From: Alex Shi <alex.shi@linux.alibaba.com>
To: unlisted-recipients:; (no To-header on input)
Cc: Thomas Gleixner <tglx@linutronix.de>,
Ingo Molnar <mingo@redhat.com>, Borislav Petkov <bp@alien8.de>,
"H. Peter Anvin" <hpa@zytor.com>,
x86@kernel.org, Andy Lutomirski <luto@kernel.org>,
Rik van Riel <riel@surriel.com>,
Dave Hansen <dave.hansen@intel.com>,
Waiman Long <longman@redhat.com>,
Marcelo Tosatti <mtosatti@redhat.com>,
linux-kernel@vger.kernel.org
Subject: [PATCH] x86/iperm: remove unused pointers
Date: Tue, 21 Jan 2020 16:40:54 +0800 [thread overview]
Message-ID: <1579596054-254032-1-git-send-email-alex.shi@linux.alibaba.com> (raw)
No one use the prev/next pointers in its function after commit 22fe5b0439dd
("x86/ioperm: Move TSS bitmap update to exit to user work"). So better to
remove them.
Signed-off-by: Alex Shi <alex.shi@linux.alibaba.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Borislav Petkov <bp@alien8.de>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: x86@kernel.org
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Rik van Riel <riel@surriel.com>
Cc: Dave Hansen <dave.hansen@intel.com>
Cc: Waiman Long <longman@redhat.com>
Cc: Marcelo Tosatti <mtosatti@redhat.com>
Cc: linux-kernel@vger.kernel.org
---
arch/x86/kernel/process.c | 4 ----
1 file changed, 4 deletions(-)
diff --git a/arch/x86/kernel/process.c b/arch/x86/kernel/process.c
index 61e93a318983..839b5244e3b7 100644
--- a/arch/x86/kernel/process.c
+++ b/arch/x86/kernel/process.c
@@ -615,12 +615,8 @@ void speculation_ctrl_update_current(void)
void __switch_to_xtra(struct task_struct *prev_p, struct task_struct *next_p)
{
- struct thread_struct *prev, *next;
unsigned long tifp, tifn;
- prev = &prev_p->thread;
- next = &next_p->thread;
-
tifn = READ_ONCE(task_thread_info(next_p)->flags);
tifp = READ_ONCE(task_thread_info(prev_p)->flags);
--
1.8.3.1
next reply other threads:[~2020-01-21 8:41 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-01-21 8:40 Alex Shi [this message]
2020-01-21 14:16 ` [PATCH] x86/iperm: remove unused pointers Waiman Long
2020-01-22 13:16 ` Borislav Petkov
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