linux-kernel - [PATCH V4 27/50] x86: Remove the definition of SWAPGS

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Message-Id: <20211026143436.19071-2-jiangshanlai@gmail.com>
Date:   Tue, 26 Oct 2021 22:34:13 +0800
From:   Lai Jiangshan <jiangshanlai@...il.com>
To:     linux-kernel@...r.kernel.org
Cc:     x86@...nel.org, Lai Jiangshan <laijs@...ux.alibaba.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>, Juergen Gross <jgross@...e.com>,
        "Peter Zijlstra (Intel)" <peterz@...radead.org>
Subject: [PATCH V4 27/50] x86: Remove the definition of SWAPGS

From: Lai Jiangshan <laijs@...ux.alibaba.com>

There is no user of the pv-aware SWAPGS anymore.

Signed-off-by: Lai Jiangshan <laijs@...ux.alibaba.com>
---
 arch/x86/include/asm/irqflags.h | 8 --------
 1 file changed, 8 deletions(-)

diff --git a/arch/x86/include/asm/irqflags.h b/arch/x86/include/asm/irqflags.h
index c5ce9845c999..da41a80eb912 100644
--- a/arch/x86/include/asm/irqflags.h
+++ b/arch/x86/include/asm/irqflags.h
@@ -139,14 +139,6 @@ static __always_inline void arch_local_irq_restore(unsigned long flags)
 	if (!arch_irqs_disabled_flags(flags))
 		arch_local_irq_enable();
 }
-#else
-#ifdef CONFIG_X86_64
-#ifdef CONFIG_XEN_PV
-#define SWAPGS	ALTERNATIVE "swapgs", "", X86_FEATURE_XENPV
-#else
-#define SWAPGS	swapgs
-#endif
-#endif
 #endif /* !__ASSEMBLY__ */
 
 #endif
-- 
2.19.1.6.gb485710b