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authorPingfan Liu <kernelfans@gmail.com>2019-07-16 16:40:24 +0800
committerThomas Gleixner <tglx@linutronix.de>2019-07-22 11:30:18 +0200
commit69732102426b1c55a257386841fb80ec1f425d32 (patch)
tree5b6a6361e1adb9719bbd55389769d352eda09890 /arch/x86/realmode
parent5f9e832c137075045d15cd6899ab0505cfb2ca4b (diff)
downloadlinux-69732102426b1c55a257386841fb80ec1f425d32.tar.bz2
x86/realmode: Remove trampoline_status
There is no reader of trampoline_status, it's only written. It turns out that after commit ce4b1b16502b ("x86/smpboot: Initialize secondary CPU only if master CPU will wait for it"), trampoline_status is not needed any more. Signed-off-by: Pingfan Liu <kernelfans@gmail.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Link: https://lkml.kernel.org/r/1563266424-3472-1-git-send-email-kernelfans@gmail.com
Diffstat (limited to 'arch/x86/realmode')
-rw-r--r--arch/x86/realmode/rm/header.S1
-rw-r--r--arch/x86/realmode/rm/trampoline_32.S3
-rw-r--r--arch/x86/realmode/rm/trampoline_64.S3
-rw-r--r--arch/x86/realmode/rm/trampoline_common.S4
4 files changed, 0 insertions, 11 deletions
diff --git a/arch/x86/realmode/rm/header.S b/arch/x86/realmode/rm/header.S
index 30b0d30d861a..6363761cc74c 100644
--- a/arch/x86/realmode/rm/header.S
+++ b/arch/x86/realmode/rm/header.S
@@ -19,7 +19,6 @@ GLOBAL(real_mode_header)
.long pa_ro_end
/* SMP trampoline */
.long pa_trampoline_start
- .long pa_trampoline_status
.long pa_trampoline_header
#ifdef CONFIG_X86_64
.long pa_trampoline_pgd;
diff --git a/arch/x86/realmode/rm/trampoline_32.S b/arch/x86/realmode/rm/trampoline_32.S
index 2dd866c9e21e..1868b158480d 100644
--- a/arch/x86/realmode/rm/trampoline_32.S
+++ b/arch/x86/realmode/rm/trampoline_32.S
@@ -41,9 +41,6 @@ ENTRY(trampoline_start)
movl tr_start, %eax # where we need to go
- movl $0xA5A5A5A5, trampoline_status
- # write marker for master knows we're running
-
/*
* GDT tables in non default location kernel can be beyond 16MB and
* lgdt will not be able to load the address as in real mode default
diff --git a/arch/x86/realmode/rm/trampoline_64.S b/arch/x86/realmode/rm/trampoline_64.S
index 24bb7598774e..aee2b45d83b8 100644
--- a/arch/x86/realmode/rm/trampoline_64.S
+++ b/arch/x86/realmode/rm/trampoline_64.S
@@ -49,9 +49,6 @@ ENTRY(trampoline_start)
mov %ax, %es
mov %ax, %ss
- movl $0xA5A5A5A5, trampoline_status
- # write marker for master knows we're running
-
# Setup stack
movl $rm_stack_end, %esp
diff --git a/arch/x86/realmode/rm/trampoline_common.S b/arch/x86/realmode/rm/trampoline_common.S
index 7c706772ab59..8d8208dcca24 100644
--- a/arch/x86/realmode/rm/trampoline_common.S
+++ b/arch/x86/realmode/rm/trampoline_common.S
@@ -2,7 +2,3 @@
.section ".rodata","a"
.balign 16
tr_idt: .fill 1, 6, 0
-
- .bss
- .balign 4
-GLOBAL(trampoline_status) .space 4