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x86/head/64: Move the __head definition to <asm/init.h>

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commit d2a285d65bfde3218fd0c3b88794d0135ced680b upstream.

Move the __head section definition to a header to widen its use.

An upcoming patch will mark the code as __head in mem_encrypt_identity.c too.

Signed-off-by: Hou Wenlong <houwenlong.hwl@antgroup.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Link: https://lore.kernel.org/r/0583f57977be184689c373fe540cbd7d85ca2047.1697525407.git.houwenlong.hwl@antgroup.com
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Hou Wenlong 2023-10-17 15:08:06 +08:00 committed by Greg Kroah-Hartman
parent 876941f533
commit 5447cb97e9
2 changed files with 3 additions and 2 deletions
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2
arch/x86/include/asm/init.h
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@ -2,6 +2,8 @@
#ifndef _ASM_X86_INIT_H
#define _ASM_X86_INIT_H
#define __head __section(".head.text")
struct x86_mapping_info {
void *(*alloc_pgt_page)(void *); /* allocate buf for page table */
void *context; /* context for alloc_pgt_page */

3
arch/x86/kernel/head64.c
View File

@ -41,6 +41,7 @@
#include <asm/trapnr.h>
#include <asm/sev.h>
#include <asm/tdx.h>
#include <asm/init.h>
/*
* Manage page tables very early on.
@ -84,8 +85,6 @@ static struct desc_ptr startup_gdt_descr = {
.address = 0,
};
#define __head __section(".head.text")
static void __head *fixup_pointer(void *ptr, unsigned long physaddr)
{
return ptr - (void *)_text + (void *)physaddr;