From: Brian Gerst <brgerst@gmail.com>
To: linux-kernel@vger.kernel.org, x86@kernel.org
Cc: Ingo Molnar <mingo@kernel.org>,
Thomas Gleixner <tglx@linutronix.de>,
Borislav Petkov <bp@alien8.de>, "H . Peter Anvin" <hpa@zytor.com>,
Uros Bizjak <ubizjak@gmail.com>,
David.Laight@aculab.com, Brian Gerst <brgerst@gmail.com>
Subject: [PATCH v4 15/16] percpu: Remove __per_cpu_load
Date: Fri, 22 Mar 2024 12:52:32 -0400 [thread overview]
Message-ID: <20240322165233.71698-16-brgerst@gmail.com> (raw)
In-Reply-To: <20240322165233.71698-1-brgerst@gmail.com>
__per_cpu_load is now always equal to __per_cpu_start.
Signed-off-by: Brian Gerst <brgerst@gmail.com>
---
include/asm-generic/sections.h | 2 +-
include/asm-generic/vmlinux.lds.h | 1 -
mm/percpu.c | 4 ++--
3 files changed, 3 insertions(+), 4 deletions(-)
diff --git a/include/asm-generic/sections.h b/include/asm-generic/sections.h
index c768de6f19a9..0755bc39b0d8 100644
--- a/include/asm-generic/sections.h
+++ b/include/asm-generic/sections.h
@@ -39,7 +39,7 @@ extern char __init_begin[], __init_end[];
extern char _sinittext[], _einittext[];
extern char __start_ro_after_init[], __end_ro_after_init[];
extern char _end[];
-extern char __per_cpu_load[], __per_cpu_start[], __per_cpu_end[];
+extern char __per_cpu_start[], __per_cpu_end[];
extern char __kprobes_text_start[], __kprobes_text_end[];
extern char __entry_text_start[], __entry_text_end[];
extern char __start_rodata[], __end_rodata[];
diff --git a/include/asm-generic/vmlinux.lds.h b/include/asm-generic/vmlinux.lds.h
index 430b2ed2aa58..a67452ea94d3 100644
--- a/include/asm-generic/vmlinux.lds.h
+++ b/include/asm-generic/vmlinux.lds.h
@@ -1052,7 +1052,6 @@
#define PERCPU_SECTION(cacheline) \
. = ALIGN(PAGE_SIZE); \
.data..percpu : AT(ADDR(.data..percpu) - LOAD_OFFSET) { \
- __per_cpu_load = .; \
PERCPU_INPUT(cacheline) \
}
diff --git a/mm/percpu.c b/mm/percpu.c
index 4e11fc1e6def..a584b5a78f72 100644
--- a/mm/percpu.c
+++ b/mm/percpu.c
@@ -3153,7 +3153,7 @@ int __init pcpu_embed_first_chunk(size_t reserved_size, size_t dyn_size,
continue;
}
/* copy and return the unused part */
- memcpy(ptr, __per_cpu_load, ai->static_size);
+ memcpy(ptr, __per_cpu_start, ai->static_size);
pcpu_fc_free(ptr + size_sum, ai->unit_size - size_sum);
}
}
@@ -3336,7 +3336,7 @@ int __init pcpu_page_first_chunk(size_t reserved_size, pcpu_fc_cpu_to_node_fn_t
flush_cache_vmap_early(unit_addr, unit_addr + ai->unit_size);
/* copy static data */
- memcpy((void *)unit_addr, __per_cpu_load, ai->static_size);
+ memcpy((void *)unit_addr, __per_cpu_start, ai->static_size);
}
/* we're ready, commit */
--
2.44.0
next prev parent reply other threads:[~2024-03-22 16:53 UTC|newest]
Thread overview: 42+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-03-22 16:52 [PATCH v4 00/16] x86-64: Stack protector and percpu improvements Brian Gerst
2024-03-22 16:52 ` [PATCH v4 01/16] x86/stackprotector/32: Remove stack protector test script Brian Gerst
2024-03-23 17:00 ` Uros Bizjak
2024-03-22 16:52 ` [PATCH v4 02/16] x86/stackprotector/64: " Brian Gerst
2024-03-23 17:01 ` Uros Bizjak
2024-03-22 16:52 ` [PATCH v4 03/16] x86/boot: Disable stack protector for early boot code Brian Gerst
2024-03-22 16:52 ` [PATCH v4 04/16] x86/pvh: Use fixed_percpu_data for early boot GSBASE Brian Gerst
2024-03-22 16:52 ` [PATCH v4 05/16] x86/relocs: Handle R_X86_64_REX_GOTPCRELX relocations Brian Gerst
2024-03-22 16:52 ` [PATCH v4 06/16] objtool: Allow adding relocations to an existing section Brian Gerst
2024-03-22 16:52 ` [PATCH v4 07/16] objtool: Convert fixed location stack protector accesses Brian Gerst
2024-03-22 16:52 ` [PATCH v4 08/16] x86/stackprotector/64: Convert to normal percpu variable Brian Gerst
2024-03-23 17:11 ` Uros Bizjak
2024-03-22 16:52 ` [PATCH v4 09/16] x86/percpu/64: Use relative percpu offsets Brian Gerst
2024-03-23 17:14 ` Uros Bizjak
2024-03-22 16:52 ` [PATCH v4 10/16] x86/percpu/64: Remove fixed_percpu_data Brian Gerst
2024-03-23 17:14 ` Uros Bizjak
2024-03-22 16:52 ` [PATCH v4 11/16] x86/boot/64: Remove inverse relocations Brian Gerst
2024-03-22 16:52 ` [PATCH v4 12/16] x86/percpu/64: Remove INIT_PER_CPU macros Brian Gerst
2024-03-23 17:15 ` Uros Bizjak
2024-03-22 16:52 ` [PATCH v4 13/16] percpu: Remove PER_CPU_FIRST_SECTION Brian Gerst
2024-03-23 17:17 ` Uros Bizjak
2024-03-22 16:52 ` [PATCH v4 14/16] percpu: Remove PERCPU_VADDR() Brian Gerst
2024-03-22 16:52 ` Brian Gerst [this message]
2024-03-22 16:52 ` [PATCH v4 16/16] kallsyms: Remove KALLSYMS_ABSOLUTE_PERCPU Brian Gerst
2024-03-23 11:39 ` [PATCH v4 00/16] x86-64: Stack protector and percpu improvements Uros Bizjak
2024-03-23 13:22 ` Brian Gerst
2024-03-23 16:16 ` Linus Torvalds
2024-03-23 17:06 ` Linus Torvalds
2024-03-24 19:09 ` David Laight
2024-03-25 14:51 ` Arnd Bergmann
2024-03-25 15:26 ` Takashi Iwai
2024-03-25 18:08 ` Arnd Bergmann
2024-03-26 7:02 ` Uros Bizjak
2024-03-23 22:55 ` Arnd Bergmann
2024-03-25 15:14 ` Ard Biesheuvel
2024-03-24 2:25 ` Ingo Molnar
2024-03-24 3:51 ` Brian Gerst
2024-03-24 4:05 ` Ingo Molnar
2024-03-24 5:43 ` Brian Gerst
2024-03-24 10:53 ` Ingo Molnar
2024-03-24 12:34 ` Brian Gerst
2024-03-24 18:14 ` Ingo Molnar
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