main - i386: Fix build and remove empty unused macro

From: Jessica Clarke <jrtc27_at_FreeBSD.org>
Date: Mon, 02 Feb 2026 17:46:00 UTC
The branch main has been updated by jrtc27:

URL: https://cgit.FreeBSD.org/src/commit/?id=9e0fe126714cc0b2045bec16fe8d06dbcd663144

commit 9e0fe126714cc0b2045bec16fe8d06dbcd663144
Author:     Jessica Clarke <jrtc27@FreeBSD.org>
AuthorDate: 2026-02-02 17:43:50 +0000
Commit:     Jessica Clarke <jrtc27@FreeBSD.org>
CommitDate: 2026-02-02 17:43:50 +0000

    i386: Fix build and remove empty unused macro
    
    When inlining the macro, reg was not substituted with the %ecx argument
    previously passed in. One of the definitions was also left behind as an
    empty macro.
    
    PR:             292883
    Fixes:          377c053a43f3 ("cpu_switch(): unconditionally wait on the blocked mutex transient")
    MFC after:      1 week
---
 sys/i386/i386/swtch.S | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/sys/i386/i386/swtch.S b/sys/i386/i386/swtch.S
index cb03c847fbc9..ad7c1d16c788 100644
--- a/sys/i386/i386/swtch.S
+++ b/sys/i386/i386/swtch.S
@@ -34,8 +34,6 @@
 
 #include "assym.inc"
 
-#define	BLOCK_SPIN(reg)							\
-
 /*****************************************************************************/
 /* Scheduling                                                                */
 /*****************************************************************************/
@@ -170,7 +168,7 @@ sw1:
 100:
 
 	lock
-	cmpxchgl	%eax,TD_LOCK(reg)
+	cmpxchgl	%eax,TD_LOCK(%ecx)
 	jne		101f
 	pause
 	jmp		100b