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| author | Denys Vlasenko <dvlasenk@redhat.com> | 2015-04-01 16:50:58 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2015-04-02 12:00:20 +0200 |
| commit | 40e4f2d177f748a83e7639554ea7d11568a9fa1f (patch) | |
| tree | 12800f39f6b0d3f9ce80123061b4458d9077c119 /arch/x86/boot | |
| parent | 0784b36448a2a85b95b6eb21a69b9045c896c065 (diff) | |
| download | lwn-40e4f2d177f748a83e7639554ea7d11568a9fa1f.tar.gz lwn-40e4f2d177f748a83e7639554ea7d11568a9fa1f.zip | |
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>
Diffstat (limited to 'arch/x86/boot')
| -rw-r--r-- | arch/x86/boot/compressed/head_64.S | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/x86/boot/compressed/head_64.S b/arch/x86/boot/compressed/head_64.S index 90c152135e92..b0c0d16ef58d 100644 --- a/arch/x86/boot/compressed/head_64.S +++ b/arch/x86/boot/compressed/head_64.S @@ -165,7 +165,7 @@ ENTRY(startup_32) /* After gdt is loaded */ xorl %eax, %eax lldt %ax - movl $0x20, %eax + movl $__BOOT_TSS, %eax ltr %ax /* |