github-mirror/linux
1
0
Fork 0
mirror of https://github.com/torvalds/linux.git synced 2026-05-23 06:31:58 +02:00
Code Issues Actions Packages Projects Releases Wiki Activity Graph

x86/percpu/64: Remove fixed_percpu_data

Browse Source 
Now that the stack protector canary value is a normal percpu variable,
fixed_percpu_data is unused and can be removed.

Signed-off-by: Brian Gerst <brgerst@gmail.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Reviewed-by: Ard Biesheuvel <ardb@kernel.org>
Reviewed-by: Uros Bizjak <ubizjak@gmail.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Link: https://lore.kernel.org/r/20250123190747.745588-10-brgerst@gmail.com
This commit is contained in:
Brian Gerst 2025-01-23 14:07:41 -05:00 committed by Ingo Molnar
parent 9d7de2aa8b
commit b5c4f95351
4 changed files with 0 additions and 14 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

8
arch/x86/include/asm/processor.h
View File

@ -421,14 +421,6 @@ struct irq_stack {
} __aligned(IRQ_STACK_SIZE);
#ifdef CONFIG_X86_64
struct fixed_percpu_data {
char gs_base[40];
unsigned long reserved;
};
DECLARE_PER_CPU_FIRST(struct fixed_percpu_data, fixed_percpu_data) __visible;
DECLARE_INIT_PER_CPU(fixed_percpu_data);
static inline unsigned long cpu_kernelmode_gs_base(int cpu)
{
#ifdef CONFIG_SMP

4
arch/x86/kernel/cpu/common.c
View File

@ -2023,10 +2023,6 @@ EXPORT_PER_CPU_SYMBOL(pcpu_hot);
EXPORT_PER_CPU_SYMBOL(const_pcpu_hot);
#ifdef CONFIG_X86_64
DEFINE_PER_CPU_FIRST(struct fixed_percpu_data,
fixed_percpu_data) __aligned(PAGE_SIZE) __visible;
EXPORT_PER_CPU_SYMBOL_GPL(fixed_percpu_data);
static void wrmsrl_cstar(unsigned long val)
{
/*

1
arch/x86/kernel/vmlinux.lds.S
View File

@ -477,7 +477,6 @@ PROVIDE(__ref_stack_chk_guard = __stack_chk_guard);
*/
#define INIT_PER_CPU(x) init_per_cpu__##x = ABSOLUTE(x)
INIT_PER_CPU(gdt_page);
INIT_PER_CPU(fixed_percpu_data);
INIT_PER_CPU(irq_stack_backing_store);
#ifdef CONFIG_MITIGATION_UNRET_ENTRY

1
arch/x86/tools/relocs.c
View File

@ -830,7 +830,6 @@ static void percpu_init(void)
* __per_cpu_load
*
* The "gold" linker incorrectly associates:
* init_per_cpu__fixed_percpu_data
* init_per_cpu__gdt_page
*/
static int is_percpu_sym(ElfW(Sym) *sym, const char *symname)