Commit-ID: 1dd439fe97e1a32cbb980c180f1bcb54bb6a2a55
Gitweb: http://git.kernel.org/tip/1dd439fe97e1a32cbb980c180f1bcb54bb6a2a55
Author: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
AuthorDate: Mon, 28 Aug 2017 08:47:38 +0200
Committer: Ingo Molnar <mingo@xxxxxxxxxx>
CommitDate: Tue, 29 Aug 2017 12:07:24 +0200
x86/percpu: Use static initializer for GDT entry
The IDT cleanup is about to remove pack_descriptor(). The GDT setup for the
per-cpu storage can be achieved with the static initializer as well. Replace
it.
Signed-off-by: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
Cc: Andy Lutomirski <luto@xxxxxxxxxx>
Cc: Borislav Petkov <bp@xxxxxxxxx>
Cc: Brian Gerst <brgerst@xxxxxxxxx>
Cc: Denys Vlasenko <dvlasenk@xxxxxxxxxx>
Cc: H. Peter Anvin <hpa@xxxxxxxxx>
Cc: Josh Poimboeuf <jpoimboe@xxxxxxxxxx>
Cc: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx>
Cc: Peter Zijlstra <peterz@xxxxxxxxxxxxx>
Cc: Steven Rostedt <rostedt@xxxxxxxxxxx>
Link: http://lkml.kernel.org/r/20170828064957.954214927@xxxxxxxxxxxxx
Signed-off-by: Ingo Molnar <mingo@xxxxxxxxxx>
---
arch/x86/kernel/setup_percpu.c | 9 +++------
1 file changed, 3 insertions(+), 6 deletions(-)
diff --git a/arch/x86/kernel/setup_percpu.c b/arch/x86/kernel/setup_percpu.c
index 10edd1e..6e8fcb6f 100644
--- a/arch/x86/kernel/setup_percpu.c
+++ b/arch/x86/kernel/setup_percpu.c
@@ -155,13 +155,10 @@ static void __init pcpup_populate_pte(unsigned long addr)
static inline void setup_percpu_segment(int cpu)
{
#ifdef CONFIG_X86_32
- struct desc_struct gdt;
+ struct desc_struct d = GDT_ENTRY_INIT(0x8092, per_cpu_offset(cpu),
+ 0xFFFFF);
- pack_descriptor(&gdt, per_cpu_offset(cpu), 0xFFFFF,
- 0x2 | DESCTYPE_S, 0x8);
- gdt.s = 1;
- write_gdt_entry(get_cpu_gdt_rw(cpu),
- GDT_ENTRY_PERCPU, &gdt, DESCTYPE_S);
+ write_gdt_entry(get_cpu_gdt_rw(cpu), GDT_ENTRY_PERCPU, &d, DESCTYPE_S);
#endif
}
--
To unsubscribe from this list: send the line "unsubscribe linux-tip-commits" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
|