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x86/asm/boot/64: Use __BOOT_TSS instead of literal $0x20 

__BOOT_TSS = (GDT_ENTRY_BOOT_TSS * 8)
GDT_ENTRY_BOOT_TSS = (GDT_ENTRY_BOOT_CS + 2)
GDT_ENTRY_BOOT_CS = 2

(2 + 2) * 8 = 4 * 8 = 32 = 0x20

No code changes.

Signed-off-by: Denys Vlasenko <dvlasenk@redhat.com>
Reviewed-by: Steven Rostedt <rostedt@goodmis.org>
Acked-by: Borislav Petkov <bp@suse.de>
Cc: Alexei Starovoitov <ast@plumgrid.com>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Kees Cook <keescook@chromium.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: Will Drewry <wad@chromium.org>
Link: http://lkml.kernel.org/r/1427899858-7165-2-git-send-email-dvlasenk@redhat.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
This commit is contained in:
Denys Vlasenko 2015-04-01 16:50:58 +02:00 committed by Ingo Molnar
parent 0784b36448
commit 40e4f2d177
1 changed files with 1 additions and 1 deletions
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2
arch/x86/boot/compressed/head_64.S
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@ -165,7 +165,7 @@ ENTRY(startup_32)
/* After gdt is loaded */ /* After gdt is loaded */
xorl %eax, %eax xorl %eax, %eax
lldt %ax lldt %ax
movl $0x20, %eax movl $__BOOT_TSS, %eax
ltr %ax ltr %ax
/* /*