diff options
| author | Brian Gerst <brgerst@gmail.com> | 2024-02-26 17:05:44 -0500 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2024-02-28 11:02:16 +0100 |
| commit | 11e36b0f7c2150a6453872b79555767b43c846d0 (patch) | |
| tree | 0493b027909783638eef78ed5b28f5fd67b722b5 /arch/x86/include/asm/desc.h | |
| parent | 533568e06b157b175912a960efe5ebce8710b4f9 (diff) | |
x86/boot/64: Load the final kernel GDT during early boot directly, remove startup_gdt[]
Instead of loading a duplicate GDT just for early boot, load the kernel
GDT from its physical address.
Signed-off-by: Brian Gerst <brgerst@gmail.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Acked-by: Ard Biesheuvel <ardb@kernel.org>
Cc: Kees Cook <keescook@chromium.org>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Josh Poimboeuf <jpoimboe@redhat.com>
Link: https://lore.kernel.org/r/20240226220544.70769-1-brgerst@gmail.com
Diffstat (limited to 'arch/x86/include/asm/desc.h')
| -rw-r--r-- | arch/x86/include/asm/desc.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/x86/include/asm/desc.h b/arch/x86/include/asm/desc.h index ab97b22ac04a..52c015017990 100644 --- a/arch/x86/include/asm/desc.h +++ b/arch/x86/include/asm/desc.h @@ -46,6 +46,7 @@ struct gdt_page { } __attribute__((aligned(PAGE_SIZE))); DECLARE_PER_CPU_PAGE_ALIGNED(struct gdt_page, gdt_page); +DECLARE_INIT_PER_CPU(gdt_page); /* Provide the original GDT */ static inline struct desc_struct *get_cpu_gdt_rw(unsigned int cpu) |