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From:   Joerg Roedel <joro@8bytes.org>
To:     Thomas Gleixner <tglx@linutronix.de>,
        Ingo Molnar <mingo@kernel.org>,
        "H . Peter Anvin" <hpa@zytor.com>
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        Linus Torvalds <torvalds@linux-foundation.org>,
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        Peter Zijlstra <peterz@infradead.org>,
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        Brian Gerst <brgerst@gmail.com>,
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        Waiman Long <llong@redhat.com>, Pavel Machek <pavel@ucw.cz>,
        "David H . Gutteridge" <dhgutteridge@sympatico.ca>,
        jroedel@suse.de, joro@8bytes.org
Subject: [PATCH 02/35] x86/entry/32: Rename TSS_sysenter_sp0 to TSS_entry_stack
Date:   Mon, 16 Apr 2018 17:24:50 +0200
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From: Joerg Roedel <jroedel@suse.de>

The stack address doesn't need to be stored in tss.sp0 if
we switch manually like on sysenter. Rename the offset so
that it still makes sense when we change its location.

We will also use this stack for all kernel-entry points, not
just sysenter. Reflect that in the name as well.

Signed-off-by: Joerg Roedel <jroedel@suse.de>
---
 arch/x86/entry/entry_32.S        | 2 +-
 arch/x86/kernel/asm-offsets_32.c | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/arch/x86/entry/entry_32.S b/arch/x86/entry/entry_32.S
index bef8e2b..ec288be 100644
--- a/arch/x86/entry/entry_32.S
+++ b/arch/x86/entry/entry_32.S
@@ -412,7 +412,7 @@ ENTRY(xen_sysenter_target)
  * 0(%ebp) arg6
  */
 ENTRY(entry_SYSENTER_32)
-	movl	TSS_sysenter_sp0(%esp), %esp
+	movl	TSS_entry_stack(%esp), %esp
 .Lsysenter_past_esp:
 	pushl	$__USER_DS		/* pt_regs->ss */
 	pushl	%ebp			/* pt_regs->sp (stashed in bp) */
diff --git a/arch/x86/kernel/asm-offsets_32.c b/arch/x86/kernel/asm-offsets_32.c
index f91ba53..c6ac48f 100644
--- a/arch/x86/kernel/asm-offsets_32.c
+++ b/arch/x86/kernel/asm-offsets_32.c
@@ -47,7 +47,7 @@ void foo(void)
 	BLANK();
 
 	/* Offset from the sysenter stack to tss.sp0 */
-	DEFINE(TSS_sysenter_sp0, offsetof(struct cpu_entry_area, tss.x86_tss.sp0) -
+	DEFINE(TSS_entry_stack, offsetof(struct cpu_entry_area, tss.x86_tss.sp0) -
 	       offsetofend(struct cpu_entry_area, entry_stack_page.stack));
 
 #ifdef CONFIG_CC_STACKPROTECTOR
-- 
2.7.4