linux-kernel - [tip: x86/core] x86/entry: Make some entry symbols global

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Date:   Mon, 17 Oct 2022 14:53:46 -0000
From:   "tip-bot2 for Thomas Gleixner" <tip-bot2@...utronix.de>
To:     linux-tip-commits@...r.kernel.org
Cc:     Thomas Gleixner <tglx@...utronix.de>,
        "Peter Zijlstra (Intel)" <peterz@...radead.org>, x86@...nel.org,
        linux-kernel@...r.kernel.org
Subject: [tip: x86/core] x86/entry: Make some entry symbols global

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

Commit-ID:     c22cf380c79c4bb0e502b0343f57271b17626424
Gitweb:        https://git.kernel.org/tip/c22cf380c79c4bb0e502b0343f57271b17626424
Author:        Thomas Gleixner <tglx@...utronix.de>
AuthorDate:    Thu, 15 Sep 2022 13:11:21 +02:00
Committer:     Peter Zijlstra <peterz@...radead.org>
CommitterDate: Mon, 17 Oct 2022 16:41:12 +02:00

x86/entry: Make some entry symbols global

paranoid_entry(), error_entry() and xen_error_entry() have to be
exempted from call accounting by thunk patching because they are
before UNTRAIN_RET.

Expose them so they are available in the alternative code.

Signed-off-by: Thomas Gleixner <tglx@...utronix.de>
Signed-off-by: Peter Zijlstra (Intel) <peterz@...radead.org>
Link: https://lore.kernel.org/r/20220915111147.265598113@infradead.org
---
 arch/x86/entry/entry_64.S |  9 ++++++---
 1 file changed, 6 insertions(+), 3 deletions(-)

diff --git a/arch/x86/entry/entry_64.S b/arch/x86/entry/entry_64.S
index b24b84b..4cc0125 100644
--- a/arch/x86/entry/entry_64.S
+++ b/arch/x86/entry/entry_64.S
@@ -327,7 +327,8 @@ SYM_CODE_END(ret_from_fork)
 #endif
 .endm
 
-SYM_CODE_START_LOCAL(xen_error_entry)
+SYM_CODE_START(xen_error_entry)
+	ANNOTATE_NOENDBR
 	UNWIND_HINT_FUNC
 	PUSH_AND_CLEAR_REGS save_ret=1
 	ENCODE_FRAME_POINTER 8
@@ -906,7 +907,8 @@ SYM_CODE_END(xen_failsafe_callback)
  * R14 - old CR3
  * R15 - old SPEC_CTRL
  */
-SYM_CODE_START_LOCAL(paranoid_entry)
+SYM_CODE_START(paranoid_entry)
+	ANNOTATE_NOENDBR
 	UNWIND_HINT_FUNC
 	PUSH_AND_CLEAR_REGS save_ret=1
 	ENCODE_FRAME_POINTER 8
@@ -1041,7 +1043,8 @@ SYM_CODE_END(paranoid_exit)
 /*
  * Switch GS and CR3 if needed.
  */
-SYM_CODE_START_LOCAL(error_entry)
+SYM_CODE_START(error_entry)
+	ANNOTATE_NOENDBR
 	UNWIND_HINT_FUNC
 
 	PUSH_AND_CLEAR_REGS save_ret=1