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| author | Andy Lutomirski <luto@kernel.org> | 2017-03-22 14:32:34 -0700 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2017-03-23 08:25:08 +0100 |
| commit | b23adb7d3f7d1d7cce03db9704de67a99ceeda38 (patch) | |
| tree | 942b72751d6b244a0f5f9a6764261cf2cb26672f /arch/x86/include/asm/desc.h | |
| parent | 59c58ceb29d0f030eddb36a3a9dbadcc499786a6 (diff) | |
| download | blackbird-obmc-linux-b23adb7d3f7d1d7cce03db9704de67a99ceeda38.tar.gz blackbird-obmc-linux-b23adb7d3f7d1d7cce03db9704de67a99ceeda38.zip | |
x86/xen/gdt: Use X86_FEATURE_XENPV instead of globals for the GDT fixup
Xen imposes special requirements on the GDT. Rather than using a
global variable for the pgprot, just use an explicit special case
for Xen -- this makes it clearer what's going on. It also debloats
64-bit kernels very slightly.
Signed-off-by: Andy Lutomirski <luto@kernel.org>
Cc: Boris Ostrovsky <boris.ostrovsky@oracle.com>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Brian Gerst <brgerst@gmail.com>
Cc: Denys Vlasenko <dvlasenk@redhat.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Josh Poimboeuf <jpoimboe@redhat.com>
Cc: Juergen Gross <jgross@suse.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Garnier <thgarnie@google.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/e9ea96abbfd6a8c87753849171bb5987ecfeb523.1490218061.git.luto@kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'arch/x86/include/asm/desc.h')
| -rw-r--r-- | arch/x86/include/asm/desc.h | 1 |
1 files changed, 0 insertions, 1 deletions
diff --git a/arch/x86/include/asm/desc.h b/arch/x86/include/asm/desc.h index 17cb46e8a184..d0a21b12dd58 100644 --- a/arch/x86/include/asm/desc.h +++ b/arch/x86/include/asm/desc.h @@ -39,7 +39,6 @@ extern struct desc_ptr idt_descr; extern gate_desc idt_table[]; extern const struct desc_ptr debug_idt_descr; extern gate_desc debug_idt_table[]; -extern pgprot_t pg_fixmap_gdt_flags; struct gdt_page { struct desc_struct gdt[GDT_ENTRIES]; |
