From: "Xin Li (Intel)" <xin@zytor.com>
To: linux-kernel@vger.kernel.org, xen-devel@lists.xenproject.org,
linux-arch@vger.kernel.org
Cc: tglx@linutronix.de, mingo@redhat.com, bp@alien8.de,
dave.hansen@linux.intel.com, x86@kernel.org, hpa@zytor.com,
jgross@suse.com, boris.ostrovsky@oracle.com, arnd@arndb.de
Subject: [PATCH v3 1/1] x86: Rename __{start,end}_init_task to __{start,end}_init_stack
Date: Fri, 22 Mar 2024 01:16:16 -0700 [thread overview]
Message-ID: <20240322081616.3346181-1-xin@zytor.com> (raw)
The stack of a task has been separated from the memory of a task_struct
struture for a long time on x86, as a result __{start,end}_init_task no
longer mark the start and end of the init_task structure, but its stack
only.
Rename __{start,end}_init_task to __{start,end}_init_stack.
Note other architectures are not affected because __{start,end}_init_task
are used on x86 only.
Reviewed-by: Juergen Gross <jgross@suse.com>
Signed-off-by: Xin Li (Intel) <xin@zytor.com>
---
Change since v2:
* Rebase to the latest tip master branch.
Change since v1:
* Revert an accident insane change, init_task to init_stack (Jürgen Groß).
---
arch/x86/kernel/vmlinux.lds.S | 2 +-
include/asm-generic/vmlinux.lds.h | 6 +++---
2 files changed, 4 insertions(+), 4 deletions(-)
diff --git a/arch/x86/kernel/vmlinux.lds.S b/arch/x86/kernel/vmlinux.lds.S
index d430880175f2..3509afc6a672 100644
--- a/arch/x86/kernel/vmlinux.lds.S
+++ b/arch/x86/kernel/vmlinux.lds.S
@@ -168,7 +168,7 @@ SECTIONS
INIT_TASK_DATA(THREAD_SIZE)
/* equivalent to task_pt_regs(&init_task) */
- __top_init_kernel_stack = __end_init_task - TOP_OF_KERNEL_STACK_PADDING - PTREGS_SIZE;
+ __top_init_kernel_stack = __end_init_stack - TOP_OF_KERNEL_STACK_PADDING - PTREGS_SIZE;
#ifdef CONFIG_X86_32
/* 32 bit has nosave before _edata */
diff --git a/include/asm-generic/vmlinux.lds.h b/include/asm-generic/vmlinux.lds.h
index cb46306d8305..9752eb420ffa 100644
--- a/include/asm-generic/vmlinux.lds.h
+++ b/include/asm-generic/vmlinux.lds.h
@@ -399,13 +399,13 @@
#define INIT_TASK_DATA(align) \
. = ALIGN(align); \
- __start_init_task = .; \
+ __start_init_stack = .; \
init_thread_union = .; \
init_stack = .; \
KEEP(*(.data..init_task)) \
KEEP(*(.data..init_thread_info)) \
- . = __start_init_task + THREAD_SIZE; \
- __end_init_task = .;
+ . = __start_init_stack + THREAD_SIZE; \
+ __end_init_stack = .;
#define JUMP_TABLE_DATA \
. = ALIGN(8); \
base-commit: 93387dba36cc9033724d8b874a5cf6779ef084ab
--
2.44.0
reply other threads:[~2024-03-22 8:17 UTC|newest]
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