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Peter Anvin" , Andy Lutomirski , Alexandre Chartre , Peter Zijlstra , Jann Horn , Dave Hansen , linux-kernel@vger.kernel.org Subject: [PATCH V3 3/3] x86/entry: remove unused sync_regs() Date: Mon, 17 Aug 2020 14:23:55 +0800 Message-Id: <20200817062355.2884-4-jiangshanlai@gmail.com> X-Mailer: git-send-email 2.19.1.6.gb485710b In-Reply-To: <20200817062355.2884-1-jiangshanlai@gmail.com> References: <20200817062355.2884-1-jiangshanlai@gmail.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit To: unlisted-recipients:; (no To-header on input) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Lai Jiangshan No more users. Signed-off-by: Lai Jiangshan --- arch/x86/include/asm/traps.h | 1 - arch/x86/kernel/traps.c | 13 ------------- 2 files changed, 14 deletions(-) diff --git a/arch/x86/include/asm/traps.h b/arch/x86/include/asm/traps.h index 714b1a30e7b0..52cd29bde1d0 100644 --- a/arch/x86/include/asm/traps.h +++ b/arch/x86/include/asm/traps.h @@ -10,7 +10,6 @@ #include /* TRAP_TRACE, ... */ #ifdef CONFIG_X86_64 -asmlinkage __visible notrace struct pt_regs *sync_regs(struct pt_regs *eregs); asmlinkage __visible notrace struct bad_iret_stack *fixup_bad_iret(struct bad_iret_stack *s); void __init trap_init(void); diff --git a/arch/x86/kernel/traps.c b/arch/x86/kernel/traps.c index 852de6f1bf88..ebea1c3e473b 100644 --- a/arch/x86/kernel/traps.c +++ b/arch/x86/kernel/traps.c @@ -660,19 +660,6 @@ DEFINE_IDTENTRY_RAW(exc_int3) } #ifdef CONFIG_X86_64 -/* - * Help handler running on a per-cpu (IST or entry trampoline) stack - * to switch to the normal thread stack if the interrupted code was in - * user mode. The actual stack switch is done in entry_64.S - */ -asmlinkage __visible noinstr struct pt_regs *sync_regs(struct pt_regs *eregs) -{ - struct pt_regs *regs = (struct pt_regs *)this_cpu_read(cpu_current_top_of_stack) - 1; - if (regs != eregs) - *regs = *eregs; - return regs; -} - struct bad_iret_stack { void *error_entry_ret; struct pt_regs regs; -- 2.19.1.6.gb485710b