linux-kernel - [tip: x86/cleanups] x86/boot: Remove unused finalize_identity

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Date:   Wed, 18 Nov 2020 17:18:13 -0000
From:   "tip-bot2 for Arvind Sankar" <tip-bot2@...utronix.de>
To:     linux-tip-commits@...r.kernel.org
Cc:     Arvind Sankar <nivedita@...m.mit.edu>,
        Borislav Petkov <bp@...e.de>, x86@...nel.org,
        linux-kernel@...r.kernel.org
Subject: [tip: x86/cleanups] x86/boot: Remove unused finalize_identity_maps()

The following commit has been merged into the x86/cleanups branch of tip:

Commit-ID:     0ac317e89791b76055ef11b952625ef77a1d2eba
Gitweb:        https://git.kernel.org/tip/0ac317e89791b76055ef11b952625ef77a1d2eba
Author:        Arvind Sankar <nivedita@...m.mit.edu>
AuthorDate:    Mon, 05 Oct 2020 11:12:07 -04:00
Committer:     Borislav Petkov <bp@...e.de>
CommitterDate: Wed, 18 Nov 2020 16:04:23 +01:00

x86/boot: Remove unused finalize_identity_maps()

Commit

  8570978ea030 ("x86/boot/compressed/64: Don't pre-map memory in KASLR code")

removed all the references to finalize_identity_maps(), but neglected to
delete the actual function. Remove it.

Signed-off-by: Arvind Sankar <nivedita@...m.mit.edu>
Signed-off-by: Borislav Petkov <bp@...e.de>
Link: https://lkml.kernel.org/r/20201005151208.2212886-2-nivedita@alum.mit.edu
---
 arch/x86/boot/compressed/ident_map_64.c | 10 ----------
 1 file changed, 10 deletions(-)

diff --git a/arch/x86/boot/compressed/ident_map_64.c b/arch/x86/boot/compressed/ident_map_64.c
index a5e5db6..6bf2022 100644
--- a/arch/x86/boot/compressed/ident_map_64.c
+++ b/arch/x86/boot/compressed/ident_map_64.c
@@ -167,16 +167,6 @@ void initialize_identity_maps(void *rmode)
 	write_cr3(top_level_pgt);
 }
 
-/*
- * This switches the page tables to the new level4 that has been built
- * via calls to add_identity_map() above. If booted via startup_32(),
- * this is effectively a no-op.
- */
-void finalize_identity_maps(void)
-{
-	write_cr3(top_level_pgt);
-}
-
 static pte_t *split_large_pmd(struct x86_mapping_info *info,
 			      pmd_t *pmdp, unsigned long __address)
 {