linux-kernel - [PATCH 5/5] x86/io: Remove REALLY_SLOW

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Message-ID: <20251126162018.5676-6-jgross@suse.com>
Date: Wed, 26 Nov 2025 17:20:18 +0100
From: Juergen Gross <jgross@...e.com>
To: linux-kernel@...r.kernel.org,
	x86@...nel.org
Cc: Juergen Gross <jgross@...e.com>,
	Thomas Gleixner <tglx@...utronix.de>,
	Ingo Molnar <mingo@...hat.com>,
	Borislav Petkov <bp@...en8.de>,
	Dave Hansen <dave.hansen@...ux.intel.com>,
	"H. Peter Anvin" <hpa@...or.com>
Subject: [PATCH 5/5] x86/io: Remove REALLY_SLOW_IO handling

As there is no user of REALLY_SLOW_IO left, remove the related handling
from arch/x86/include/asm/io.h.

Signed-off-by: Juergen Gross <jgross@...e.com>
---
 arch/x86/include/asm/io.h | 5 -----
 1 file changed, 5 deletions(-)

diff --git a/arch/x86/include/asm/io.h b/arch/x86/include/asm/io.h
index 0448575569b9..c4ddaaa1b81c 100644
--- a/arch/x86/include/asm/io.h
+++ b/arch/x86/include/asm/io.h
@@ -254,11 +254,6 @@ static inline void slow_down_io(void)
 		return;
 
 	native_io_delay();
-#ifdef REALLY_SLOW_IO
-	native_io_delay();
-	native_io_delay();
-	native_io_delay();
-#endif
 }
 
 #define BUILDIO(bwl, type)						\
-- 
2.51.0