linux-kernel - [PATCH V5 09/50] x86: Remove unused kernel_to_user_p4dp() and user_to_kernel

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Date:   Wed, 10 Nov 2021 19:56:55 +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>,
        Andrew Morton <akpm@...ux-foundation.org>,
        "Aneesh Kumar K.V" <aneesh.kumar@...ux.ibm.com>
Subject: [PATCH V5 09/50] x86: Remove unused kernel_to_user_p4dp() and user_to_kernel_p4dp()

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

kernel_to_user_p4dp() and user_to_kernel_p4dp() have no caller and can
be removed.

Signed-off-by: Lai Jiangshan <laijs@...ux.alibaba.com>
---
 arch/x86/include/asm/pgtable.h | 10 ----------
 1 file changed, 10 deletions(-)

diff --git a/arch/x86/include/asm/pgtable.h b/arch/x86/include/asm/pgtable.h
index 448cd01eb3ec..65542106464b 100644
--- a/arch/x86/include/asm/pgtable.h
+++ b/arch/x86/include/asm/pgtable.h
@@ -1200,16 +1200,6 @@ static inline pgd_t *user_to_kernel_pgdp(pgd_t *pgdp)
 {
 	return ptr_clear_bit(pgdp, PTI_PGTABLE_SWITCH_BIT);
 }
-
-static inline p4d_t *kernel_to_user_p4dp(p4d_t *p4dp)
-{
-	return ptr_set_bit(p4dp, PTI_PGTABLE_SWITCH_BIT);
-}
-
-static inline p4d_t *user_to_kernel_p4dp(p4d_t *p4dp)
-{
-	return ptr_clear_bit(p4dp, PTI_PGTABLE_SWITCH_BIT);
-}
 #endif /* CONFIG_PAGE_TABLE_ISOLATION */
 
 /*
-- 
2.19.1.6.gb485710b