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x86/head/64: Mark 'startup_gdt[]' and 'startup_gdt_descr' as __initdata

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As 'startup_gdt[]' and 'startup_gdt_descr' are only used in booting,
mark them as __initdata to allow them to be freed after boot.

Signed-off-by: Hou Wenlong <houwenlong.hwl@antgroup.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Link: https://lore.kernel.org/r/c85903a7cfad37d14a7e5a4df9fc7119a3669fb3.1689130310.git.houwenlong.hwl@antgroup.com
This commit is contained in:
Hou Wenlong 2023-07-12 11:30:05 +08:00 committed by Ingo Molnar
parent 9f76d60626
commit dc62830090
1 changed files with 2 additions and 2 deletions
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4
arch/x86/kernel/head64.c
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@ -69,7 +69,7 @@ EXPORT_SYMBOL(vmemmap_base);
/*
* GDT used on the boot CPU before switching to virtual addresses.
*/
static struct desc_struct startup_gdt[GDT_ENTRIES] = {
static struct desc_struct startup_gdt[GDT_ENTRIES] __initdata = {
[GDT_ENTRY_KERNEL32_CS] = GDT_ENTRY_INIT(0xc09b, 0, 0xfffff),
[GDT_ENTRY_KERNEL_CS] = GDT_ENTRY_INIT(0xa09b, 0, 0xfffff),
[GDT_ENTRY_KERNEL_DS] = GDT_ENTRY_INIT(0xc093, 0, 0xfffff),
@ -79,7 +79,7 @@ static struct desc_struct startup_gdt[GDT_ENTRIES] = {
* Address needs to be set at runtime because it references the startup_gdt
* while the kernel still uses a direct mapping.
*/
static struct desc_ptr startup_gdt_descr = {
static struct desc_ptr startup_gdt_descr __initdata = {
.size = sizeof(startup_gdt)-1,
.address = 0,
};